991 results match your criteria Lateral Compartment Arthritis


Effect of Lower Limb Alignment in Medial Meniscus-Deficient Knees on Tibiofemoral Contact Pressure.

Orthop J Sports Med 2019 Feb 6;7(2):2325967118824611. Epub 2019 Feb 6.

Department of Orthopedics and Sports Orthopedics, Rechts der Isar Hospital, Technical University of Munich, Munich, Germany.

Background: Degenerative medial meniscal tears and subsequent partial meniscal resection compromise meniscal function and lead to an overload of the medial compartment. In addition, lower limb alignment plays a key role in load distribution between the medial and lateral knee compartments, and varus alignment is a potential risk factor for medial osteoarthritis.

Purpose/hypothesis: The purpose of this biomechanical study was to investigate the effect of valgus and varus alignment on peak pressure and contact area in knees with concomitant horizontal medial meniscal tears and subsequent leaflet resection. Read More

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http://dx.doi.org/10.1177/2325967118824611DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6378645PMC
February 2019
4 Reads

Incidence and Predictors of Lateral Hinge Fractures Following Medial Opening-Wedge High Tibial Osteotomy Using Locking Plate System: Better Performance of Computed Tomography Scans.

J Arthroplasty 2019 Jan 17. Epub 2019 Jan 17.

Department of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, South Korea.

Background: This study compared the rates of plain radiographs and computed tomography (CT) for detecting lateral hinge fractures and to evaluate factors affecting lateral hinge fractures in patients following medial opening-wedge high tibial osteotomy (MOWHTO).

Methods: This prospective study included 59 patients (65 knees) undergoing MOWHTO for primary medial compartment osteoarthritis with a 2-year follow-up between 2013 and 2016. Clinical and radiographic evaluations were performed using Knee Society Score and Western Ontario and McMaster Universities Arthritis Index, and we calculated the hip-knee-ankle angle, weight-bearing line ratio, lateral distal femoral angle, medial proximal tibial angle, posterior tibial slope, osteotomy gap height, and osteotomy gap filling rate. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S08835403193005
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http://dx.doi.org/10.1016/j.arth.2019.01.026DOI Listing
January 2019
13 Reads

Lateral Unicompartmental Knee Arthroplasty Utilizing a Modified Surgical Technique and Specifically Adapted Fixed-Bearing Implant.

Surg Technol Int 2018 Dec 20;34. Epub 2018 Dec 20.

Joint Implant Surgeons, Inc., New Albany, Ohio, White Fence Surgical Suites, LLC New Albany, Ohio, Mount Carmel Health System, Columbus, Ohio.

Background: Treatment of isolated lateral compartment arthritic disease with partial knee arthroplasty remains underutilized in comparison to medial unicompartmental arthroplasty. This study examines the survival and outcome of lateral unicompartmental arthroplasty utilizing the first implant specifically developed for the lateral compartment.

Materials And Methods: A retrospective review was performed to detect lateral unicompartmental arthroplasty procedures performed in our practice between January 2013 and May 2016. Read More

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December 2018
11 Reads

Quadriceps weakness associates with greater T1ρ relaxation time in the medial femoral articular cartilage 6 months following anterior cruciate ligament reconstruction.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 17. Epub 2018 Dec 17.

Department of Orthopaedics, University of North Carolina at Chapel Hill, 102 Mason Farm Rd # 2, Chapel Hill, NC, 27599, USA.

Purpose: Quadriceps weakness following anterior cruciate ligament reconstruction (ACLR) is linked to decreased patient-reported function, altered lower extremity biomechanics and tibiofemoral joint space narrowing. It remains unknown if quadriceps weakness is associated with early deleterious changes to femoral cartilage composition that are suggestive of posttraumatic osteoarthritis development. The purpose of the cross-sectional study was to determine if quadriceps strength was associated with T1ρ relaxation times, a marker of proteoglycan density, of the articular cartilage in the medial and lateral femoral condyles 6 months following ACLR. Read More

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http://dx.doi.org/10.1007/s00167-018-5290-yDOI Listing
December 2018
4 Reads

Cartilage repair surgery prevents progression of knee degeneration.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 12. Epub 2018 Dec 12.

Musculoskeletal and Quantitative Imaging Research, Department of Radiology and Biomedical Imaging, University of California, San Francisco, 185 Berry Street, Suite 350, San Francisco, CA, 94107, USA.

Purpose: To investigate, whether cartilage repair surgery for focal osteochondral defects at the knee results in less degenerative changes over 6 years in a MR imaging follow-up than morphologically initially identical defects in non-operated control subjects from the osteoarthritis initiative (OAI).

Methods: A total of 32 individuals received baseline and follow-up MRI. In n = 16 patients with cartilage repair [osteochondral autograft transfer system (OATS), n = 12; spongiosa-augmented matrix-associated autologous chondrocyte implantation (MACI), n = 4] MRI was performed preoperatively and after 5. Read More

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http://dx.doi.org/10.1007/s00167-018-5321-8DOI Listing
December 2018
1 Read

Lateral cartilage defects and medial subchondral surface ratio are associated with knee-related disability.

J Orthop Res 2019 Feb 3;37(2):378-385. Epub 2019 Jan 3.

Department of Orthopaedics, The Ohio State University Wexner Medical Center, 2835 Fred Taylor Dr, Columbus, Ohio, 43202.

We sought to determine the relationship between (i) full-thickness cartilage defects and tibiofemoral subchondral surface ratio (SSR) and (ii) disability and quality of life in patients with mild radiographic osteoarthritis (OA) (Kellgren-Lawrence grade 2) or without radiographic OA (Kellgren-Lawrence grades 0 or 1)? A total of 642 participants from the Osteoarthritis Initiative (OAI) with baseline knee MRIs and a Kellgren-Lawrence grade 2 or less on both bilateral screening radiographs were included. The independent relationship was assessed between (i) full-thickness cartilage defect presence and tibiofemoral SSR and (ii) Knee Injury and Osteoarthritis Outcome Score (KOOS) quality of life (QOL), KOOS function in sports and recreation (KOOS-sport/rec), and Western Ontario and McMaster Universities Arthritis Index (WOMAC) disability score after adjustment for relevant confounders with multivariate regression modeling. The prevalence of medial full-thickness defects was 10. Read More

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http://doi.wiley.com/10.1002/jor.24187
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http://dx.doi.org/10.1002/jor.24187DOI Listing
February 2019
11 Reads

[Anterolateral stabilization using the modified Lemaire technique for ACL deficiency].

Oper Orthop Traumatol 2019 Feb 26;31(1):36-44. Epub 2018 Nov 26.

Klinik für Unfall‑, Hand und Wiederherstellungschirurgie, Universitätsklinikum Münster, Münster, Deutschland.

Objective: Treatment of persistent anterolateral knee instability.

Indications: Subjective/objective (rotational) instability of the knee after anatomic anterior cruciate ligament (ACL) reconstruction. ACL re-rupture including special demands (e. Read More

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http://link.springer.com/10.1007/s00064-018-0579-z
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http://dx.doi.org/10.1007/s00064-018-0579-zDOI Listing
February 2019
14 Reads

Comparison between kinetic and kinetic-kinematic driven knee joint finite element models.

Sci Rep 2018 Nov 26;8(1):17351. Epub 2018 Nov 26.

Department of Applied Physics, University of Eastern Finland, POB 1627, FI-70211, Kuopio, Finland.

Use of knee joint finite element models for diagnostic purposes is challenging due to their complexity. Therefore, simpler models are needed for studies where a high number of patients need to be analyzed, without compromising the results of the model. In this study, more complex, kinetic (forces and moments) and simpler, kinetic-kinematic (forces and angles) driven finite element models were compared during the stance phase of gait. Read More

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http://dx.doi.org/10.1038/s41598-018-35628-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6255758PMC
November 2018
2 Reads

Minimally invasive Oxford unicompartmental knee arthroplasty ensures excellent functional outcome and high survivorship in the long term.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 21. Epub 2018 Nov 21.

Center for Orthopaedics and Trauma Surgery, University of Heidelberg, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany.

Purpose: Whether unicompartimental or total knee arthroplasty is superior for treatment of anteromedial knee osteoarthritis, is still uncertain. Therefore, the purpose of this study was to evaluate clinical and radiological outcome as well as long-term survivorship of medial Oxford unicompartmental knee arthroplasty (OUKA) at an independent center with a minimum follow-up of 10 years.

Methods: This single-center retrospective cohort study reports the 10-15 years follow-up results of 113 consecutive patients (126 knees) after medial OUKA. Read More

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http://dx.doi.org/10.1007/s00167-018-5299-2DOI Listing
November 2018
11 Reads

The relationship between anteroposterior stability and medial-lateral stability of the bi-cruciate stabilized total knee arthroplasty.

Knee 2018 Dec 7;25(6):1247-1253. Epub 2018 Nov 7.

Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.

Background: Acquisition of appropriate anteroposterior (AP) stability depends on the prosthetic design and intraoperative soft tissue handling. A bi-cruciate stabilized (BCS) total knee arthroplasty (TKA) has a two cam-post mechanism, which substitutes for the anterior cruciate ligament and posterior cruciate ligament (PCL). Therefore, appropriate AP stability is expected. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09680160183064
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http://dx.doi.org/10.1016/j.knee.2018.08.002DOI Listing
December 2018
11 Reads

Superolateral Hoffa's Fat Pad Edema and Trochlear Sulcal Angle Are Associated With Isolated Medial Patellofemoral Compartment Osteoarthritis.

Can Assoc Radiol J 2018 Nov;69(4):450-457

Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Orthopedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Genetics, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Department of Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, Pennsylvania, USA. Electronic address:

Purpose: To evaluate whether mediopatellar plica and knee morphometric measurements obtained from magnetic resonance imaging (MRI) studies are associated with isolated medial patellofemoral osteoarthritis in young adults.

Methods: MRI studies from 60 patients with isolated medial patellofemoral osteoarthritis and 90 control patients with normal knee MRI studies were reviewed. The presence of mediopatellar plica, the presence of edema in the superolateral aspect of Hoffa's fat pad and suprapatellar fat pad, quadriceps and patellar tendinosis, and axial and sagittal alignment of the patellar and trochlear morphology were assessed using MRI. Read More

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http://dx.doi.org/10.1016/j.carj.2018.07.010DOI Listing
November 2018
3 Reads

Diabetics show accelerated progression of knee cartilage and meniscal lesions: data from the osteoarthritis initiative.

Skeletal Radiol 2018 Oct 24. Epub 2018 Oct 24.

Musculoskeletal Quantitative Imaging Research Group, Department of Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.

Objective: To investigate whether subjects with diabetes show accelerated knee joint structural degeneration over 4 years compared to diabetes-free controls.

Materials And Methods: Two hundred forty-four participants with diabetes were selected from the Osteoarthritis Initiative cohort and matched with 244 diabetes-free controls. 3. Read More

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http://link.springer.com/10.1007/s00256-018-3088-0
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http://dx.doi.org/10.1007/s00256-018-3088-0DOI Listing
October 2018
14 Reads

MRI-detected osteophytes of the knee: natural history and structural correlates of change.

Arthritis Res Ther 2018 Oct 23;20(1):237. Epub 2018 Oct 23.

Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia.

Backgroud: The natural history of semi-quantitative magnetic resonance imaging (MRI)-detected osteophytes (MRI-detected OPs) has not been described and it is unknown whether knee structural abnormalities can predict MRI-detected OP change over time. Thus, the aim of current study is to describe the natural history of knee MRI-detected OP, and to determine if knee structural abnormalities are associated with change of MRI-detected OP in a longitudinal study of older adults.

Methods: Randomly selected older adults (n = 837, mean age 63 years) had MRI at baseline and 413 of them had MRI 2. Read More

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http://dx.doi.org/10.1186/s13075-018-1734-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6235223PMC
October 2018
3 Reads

The sex-specific influence of quadriceps weakness on worsening patellofemoral and tibiofemoral cartilage damage: the MOST Study.

Arthritis Care Res (Hoboken) 2018 Oct 8. Epub 2018 Oct 8.

Clinical Epidemiology Research & Training Unit, Boston University School of Medicine, Boston, MA, USA.

Objective: Reports on quadriceps weakness as a risk factor for incident and progressive knee osteoarthritis are conflicting, potentially due to differing effects of muscle strength on patellofemoral and tibiofemoral compartments. This study aimed to examine the sex-specific relation of quadriceps strength to worsening patellofemoral and tibiofemoral cartilage damage over 84-months.

Methods: The Multicenter Osteoarthritis Study (MOST) is a cohort study of individuals with or at risk for knee osteoarthritis. Read More

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http://doi.wiley.com/10.1002/acr.23773
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http://dx.doi.org/10.1002/acr.23773DOI Listing
October 2018
9 Reads

Predictive Factors for and Detection of Lateral Hinge Fractures Following Open Wedge High Tibial Osteotomy: Plain Radiography Versus Computed Tomography.

Arthroscopy 2018 Nov 3;34(11):3073-3079. Epub 2018 Oct 3.

Department of Orthopaedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. Electronic address:

Purpose: To compare the accuracy of plain radiography and computed tomography (CT) in detecting lateral hinge fractures and to identify predictive factors of the lateral hinge fractures after open wedge high tibial osteotomy (HTO).

Methods: This study included patients who underwent isolated primary open wedge HTO for medial compartment degenerative arthritis from 2015 to 2016 and were evaluated by postoperative CT scans and followed for a minimum of 1 year. This study involved 48 patients (48 knees) undergoing open wedge HTO for primary medial osteoarthritis. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S07498063183052
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http://dx.doi.org/10.1016/j.arthro.2018.06.041DOI Listing
November 2018
3 Reads

Quadriceps Weakness and Risk of Knee Cartilage Loss Seen on Magnetic Resonance Imaging in a Population-based Cohort with Knee Pain.

J Rheumatol 2019 Feb 1;46(2):198-203. Epub 2018 Oct 1.

From the Department of Medicine, the Division of Rheumatology, the Department of Radiology and the School of Population and Public Health, University of British Columbia, Vancouver; Arthritis Research Canada, Vancouver; Canadian Institutes of Health Research HIV Trials Network, Vancouver; Centre for Health Evaluation and Outcomes Sciences, Vancouver, British Columbia, Canada; Department of Radiology, Boston University Medical Center, Boston, Massachusetts, USA.

Objective: To determine whether baseline quadriceps weakness predicts cartilage loss assessed on magnetic resonance imaging (MRI).

Methods: Subjects aged 40-79 with knee pain (n = 163) were recruited from a random population sample and examined for quadriceps weakness with manual isometric strength testing, using a 3-point scoring system (0 = poor resistance, 1 = moderate resistance, 2 = full resistance), which was dichotomized as normal (grade 2) versus weak (grade 0/1). MRI of the more symptomatic knee was obtained at baseline and at mean of 3. Read More

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http://dx.doi.org/10.3899/jrheum.170875DOI Listing
February 2019
9 Reads

The Effect of Lateral Opening Wedge Distal Femoral Varus Osteotomy on Tibiofemoral Contact Mechanics Through Knee Flexion.

Am J Sports Med 2018 Nov 28;46(13):3237-3244. Epub 2018 Sep 28.

Department of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, USA.

Background:: Lateral opening wedge distal femoral osteotomy (DFO) unloads a diseased lateral compartment of the knee in patients with genu valgum. To the best of our knowledge, there are no biomechanical studies investigating the effect of knee flexion on contact pressure and area after DFO.

Hypothesis:: As knee flexion angles increase, DFO will be less effective at unloading the lateral compartment of the knee. Read More

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http://journals.sagepub.com/doi/10.1177/0363546518799353
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http://dx.doi.org/10.1177/0363546518799353DOI Listing
November 2018
11 Reads

The role of orthoses in knee osteoarthritis.

Hosp Pract (1995) 2019 Feb 29;47(1):1-5. Epub 2018 Sep 29.

b Department of Physical Medicine and Rehabilitation , La Paz University Hospital-IdiPaz , Madrid , Spain.

Objectives: Taking into account that the role of orthoses in patients with knee osteoarthritis (OA) is unclear and controversial, the purpose of this article is to review recent literature with the aim of answering the following question: What is the current role of orthoses in the treatment of knee OA?

Methods: A Cochrane Library and PubMed (MEDLINE) search related to the role of orthoses in knee OA was performed.

Results: Unloader braces decrease the adduction moment of the knee. In patients with varus medial compartment knee OA bracing is beneficial for pain, stiffness, function and quality of life (low grade of evidence). Read More

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http://dx.doi.org/10.1080/21548331.2018.1527168DOI Listing
February 2019
2 Reads

Articular cartilage lesions associated with complete lateral meniscal tears in the dog.

Vet Surg 2018 Oct 21;47(7):958-962. Epub 2018 Sep 21.

Austin Veterinary Emergency and Specialty Center, Austin, Texas.

Objective: To describe articular cartilage (AC) lesions associated with complete lateral meniscal tears in dogs.

Study Design: Observational series.

Animals: Seventeen dogs with arthroscopic evidence of a complete lateral meniscal tear and associated AC lesions. Read More

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http://dx.doi.org/10.1111/vsu.12961DOI Listing
October 2018
6 Reads

High muscle co-contraction does not result in high joint forces during gait in anterior cruciate ligament deficient knees.

J Orthop Res 2019 Jan 9;37(1):104-112. Epub 2018 Oct 9.

Biomechanics and Movement Science, University of Delaware, 540 South College Avenue, Newark 19713, Delaware.

The mechanism of knee osteoarthritis development after anterior cruciate ligament injuries is poorly understood. The objective of this study was to evaluate knee gait variables, muscle co-contraction indices and knee joint loading in young subjects with anterior cruciate ligament deficiency (ACLD, n = 36), versus control subjects (n = 12). A validated, electromyography-informed model was used to estimate joint loading. Read More

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http://dx.doi.org/10.1002/jor.24141DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6393175PMC
January 2019
3 Reads

Clinical interest of quantitative bone SPECT-CT in the preoperative assessment of knee osteoarthritis.

Medicine (Baltimore) 2018 Aug;97(35):e11943

Nuclear Medicine Department, University Hospital Morvan, Brest Cedex.

The aim of the study was to evaluate the interest of quantitative bone SPECT-CT in the preoperative assessment of knee osteoarthritis (OA) before unicompartmental knee arthroplasty (UKA).Patients eligible for UKA were prospectively included in 2 centers and underwent a preoperative SPECT-CT. Images were reconstructed with an OSEM, an OSCGM (allowing SUV quantification) and an enhanced OSCGM (containing uptakes to bones) algorithms. Read More

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http://dx.doi.org/10.1097/MD.0000000000011943DOI Listing
August 2018
10 Reads

Patterns of Compartment Involvement in End-stage Knee Osteoarthritis in a Chinese Orthopedic Center: Implications for Implant Choice.

Orthop Surg 2018 Aug;10(3):227-234

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK.

Objectives: Knee osteoarthritis (OA) is a prevalent disease in the elderly, causing pain and contributing to poor quality of life. Surgical intervention, such as knee arthroplasty, can be used in those with end-stage knee OA. Total knee arthroplasty (TKA) is one of the most common surgical procedures for end-stage knee OA, with promising clinical outcomes. Read More

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http://dx.doi.org/10.1111/os.12395DOI Listing
August 2018
7 Reads

Additional distal femoral osteotomy for insufficient correction after high tibial osteotomy.

BMJ Case Rep 2018 Aug 27;2018. Epub 2018 Aug 27.

Department of Orthopaedic Surgery, Yawata Medical Center, Komatsu, Ishikawa, Japan.

A 70-year-old man who was treated with a closed-wedge high tibial osteotomy (HTO) had recurrent right medial knee pain 12 years after the initial osteotomy. We planned a recorrection osteotomy because the patient led an active lifestyle, had well-preserved range of motion and the lateral compartment was still intact. According to preoperative deformity analysis, which indicated a tibia in slight valgus and a femur in moderate varus, recorrection of the distal femur was chosen. Read More

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http://dx.doi.org/10.1136/bcr-2018-224514DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119394PMC
August 2018
3 Reads

Disease Progression After Lateral and Medial Unicondylar Knee Arthroplasty.

J Arthroplasty 2018 11 29;33(11):3441-3447. Epub 2018 Jul 29.

Athens Orthopedic Clinic, Athens, GA; Department of Kinesiology, University of Georgia, Athens, GA.

Background: Medial unicompartmental knee arthroplasty (UKA) has been a successful option for treatment of arthritis in patients with a healthy lateral compartment. However, lateral UKA is less common and results are less consistent. The purpose of this study is to compare progression of radiographically evident osteoarthritis in unoperated compartments during 5 years after lateral and medial UKA. Read More

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http://dx.doi.org/10.1016/j.arth.2018.07.019DOI Listing
November 2018
5 Reads

A study of the relationship between meniscal injury and bone microarchitecture in ACL reconstructed knees.

Knee 2018 Oct 13;25(5):746-756. Epub 2018 Aug 13.

Department of Radiology, Cumming School of Medicine, University of Calgary, Canada; McCaig Institute for Bone and Joint Health, University of Calgary, Canada. Electronic address:

Background: Anterior cruciate ligament (ACL) tears increase the risk of developing knee osteoarthritis. This risk increases further with concurrent meniscus injury. The role of bone changes during knee osteoarthritis development are not well-understood, but may be important to its etiology. Read More

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http://dx.doi.org/10.1016/j.knee.2018.07.004DOI Listing
October 2018
23 Reads

Clinical Outcomes of Closing- and Opening-Wedge High Tibial Osteotomy for Treatment of Anteromedial Unicompartmental Knee Osteoarthritis.

J Knee Surg 2018 Aug 13. Epub 2018 Aug 13.

Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.

This article compares the long-term outcomes of closing-wedge osteotomy (CWO) and opening-wedge osteotomy (OWO) in the treatment of unicompartmental medial osteoarthritis with varus deformity. This study included 79 patients who underwent high tibial osteotomy (HTO) between 2002 and 2008. Pre- and postoperative radiography and computed tomography were used to evaluate the posterior tibial slope, the patellar height, the tibiofemoral angle, and the lateral and medial tibiofemoral joint space. Read More

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http://dx.doi.org/10.1055/s-0038-1668124DOI Listing
August 2018
4 Reads

Objective quantification of ligament balancing using VERASENSE in measured resection and modified gap balance total knee arthroplasty.

BMC Musculoskelet Disord 2018 Jul 27;19(1):266. Epub 2018 Jul 27.

Center for Joint Disease, Chonnam National University Hwasun Hospital, 160, Ilsim-Ri, Hwasun-Eup, Hwasun-Gun, Jeonnam, 519-809, South Korea.

Background: Soft tissue balancing which is above all most important factor of total knee arthroplasty, has been performed by subjective methods. Recently objective orthosensor has been developed for compartment pressure measurement. The purpose of this study was: (1) to quantify the compartment pressure of the joint throughout the range of motion during TKA using orthosensor, (2) to determine the usefulness of orthosensor by analyzing correlation between the pressure in both compartment with initial trial and after final implantation, and (3) to evaluate the types and effectiveness of additional ligament balancing procedures to compartment pressure. Read More

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http://dx.doi.org/10.1186/s12891-018-2190-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6064102PMC
July 2018
2 Reads

High in vivo levels of adipsin lead to increased knee tissue degradation in osteoarthritis: data from humans and animal models.

Rheumatology (Oxford) 2018 10;57(10):1851-1860

Osteoarthritis Research Unit, University of Montreal Hospital Research Centre (CRCHUM), Montreal, Canada.

Objective: This study explored the role of the adipokine adipsin in OA.

Methods: Control and OA articular tissues, cells and serum were obtained from human individuals. Serum adipsin levels of human OA individuals were compared with cartilage volume loss as assessed by MRI at 48 months. Read More

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http://dx.doi.org/10.1093/rheumatology/key181DOI Listing
October 2018
3 Reads

Effect of tibial component position on short-term clinical outcome in Oxford mobile bearing unicompartmental knee arthroplasty.

J Orthop Sci 2018 Sep 19;23(5):807-810. Epub 2018 Jun 19.

Department of Orthopedic Surgery and Joint Surgery Center, Takatsuki General Hospital, 1-3-13, Kosobe-Chou, Takatsuki-City, Osaka, 569-1192, Japan.

Background: Malposition of the tibial components is a well-known complication of unicompartmental knee arthroplasty. In this study, we aimed to ascertain the relationship between the tibial component position and clinical outcomes of unicompartmental knee arthroplasty. We focused on the tibial component height and obliquity in the coronal plane. Read More

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http://dx.doi.org/10.1016/j.jos.2018.04.012DOI Listing
September 2018
5 Reads

A Hydrogel Meniscal Replacement: Knee Joint Pressure and Distribution in an Ovine Model Compared to Native Tissue.

Ann Biomed Eng 2018 Nov 19;46(11):1785-1796. Epub 2018 Jun 19.

School of Biomedical Engineering, Colorado State University, Fort Collins, CO, 80523, USA.

Pressure distribution of the native ovine knee meniscus was compared to a medial meniscectomy and three treatment conditions including a suture reattachment of the native tissue, an allograft, and a novel thermoplastic elastomer hydrogel (TPE) construct. The objective of this study was to assess the efficacy of a novel TPE hydrogel construct at restoring joint pressure and distribution. Limbs were loaded in uniaxial compression at 45°, 60°, and 75° flexion and from 0 to 181 kg. Read More

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http://dx.doi.org/10.1007/s10439-018-2069-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6279475PMC
November 2018
4 Reads

Posterior Reference Position Affects Intraoperative Kinematic and Soft Tissue Balance in Navigated Posterior-Stabilized Total Knee Arthroplasty.

J Arthroplasty 2018 09 4;33(9):2851-2857. Epub 2018 May 4.

Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

Background: The importance of medial compartment stability is recognized in total knee arthroplasty (TKA). To manage the medial extension-flexion gap, the posterior reference position can be changed from conventional posterior center to posterior medial in measured resection techniques. This study aimed to compare the intraoperative soft tissue balance and rotational kinematics between the posterior medial and posterior center reference groups. Read More

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http://dx.doi.org/10.1016/j.arth.2018.04.038DOI Listing
September 2018
1 Read

Meniscal pathologies on MRI correlate with increased bone tracer uptake in SPECT/CT.

Eur Radiol 2018 Nov 22;28(11):4696-4704. Epub 2018 May 22.

Department of Radiology and Nuclear Medicine, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland.

Objectives: To assess the relationship of subchondral bone tracer uptake (BTU) on SPECT/CT and meniscal pathologies on MRI in patients with painful knees.

Methods: Twenty-five patients who had MRI and SPECT/CT within 3 months without knee surgery or grade ≥3 cartilage lesions were prospectively included. Maximum values of each subchondral femorotibial area were quantified and a ratio was calculated in relation to a femoral shaft reference region, which represented the BTU background activity. Read More

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http://dx.doi.org/10.1007/s00330-018-5466-3DOI Listing
November 2018
5 Reads
4.014 Impact Factor

Outcomes of a Fixed-Bearing, Medial, Cemented Unicondylar Knee Arthroplasty Design: Survival Analysis and Functional Score of 460 Cases.

J Arthroplasty 2018 09 24;33(9):2792-2799. Epub 2018 Apr 24.

Department of Orthopedic Surgery, AZ Delta Hospital, Roeselare, Belgium.

Background: Unicompartmental knee arthroplasty (UKA) is an alternative to total knee arthroplasty in isolated medial osteoarthritis (OA). However, despite satisfactory reports on the clinical performance, UKA revision rates are still concerning. This retrospective study reports on the long-term survivorship, functional outcomes, and reasons for revision in fixed-bearing UKA implant. Read More

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http://dx.doi.org/10.1016/j.arth.2018.04.031DOI Listing
September 2018
4 Reads

Factors affecting femoral rotational angle based on the posterior condylar axis in gap-based navigation-assisted total knee arthroplasty for valgus knee.

PLoS One 2018 15;13(5):e0197335. Epub 2018 May 15.

Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.

Background: Achieving proper rotational alignment of the femoral component in total knee arthroplasty (TKA) for valgus knee is challenging because of lateral condylar hypoplasia and lateral cartilage erosion. Gap-based navigation-assisted TKA enables surgeons to determine the angle of femoral component rotation (FCR) based on the posterior condylar axis. This study evaluated the possible factors that affect the rotational alignment of the femoral component based on the posterior condylar axis. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0197335PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5953479PMC
November 2018
3 Reads

Inverted Rearfoot posture in subjects with coexisting patellofemoral osteoarthritis in medial knee osteoarthritis: an exploratory study.

J Foot Ankle Res 2018 8;11:17. Epub 2018 May 8.

7Department of Orthopedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

Background: While abnormal rearfoot posture and its relationship to patellofemoral (PF) pain has been thoroughly discussed in the literature, its relationship to patellofemoral osteoarthritis (PFOA) has not been determined. This study aimed to examine whether rearfoot posture is associated with a higher prevalence of radiographic PFOA in a compartment-specific manner in patients with medial tibiofemoral osteoarthritis (TFOA).

Methods: Participants from orthopedic clinics ( = 68, age 56-90 years, 75. Read More

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http://dx.doi.org/10.1186/s13047-018-0261-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5941454PMC
October 2018
3 Reads

Coronal tibiofemoral subluxation is correlated to correction angle in medial opening wedge high tibial osteotomy.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 7;26(11):3482-3490. Epub 2018 May 7.

Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Yanagido 1-1, Gifu, Gifu, 501-1194, Japan.

Purpose: This study aimed to analyse the change in coronal tibiofemoral (CTF) subluxation after high tibial osteotomy and to determine demographic variables associated with CTF subluxation. The change in CTF subluxation was hypothesised to be associated with the magnitude of correction of lower limb alignment and medial proximal tibial angle (MPTA).

Methods: A total of 103 consecutive knees in 86 patients who underwent medial opening wedge high tibial osteotomy for symptomatic medial compartment knee osteoarthritis were retrospectively analysed. Read More

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http://dx.doi.org/10.1007/s00167-018-4948-9DOI Listing
November 2018
5 Reads

Medial Compartment Decompression by Proximal Fibular Osteotomy: A Biomechanical Cadaver Study.

Orthopedics 2018 Jul 30;41(4):e496-e501. Epub 2018 Apr 30.

Medial compartment knee osteoarthritis is a painful and debilitating disease. A proximal fibular osteotomy is a novel, simple surgical technique that may reduce pain and improve function for patients with osteoarthritis. The purpose of this biomechanical cadaver study was to determine what effect proximal fibular osteotomy had on knee joint and ankle pressures and tibia strain. Read More

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http://dx.doi.org/10.3928/01477447-20180424-05DOI Listing
July 2018
3 Reads

Local associations between knee cartilage T and T relaxation times and patellofemoral joint stress during walking: A voxel-based relaxometry analysis.

Knee 2018 Jun 19;25(3):406-416. Epub 2018 Apr 19.

Musculoskeletal Quantitative Imaging Research Laboratory, Department of Radiology and Biomedical Imaging, University of California, San Francisco, 185 Berry Street, San Francisco, CA, USA; Department of Physical Therapy and Rehabilitation Science, University of California, San Francisco, 1500 Owens Street, San Francisco, CA, USA.

Background: This study aimed to utilize voxel-based relaxometry (VBR) to examine local correlations between patellofemoral joint (PFJ) stress during gait and PFJ cartilage relaxation times.

Methods: Eighty-three subjects with and without PFJ osteoarthritis (OA) underwent knee magnetic resonance (MR) images using fast spin-echo, T1ρ and T2 relaxation time sequences. Patellar and trochlear cartilage relaxation times were computed for each voxel. Read More

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http://dx.doi.org/10.1016/j.knee.2018.02.016DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6049815PMC
June 2018
7 Reads

Intraoperative soft tissue balance using novel medial preserving gap technique in posterior-stabilized total knee arthroplasty: comparison to measured resection technique.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 21;26(11):3474-3481. Epub 2018 Apr 21.

Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.

Purpose: To investigate intraoperative soft tissue balance with femoral component trial in place using a novel medial preserving gap technique, focusing on medial compartment stability and allowing lateral physiological laxity, with compared with using a measured resection technique in posterior-stabilized (PS) total knee arthroplasty (TKA).

Methods: Primary PS TKA, using either medial preserving gap technique (n = 127) or measured resection technique (n = 148), was performed in 275 subjects with varus knee osteoarthritis. Intraoperative soft tissue balance with femoral component in place was assessed using Offset Repo-Tensor with 40 lbs. Read More

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http://dx.doi.org/10.1007/s00167-018-4945-zDOI Listing
November 2018
5 Reads

The Role of the Tourniquet and Patella Position on the Compartmental Loads During Sensor-Assisted Total Knee Arthroplasty.

J Arthroplasty 2018 07 12;33(7S):S121-S125. Epub 2018 Mar 12.

Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.

Background: An inflated tourniquet may diminish the natural excursion of the extensor mechanism and alter compartmental loads, affecting the surgeon's ability to accurately assess ligament balance during total knee arthroplasty (TKA). In addition, patella position (reduced, lateralized, or everted) has also been known to affect compartmental loads. This study used intraoperative sensing to assess how a combination of tourniquet inflation and patella position may affect medial and lateral compartmental loads during sensor-assisted TKA. Read More

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http://dx.doi.org/10.1016/j.arth.2018.03.002DOI Listing
July 2018
6 Reads

Distal Femoral Varus Osteotomy for the Management of Valgus Deformity of the Knee.

J Am Acad Orthop Surg 2018 May;26(9):313-324

From the Department of Orthopaedic Surgery, University of Missouri, Columbia, MO (Dr. Sherman), the Department of Orthopedic Surgery and Rehabilitation, University of Oklahoma, Oklahoma City, OK (Dr. Thompson), and the Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO (Dr. Clohisy).

Distal femoral varus osteotomy is a well-described treatment option for patients with valgus malalignment associated with a variety of underlying conditions. This procedure may be the definitive treatment option in active patients with isolated lateral compartment osteoarthritis or posttraumatic arthritis. It may be a useful concomitant procedure in young patients with lateral meniscus deficiency, focal chondral defects, chronic medial collateral ligament insufficiency, and/or patellofemoral instability. Read More

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http://dx.doi.org/10.5435/JAAOS-D-16-00179DOI Listing
May 2018
11 Reads

The Oxford Medial Unicompartmental Knee Arthroplasty: The South African Experience.

J Arthroplasty 2018 06 2;33(6):1727-1731. Epub 2018 Feb 2.

University of the Witwatersrand (WITS), Division of Orthopaedic Surgery, Johannesburg, South Africa.

Background: The Oxford unicompartmental knee arthroplasty (OUKA) is a successful treatment for endstage, symptomatic anteromedial osteoarthritis. This study reports the results of a cohort of consecutive cemented and cementless medial OUKAs from an independent center and aims to answer the following questions: what is the survival of OUKA in the hands of a nondesigner surgeon? Are there any differences in the survival of cementless and cemented OUKA? Are the failure modes any different with the cementless and cemented OUKA?

Methods: One thousand one hundred twenty consecutive OUKAs were implanted in a single center for the recommended indications. Patients were prospectively identified and followed up. Read More

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http://dx.doi.org/10.1016/j.arth.2018.01.035DOI Listing
June 2018
2 Reads

Risk factors for progression of articular cartilage damage after anatomical anterior cruciate ligament reconstruction: a second-look arthroscopic evaluation.

Bone Joint J 2018 03;100-B(3):285-293

Hiroshima University, 1-3-2 Kagamiyama Higashi-Hiroshima 739-8511, Japan.

Aims: To investigate the risk factors for progression of articular cartilage damage after anatomical anterior cruciate ligament (ACL) reconstruction.

Patients And Methods: A total of 174 patients who underwent second-look arthroscopic evaluation after anatomical ACL reconstruction were enrolled in this study. The graded condition of the articular cartilage at the time of ACL reconstruction was compared with that at second-look arthroscopy. Read More

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http://dx.doi.org/10.1302/0301-620X.100B3.BJJ-2017-0837.R1DOI Listing
March 2018
6 Reads

Contralateral limb foot rotation during unilateral toe-in or toe-out walking in people with knee osteoarthritis.

Gait Posture 2018 05 6;62:132-134. Epub 2018 Mar 6.

Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada; Motion Analysis and Biofeedback Laboratory, University of British Columbia, Vancouver, BC, Canada. Electronic address:

Background: Gait modification is a treatment approach often used for a variety of neuromuscular and musculoskeletal pathologies. Gait modification is commonly applied to a single limb, as is done with foot rotation (FR) in people with knee osteoarthritis (KOA). However, the extent to which gait changes observed in the trained limb are also exhibited in the untrained, contralateral limb during a training session is unknown. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2018.03.013DOI Listing
May 2018
3 Reads

Role of an anatomically contoured plate and metal block for balanced stability between the implant and lateral hinge in open-wedge high-tibial osteotomy.

Arch Orthop Trauma Surg 2018 Jul 15;138(7):911-920. Epub 2018 Mar 15.

Department of Orthopaedic Surgery, Seoul National University College of Medicine, Bundang Hospital, 166 Gumi-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, South Korea.

Introduction: Open-wedge high tibial osteotomy (OWHTO) is a well-established surgical option for medial compartment osteoarthritis of the varus knee. The initial strength of the fixation plate is critical for successful correction maintenance and healing of the osteotomy site. This study was conducted to verify if a newly designed anatomical plate (LCfit) improves the stability of both the medial implant and lateral hinge area, as well as to evaluate how the metal block contributes to both medial and lateral stability. Read More

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http://dx.doi.org/10.1007/s00402-018-2918-9DOI Listing
July 2018
12 Reads

Knee joint synovitis: study of correlations and diagnostic performances of ultrasonography compared with histopathology.

RMD Open 2018 8;4(1):e000616. Epub 2018 Feb 8.

The Centre for Arthritis and Rheumatic Diseases, Saint Vincent's University Hospital and Dublin Academic Medical Centre, University College Dublin, Dublin, Ireland.

Objectives: Ultrasonography (US) is a fast, available and low-cost imaging tool used for detecting knee synovitis. Our aims were to assess the relationship between US and histology findings in appraising levels of inflammation and vascularity in the knee joint in subjects with inflammatory arthropathies; to determine whether differences exist in the appraisal between varying knee compartments and to compare US performances compared with gold standard histology for knee synovitis detection.

Methods: Subjects with actively inflamed knee joint having crystal arthropathies, rheumatoid arthritis, psoriatic arthritis or ostoearthritis were prospectively recruited from rheumatology clinics after giving their written consent between May and October 2015. Read More

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http://rmdopen.bmj.com/lookup/doi/10.1136/rmdopen-2017-00061
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http://dx.doi.org/10.1136/rmdopen-2017-000616DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5845411PMC
February 2018
11 Reads

Unicompartmental Knee Arthroplasty: The Past, Current Controversies, and Future Perspectives.

J Knee Surg 2018 Nov 7;31(10):992-998. Epub 2018 Mar 7.

Department of Trauma and Orthopaedics, Cambridge University Hospitals NHS Foundation Trust, Addenbrooke's Hospital, Cambridge, United Kingdom.

Unicompartmental knee arthroplasty (UKA) is a bone conserving and ligament-sparing procedure that reliably restores normal knee kinematics and function for arthritis limited either to the medial or the lateral compartment of the knee. Although there is enough evidence to demonstrate that the UKA offers good medium to long-term success given the correct patient selection, prosthesis design, and implantation technique, there are several reports to suggest inferior survival rates in comparison with the total knee arthroplasty (TKA). Furthermore, it is a specialized procedure which works well in the hands of the experienced operator and therefore different authors' tend to draw different conclusions based on the same evidence, and as a result, there is great variability in the usage of the UKA. Read More

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http://dx.doi.org/10.1055/s-0038-1625961DOI Listing
November 2018
9 Reads

[Femoral supracondylar osteotomy for the treatment of valgus knee osteoarthritis in young and middle-aged patients].

Zhongguo Gu Shang 2017 Aug;30(8):735-738

Department of Joint and Trauma Surgery, People's Hospital of Laibin, Laibin 546100, Guangxi, China.

Objective: To evaluate the clinical efficacy of open supracondylar osteotomy of the femoral condyle for the treatment of valgus knee osteoarthritis.

Methods: From April 2008 to June 2015, 21 patients with valgus knee osteoarthritis underwent an open wedge femoral supracondylar osteotomy using the distal femur dissection plates combined with autologous iliac bone graft for the bone defect. There were 8 males (8 knees) and 13 females (15 knees), ranging in age from 30 to 54 years old, with a mean age of 41. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2017.08.011DOI Listing
August 2017
7 Reads

Periarticular bone predicts knee osteoarthritis progression: Data from the Osteoarthritis Initiative.

Semin Arthritis Rheum 2018 10 31;48(2):155-161. Epub 2018 Jan 31.

Division of Rheumatology, Tufts Medical Center, Boston, MA.

Objective: Osteoarthritis (OA) is a disease with a substantial public health burden. Quantitative assessments of periarticular bone may be a biomarker capable of monitoring early disease progression. The purpose of this study was to evaluate whether measures of periarticular bone associate with longitudinal structural progression. Read More

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http://dx.doi.org/10.1016/j.semarthrit.2018.01.008DOI Listing
October 2018
11 Reads

Upper partial fibulectomy improves knee biomechanics and function and decreases knee pain of osteoarthritis: A pilot and biomechanical study.

J Biomech 2018 04 13;71:22-29. Epub 2017 Dec 13.

Department of Orthopedic Surgery, West China Hospital, West China Medical School, SiChuan University, ChengDu, SiChuan Province, People's Republic of China. Electronic address:

To investigate the change in clinical outcomes and biomechanical properties of the knee in response to upper partial fibulectomy. Sixteen patients with medial compartment knee osteoarthritis (KOA) underwent upper partial fibulectomy. Visual analog scale (VAS) pain, the hospital for special surgery knee score (HSS), hip-knee-ankle (HKA) angle (measured in the frontal plane), and flexion/extension range of motion of the knee were assessed before and up to 6 months after surgery. Read More

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http://dx.doi.org/10.1016/j.jbiomech.2017.12.004DOI Listing
April 2018
13 Reads