154,980 results match your criteria Knee Osteochondritis Dissecans


Volume change in infrapatellar fat pad is associated not with obesity but with cartilage degeneration.

J Orthop Res 2018 Dec 11. Epub 2018 Dec 11.

Department of General Medical Services, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan.

Infrapatellar fat pad has been implicated in knee osteoarthritis. We examined whether infrapatellar fat pad volume is associated with quantitative cartilage changes using magnetic resonance imaging T1ρ mapping. Fifty-eight knees of knee pain patients (19 men, 39 women, mean age 57. Read More

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December 2018

Downregulation of microRNA-23b protects against ischemia-reperfusion injury via p53 signaling pathway by upregulating MDM4 in rats.

J Cell Biochem 2018 Dec 9. Epub 2018 Dec 9.

Department of Orthopedics, The First Affiliated Hospital of Bengbu Medical College, Anhui Key Laboratory of Tissue Transplantation, Bengbu, China.

Total knee arthroplasty is a commonly performed safe procedure and typically executed in severe knee arthritis, but it also triggers ischemia-reperfusion injury (IRI). More recently, microRNAs (miRs) have been reported to play a contributory role in IRI through the key signaling pathway. Hence, the current study aimed to investigate the effect and specific mechanism of microRNA-23b (miR-23b), murine double minute 4 (MDM4), and the p53 signaling pathway in IRI rat models. Read More

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December 2018

Angioplasty versus stenting for infrapopliteal arterial lesions in chronic limb-threatening ischaemia.

Cochrane Database Syst Rev 2018 Dec 8;12:CD009195. Epub 2018 Dec 8.

Department of Medical Imaging, Gold Coast University Hospital, 1 Hospital Blvd, Southport, Queensland, Australia, 4215.

Background: Chronic limb-threatening ischaemia (CLTI) is a manifestation of peripheral arterial disease (PAD) that includes chronic ischaemic rest pain or ischaemic skin lesions, ulcers, or gangrene for longer than two weeks. The severity of the disease depends on the extent of arterial stenosis and the availability of collateral circulation. Treatment for CLTI aims to relieve ischaemic pain, heal ischaemic ulcers, prevent limb loss, improve quality of life, and prolong survival. Read More

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December 2018
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The Effects of a Functional Three-dimensional (3D) Printed Knee Joint Simulator in Improving Anatomical Spatial Knowledge.

Anat Sci Educ 2018 Dec 7. Epub 2018 Dec 7.

Division of Industrial Design, School of Design and Environment, National University of Singapore, Singapore.

In recent decades, three-dimensional (3D) printing as an emerging technology, has been utilized for imparting human anatomy knowledge. However, most 3D printed models are rigid anatomical replicas that are unable to represent dynamic spatial relationships between different anatomical structures. In this study, the data obtained from a computed tomography (CT) scan of a normal knee joint were used to design and fabricate a functional knee joint simulator for anatomical education. Read More

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December 2018

SUSAN: segment unannotated image structure using adversarial network.

Authors:
Fang Liu

Magn Reson Med 2018 Dec 10. Epub 2018 Dec 10.

Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.

Purpose: To describe and evaluate a segmentation method using joint adversarial and segmentation convolutional neural network to achieve accurate segmentation using unannotated MR image datasets.

Theory And Methods: A segmentation pipeline was built using joint adversarial and segmentation network. A convolutional neural network technique called cycle-consistent generative adversarial network (CycleGAN) was applied as the core of the method to perform unpaired image-to-image translation between different MR image datasets. Read More

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December 2018

Expression of lamin A/C protein in degenerated human intervertebral disc.

Eur Rev Med Pharmacol Sci 2018 Nov;22(22):7607-7613

Department of Spine Surgery, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.

Objective: This study aimed to evaluate the expression characteristics of lamin A/C proteins in intervertebral disc degeneration (IVD) specimens from patients with different degeneration grades. Lamin A/C proteins have been shown to result in age-related changes in the osteoarticular system. However, the expression characteristics of these nuclear proteins in degenerated human IVD tissues have not been explored previously. Read More

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November 2018

The role of increased synovial fluid A disintegrin and metalloproteinase with thrombospondin motifs4 and serglycin levels in osteoarthritis.

Authors:
Kenan Özler

Ir J Med Sci 2018 Dec 7. Epub 2018 Dec 7.

Konya Beysehir State Hospital, Beyşehir Devlet Hastanesi, 042100, Konya, Turkey.

Background: The first research to determine synovial fluid ADAMTS4 and serglycin levels in osteoarthritis and OA progression.

Aim: We aimed to determine ADAMTS4 and serglycin levels, interactions, and changes in the synovial fluid of knee OA, and also to determine effective in OA progression.

Methods: A case-control study was carried out including a total of 88 participants (29 patients late OA [LOA], 28 early OA [EOA], and 30 controls). Read More

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December 2018

Additional benefit of local infiltration of analgesia to femoral nerve block in total knee arthroplasty: double-blind randomized control study.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 8. Epub 2018 Dec 8.

Department of Orthopaedic Surgery, Kochi Medical School, Kochi University, 185-1 Oko-cho Kohasu, Nankoku, 783-8505, Japan.

Purpose: Multimodal analgesia has become an important concept in current pain management following total knee arthroplasty (TKA). However, controversy remains over what is the most accepted combination. In this study, the additional benefits of local infiltration of analgesia to femoral nerve block were evaluated. Read More

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December 2018

[Patellofemoral instability in children and adolescents].

Unfallchirurg 2018 Dec 7. Epub 2018 Dec 7.

AUVA Traumazentrum Wien, Standort Meidling, Kundratstr. 37, 1120, Wien, Österreich.

Dislocation of the patella is one of the most common knee injuries in childhood and adolescence. After detailed clinical and radiological clarification, conservative functional treatment with special orthotic devices is most commonly applied in patients with a primary dislocation without concomitant injuries; however, the redislocation rate after conservative treatment has been reported in the literature to be between 35% and 70%, depending on the risk factors present. Therefore, numerous surgical treatment options exist which are sometimes again associated with high redislocation rates and others can lead to early arthrosis of the patellofemoral joint when used indiscriminately. Read More

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December 2018

[Modified Lemaire Procedure: Indication, procedure, and clinical results].

Authors:
Andreas Flury

Orthopade 2018 Dec 7. Epub 2018 Dec 7.

Orthopädie und Traumatologie, Bürgerspital Solothurn, 4500, Solothurn, Schweiz.

Background: The mechanisms of anterior cruciate ligament (ACR) rupture may include a pivoting mechanism, which is responsible for concomitant lesions of the anterolateral structures. This anterolateral complex is the main stabilizer of tibial internal rotation and therefore accountable for a persisting pivot shift despite technical improvement of ACR reconstruction. For this reason, knee surgeons' interest in addressing anterolateral stabilization in addition to ACR reconstruction has been renewed. Read More

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December 2018

Medial collateral ligament laxity in valgus knee deformity before and after medial closing wedge high tibial osteotomy measured with instrumented laxity measurements and patient reported outcome.

J Exp Orthop 2018 Dec 10;5(1):49. Epub 2018 Dec 10.

Department of Orthopaedic Surgery, Maartenskliniek, Nijmegen, The Netherlands.

Introduction: Medial closing wedge high tibial osteotomy (CWHTO) for valgus deformity correction was first described by Coventry whom performed an additional reefing of the medial collateral ligament (MCL) to prevent instability postoperative. In our clinic the additional reefing procedure has never been performed and instability has not been reported routinely by patients. Using instrumented laxity testing, pre- and postoperative valgus and varus knee laxity can be measured objectively. Read More

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December 2018

Evaluating risk factors following surgery for periprosthetic fractures around hip and knee arthroplasties.

Arch Orthop Trauma Surg 2018 Dec 7. Epub 2018 Dec 7.

Trauma and Orthopaedics, University Hospitals of North Midlands NHS Trust, Royal Stoke Hospital, Newcastle Road, Stoke-on-Trent, ST4 6QG, UK.

Background: The increasing demand for arthroplasty has resulted in an inevitable rise in the number of periprosthetic fractures around implants. Survival factors looking into patient's comorbidities and how they influence outcome are rare. This study aims to identify correlations between survival post-injury and pre-existing comorbidities. Read More

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December 2018

Unicompartmental versus total knee arthroplasty for knee osteoarthritis.

Eur J Orthop Surg Traumatol 2018 Dec 7. Epub 2018 Dec 7.

Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.

Purpose: In the last couple of years, a significant amount of studies comparing the UKA and TKA for unicompartmental knee osteoarthritis have been published. However, there is a lack of recent meta-analysis comparing the two implants. Since the number of performed UKAs is currently increasing and the indications are obsolete, it becomes important to update current evidences and outcomes. Read More

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December 2018

Save the meniscus again!

Knee Surg Sports Traumatol Arthrosc 2018 Dec 10. Epub 2018 Dec 10.

Orthopaedic Department, Centre Hospitalier de Versailles, 177, rue de Versailles, 78157, Le Chesnay, France.

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December 2018

Posterior tibial slope angle is associated with flexion-type Salter-Harris II and Watson-Jones type IV fractures of the proximal tibia.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 10. Epub 2018 Dec 10.

Department of Orthopaedic Surgery, Nippon Medical School, 1-1-5 Sendagi, Bunkyo-ku, Tokyo, 113-8603, Japan.

Purpose: Flexion-type Salter-Harris (SH) II fractures of the proximal tibia, also described as Watson-Jones (WJ) IV fractures, are rare injuries reported among adolescent athletes who are close to skeletal maturity and remain elusive. Due to this classification disagreement, the various treatments range from nonoperative to operative types, and no previous studies have explained the mechanisms of injury or the source of the fracture forces. This retrospective matched case-control study aimed to identify radiological factors that are associated with the fracture forces and to elucidate the mechanisms of these injuries. Read More

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December 2018

A proposal for a new classification of pes anserinus morphology.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 10. Epub 2018 Dec 10.

Department of Normal and Clinical Anatomy, Interfaculty Chair of Anatomy and Histology, Medical University of Lodz, Lodz, Poland.

Purpose: The pes anserinus (PA) is characterized by high morphological diversity. As the semitendinosus and gracilis muscle tendons are routinely harvested for the reconstruction of other tendons, especially the anterior cruciate ligament (ACL), it is of clinical importance. The presence of accessory bands within PA tendons can handicap the harvesting process. Read More

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December 2018

Chrysin protects human osteoarthritis chondrocytes by inhibiting inflammatory mediator expression via HMGB1 suppression.

Mol Med Rep 2018 Dec 4. Epub 2018 Dec 4.

Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China.

High‑mobility group box chromosomal protein (HMGB‑1) contributes to osteoarthritis (OA) by modulating various oxidative, inflammatory and apoptotic signaling pathways. The effect of chrysin (CH), a natural plant flavonoid, and its functional interaction with HMGB‑1, was investigated in a chondrocyte model of OA. Human chondrocytes were pre‑treated with CH, and then subsequently treated with IL‑1β to induce the formation of chondrocytes similar to those found in OA joints. Read More

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December 2018

Multimodal ultrasonographic evaluation in a case with unossified primary synovial osteochondromatosis.

Med Ultrason 2018 Dec;20(4):527-530

2nd Internal Medicine Department, "Iuliu Hatieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania.

Primary synovial osteochondromatosis is a rare disorder and its diagnosis remains a challenge to the physician. We present the case of 36 year old patient with right knee monoarthritis in which ultrasound findings, corroborated with clinical and histopathological evidence confirmed the diagnosis of unossified primary synovial osteochondromatosis. The arthroscopy with synovectomy found multiple intra-articular loose bodies occupying the entire joint. Read More

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December 2018

Granulocyte-macrophage colony-stimulating factor receptor expression in clinical pain disorder tissues and role in neuronal sensitization.

Pain Rep 2018 Sep-Oct;3(5):e676. Epub 2018 Sep 17.

Peripheral Neuropathy Unit, Centre for Clinical Translation, Department of Medicine, Hammersmith Hospital, Imperial College London, London, United Kingdom.

Introduction: Granulocyte-macrophage colony-stimulating factor receptor (GM-CSFR) is highly expressed in peripheral macrophages and microglia, and is involved in arthritis and cancer pain in animal models. However, there is limited information on GM-CSFR expression in human central nervous system (CNS), peripheral nerves, or dorsal root ganglia (DRG), particularly in chronic pain conditions.

Objectives: Immunohistochemistry was used to quantify GM-CSFR expression levels in human tissues, and functional sensory effects of GM-CSF were studied in cultured DRG neurons. Read More

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September 2018

Costs and consequences of chronic pain due to musculoskeletal disorders from a health system perspective in Chile.

Pain Rep 2018 Sep-Oct;3(5):e656. Epub 2018 Sep 10.

Health Technology Assessment Unit, Center of Clinical Research, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.

Background: Chronic pain is a prevalent and distressing condition caused by an unceasing pain lasting more than 3 months or a pain that persists beyond the normal healing time. There is evidence of inadequate management partly explained by the unawareness regarding the magnitude of the problem.

Objectives: To estimate the annual expected costs and consequences of chronic pain caused by musculoskeletal diseases from the health system perspective in Chile. Read More

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September 2018

Anterolateral Ligament Reconstruction Practice Patterns Across the United States.

Orthop J Sports Med 2018 Dec 3;6(12):2325967118811063. Epub 2018 Dec 3.

Department of Orthopedic Surgery, Henry Ford Hospital, Detroit, Michigan, USA.

Background: A proposed mechanism for recurrent instability following anterior cruciate ligament (ACL) reconstruction is failure of the anterolateral ligament (ALL). Presently, there are a number of approaches to treating ALL pathology.

Purpose: To determine practice patterns among orthopaedic surgeons regarding ALL during ACL reconstruction. Read More

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December 2018

Improvements in Thigh Strength Symmetry Are Modestly Correlated With Changes in Self-Reported Function After Anterior Cruciate Ligament Reconstruction.

Orthop J Sports Med 2018 Nov 28;6(11):2325967118807459. Epub 2018 Nov 28.

Orthopedics Biomechanics Laboratory and Sports Medicine Center, Mayo Clinic, Rochester, Minnesota, USA.

Background: The association between quadriceps strength and functional outcomes after anterior cruciate ligament reconstruction (ACLR) is a focus of current research, while evaluations of hamstring strength are limited, despite the frequent use of hamstring autografts.

Purpose/hypothesis: The purpose of this study was to determine the relationship between changes in quadriceps and hamstring strength symmetry and self-reported outcomes before ACLR and at 12 and 24 weeks after surgery. We hypothesized that improvements in quadriceps and hamstring strength symmetry would be correlated with improvements in self-reported outcome measures within the first 6 months after ACLR. Read More

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November 2018

THE EFFECT OF KNEE JOINT COOLING ON ISOKINETIC TORQUE PRODUCTION OF THE KNEE EXTENSORS: CONSIDERATIONS FOR APPLICATION.

Int J Sports Phys Ther 2018 Dec;13(6):985-992

Rehabilitation Services, University of Central Lancashire, Preston, England.

Background: Cryotherapy is commonly used in sport for the management of injury or during recovery, however the effects on concentric isokinetic strength appear unclear when considering the effect of joint cooling distal to the anterior thigh.

Purpose: The purpose of this study was to investigate the effect of cooling of the knee joint on quadriceps concentric isokinetic torque production. The results will inform the use of cryotherapy in practice. Read More

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December 2018

NON-CONTACT ANTERIOR CRUCIATE LIGAMENT AND LOWER EXTREMITY INJURY RISK PREDICTION USING FUNCTIONAL MOVEMENT SCREEN AND KNEE ABDUCTION MOMENT: AN EPIDEMIOLOGICAL OBSERVATION OF FEMALE INTERCOLLEGIATE ATHLETES.

Int J Sports Phys Ther 2018 Dec;13(6):973-984

University of Idaho, Moscow, ID, USA.

Background: Modifiable risk factors associated with non-contact anterior cruciate ligament (ACL) injuries are highly debated, yet the incidence rate of ACL injury continues to increase. Measures of movement quality may be an effective method for identifying individuals who are at a high risk of injury.

Purpose: The purpose of this study was to investigate whether a movement screen and/or a drop-jump landing (DJL) task identifies female individuals at a higher risk for sustaining non-contact lower extremity (LE) injuries, particularly ACL injuries. Read More

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December 2018

Angle-specific analysis of isokinetic quadriceps and hamstring torques and ratios in patients after ACL-reconstruction.

BMC Sports Sci Med Rehabil 2018 6;10:23. Epub 2018 Dec 6.

5Exercise Science and Neuroscience, Department of Exercise & Health, University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany.

Background: Strength deficits, muscle imbalances, and quadriceps inhibition are common after the surgical reconstruction of the anterior cruciate ligament (ACL), even after the patient's returned-to-sport. Typically, asymmetries between the operated and non-operated leg as well as the hamstring/quadriceps (HQ) ratio are calculated using maximum isokinetic torque values. Moreover, the knee flexion angles, which correspond to the measured torque values, were not considered. Read More

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December 2018
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Quality-Adjusted Life Years After Hip and Knee Arthroplasty: Health-Related Quality of Life After 12,782 Joint Replacements.

JB JS Open Access 2018 Sep 15;3(3):e0007. Epub 2018 Aug 15.

Adult Reconstruction & Joint Replacement Division, The Hospital for Special Surgery, New York, NY.

Background: The quality-adjusted life year (QALY) is the preferred outcome measurement for cost-effectiveness analysis in health care. QALYs measure patient health-related quality of life with use of a value between 0 and 1. Few studies have provided original data delineating QALYs after hip and knee arthroplasty. Read More

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September 2018

The Practice of Overlapping Surgery Is Safe in Total Knee and Hip Arthroplasty.

JB JS Open Access 2018 Sep 24;3(3):e0004. Epub 2018 Jul 24.

Cleveland Clinic Florida, Weston, Florida.

Background: Overlapping surgery occurs when a surgeon performs 2 procedures in an overlapping time frame. This practice is commonplace in the setting of total joint arthroplasty and is intended to increase patient access to experienced surgeons, improve efficiency, and advance the surgical competence of surgeons and trainees. The practice of overlapping surgery has been questioned because of safety and ethical concerns. Read More

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September 2018

A Clinical Test to Measure Airborne Microbial Contamination on the Sterile Field During Total Joint Replacement: Method, Reference Values, and Pilot Study.

Authors:
John H Harp

JB JS Open Access 2018 Sep 24;3(3):e0001. Epub 2018 Aug 24.

Sparks Regional Medical Center, Fort Smith, Arkansas.

Background: Airborne microbe-carrying particles in the operating-room environment during total joint replacement are a risk factor for periprosthetic joint infection. The present study focuses on a simple environmental test, based on practices used in aseptic cleanrooms, to quantify the deposition of microbe-carrying particles onto the sterile field.

Methods: Settle plates are exposed Petri dishes. Read More

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September 2018

The Influence of Upper and Lower Extremity Strength on Performance-Based Sarcopenia Assessment Tests.

J Funct Morphol Kinesiol 2018 Dec 3;3(4). Epub 2018 Nov 3.

Muscle Morphology, Mechanics, and Performance Laboratory, Veterans Affairs Medical Center, Washington, DC 20422, USA; (K.B.); (E.L.); (B.A.); (V.M.).

The optimal management of sarcopenia requires appropriate endpoint measures to determine intervention efficacy. While hand grip strength is a predictor of morbidity and mortality, lower extremity strength may be better associated with functional activities in comparison to hand grip strength. The purpose of our study was to examine the comparative association of upper and lower extremity strength with common measures of physical performance in older adults. Read More

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December 2018

Percutaneous Medial Ligament Reconstruction for Valgus and Rotational Knee Instability.

Arthrosc Tech 2018 Nov 29;7(11):e1205-e1213. Epub 2018 Oct 29.

Institut de Chirurgie Orthopédique et Sportive à Strasbourg (ICOSS), Strasbourg, France.

The following surgical technique is intended for patients with chronic valgus laxity and rotational knee instability. It is a percutaneous 2-bundle ligament reconstruction method that uses the semitendinosus tendon, allowing it to remain pedicled to its distal tibial insertion. The aim is to correct the laxity without otherwise limiting the motion of the knee. Read More

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November 2018

Arthroscopic Bone Marrow Aspirate Concentrate Harvesting From the Intercondylar Notch of the Knee.

Arthrosc Tech 2018 Nov 22;7(11):e1173-e1176. Epub 2018 Oct 22.

Advanced Orthopaedics and Sports Medicine, San Francisco, California, U.S.A.

Bone marrow aspirate concentrate is commonly harvested to obtain mesenchymal stem cells, progenitor cells, and growth factors. The iliac crest is the most common donor site for bone marrow harvesting and is associated with donor site morbidity of an additional incision and pain from the harvest. Iliac crest harvesting can be cumbersome because it often requires different patient positioning from the surgical procedure and additional sedation or anesthesia for the harvest prior to repositioning. Read More

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November 2018

Open Anatomic Coracoclavicular Ligament Reconstruction by Modified Conjoint Tendon Transfer for Treatment of Acute High-Grade Acromioclavicular Dislocation.

Authors:
Naser M Selim

Arthrosc Tech 2018 Nov 15;7(11):e1157-e1165. Epub 2018 Oct 15.

Knee Surgery-Arthroscopy and Sports Injuries Unit, Orthopedic Department, Faculty of Medicine, Mansoura University Hospital, Mansoura, Egypt.

There is no ideal surgical technique for the treatment of acromioclavicular (AC) dislocations. Reconstruction of the coracoclavicular ligaments (CCLs) for the treatment of AC dislocations is evolving. Many techniques for CCL reconstruction have been described. Read More

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November 2018

Arthroscopic Complete Posterior Capsulotomy for Knee Flexion Contracture.

Arthrosc Tech 2018 Nov 15;7(11):e1135-e1139. Epub 2018 Oct 15.

Orthopedic and Trauma Department, Veteran's Memorial Teaching Hospital in Lodz, Medical University of Lodz, Lodz, Poland.

Knee flexion contracture is a clinically important complication that can be observed after trauma, after knee surgery, or as a result of osteoarthritis. When it is left untreated, knee shearing forces increase not only in the affected joint but also in the contralateral knee, leading to mechanical overload in both limbs. Conservative management is a first-line treatment option for extension deficits, but when it fails, surgical treatment is necessary. Read More

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November 2018

Surgical Repair of Dynamic Snapping Biceps Femoris Tendon.

Arthrosc Tech 2018 Nov 8;7(11):e1129-e1133. Epub 2018 Oct 8.

Steadman Philippon Research Institute, Vail, Colorado, U.S.A.

A snapping biceps tendon is an infrequently seen and commonly misdiagnosed pathology, leaving patients with persistent symptoms that can be debilitating. Patients will present with a visible, audible, and/or painful snap over the lateral aspect of their knee when performing squats, sitting in low seats, or participating in activities with deep knee flexion. A thorough knowledge of the anatomy is essential for surgical treatment of this pathology, which is caused by a detachment of the direct arms of the long and short heads of the biceps femoris off the fibular styloid. Read More

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November 2018

Arthroscopic Treatment of Popliteal Cysts.

Arthrosc Tech 2018 Nov 8;7(11):e1109-e1114. Epub 2018 Oct 8.

Division of Sports Medicine, Michigan State University, East Lansing, Michigan, U.S.A.

Popliteal cysts, often referred to as Baker's cysts, are a common occurrence in the adult knee. Although controversy exists as to the exact indications for treatment, these structures can cause extreme discomfort and morbidity, including pain from rupture and symptoms from neurovascular compromise. Prior to the development of the arthroscope, open treatment of popliteal cysts was not uncommon. Read More

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November 2018

Knee Arthroscopy: A Diagnostic and Therapeutic Tool for Management of Ochronotic Arthropathy.

Arthrosc Tech 2018 Nov 1;7(11):e1097-e1101. Epub 2018 Oct 1.

Stetson Powell Orthopedics and Sports Medicine, Burbank, California, U.S.A.

The surgical treatment of ochronotic arthropathy remains unclear. Although there is no absolute cure for ochronotic arthropathy, current management typically begins with conservative treatment. Total joint replacement may eventually be necessary for joints that become severely degenerative. Read More

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November 2018

Biologically Augmented Quadriceps Tendon Autograft With Platelet-Rich Plasma for Anterior Cruciate Ligament Reconstruction.

Arthrosc Tech 2018 Nov 1;7(11):e1063-e1069. Epub 2018 Oct 1.

Cedars Sinai Kerlan Jobe Institute, Santa Monica, California, U.S.A.

Anterior cruciate ligament (ACL) reconstruction is one of the most common procedures studied in the orthopaedic literature. In this regard, graft preparation is a key factor for successful outcomes. Although current methods to reconstruct the ACL are generally perceived to be successful, recent studies indicate that normal structure and function of the knee are fully restored in less than half of the patients. Read More

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November 2018

Economic Analysis in a Diagnosis Related Groups System for Two-stage Exchange of Prosthetic-joint Infections.

J Bone Jt Infect 2018 24;3(5):249-254. Epub 2018 Nov 24.

Centre hospitalier universitaire vaudois (CHUV), Service d'orthopédie et de traumatologie, Rue du Bugnon 46, 1011 Lausanne, Switzerland.

There is a constant increase of joint arthroplasties performed, with an infectious risk of 1-2%. Different therapeutic options for prosthetic-joint infections exist, but surgery remains essential. With a two-stage exchange procedure, a success rate above 90% can be expected. Read More

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November 2018

Accuracy of Synovial Leukocyte and Polymorphonuclear Cell Count in Patients with Shoulder Prosthetic Joint Infection.

J Bone Jt Infect 2018 11;3(5):245-248. Epub 2018 Nov 11.

Department of Orthopaedics and Traumatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland.

Joint aspiration in suspected infected implants is a validated diagnostic method in establishing the diagnosis of prosthetic joint infection (PJI). Cut-off values for synovial leukocyte counts and differentials are well described for patients with hip and knee PJI. In 19 failed shoulder implants, a leucocyte count of >12. Read More

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November 2018

Slipped Upper Femoral Epiphysis: Are We Missing the Point?

Cureus 2018 Oct 1;10(10):e3394. Epub 2018 Oct 1.

Trauma & Orthopaedic Surgery, Galway University Hospital, Galway, IRL.

Slipped upper femoral epiphysis (SUFE) is one of the most common orthopaedic conditions in adolescents. SUFE typically presents as hip pain and limping, but it may present deceptively as knee pain or contralateral hip pain. We discuss a case of a child with a deceptive presentation of SUFE resulting in delayed diagnosis. Read More

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October 2018

Prevalence and treatment of hip and knee osteoarthritis in people aged 60 years or older in Germany: an analysis based on health insurance claims data.

Clin Interv Aging 2018 14;13:2339-2349. Epub 2018 Nov 14.

Department of Health Services Research, Carl von Ossietzky University, Oldenburg, Germany.

Objective: Osteoarthritis (OA) is highly prevalent throughout the world, especially in the elderly population, and is strongly associated with patients' frailty. However, little is known about the prevalence and treatment of OA in elderly patients in routine clinical care in Germany.

Materials And Methods: As a part of Linking Patient-Reported Outcomes with CLAIms Data for Health Services Research in Rheumatology (PROCLAIR), a cross-sectional study using claims data from a large Germany statutory health insurance (BARMER) was conducted. Read More

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November 2018

Comparative evaluation of monopolar and bipolar radiofrequency ablation of genicular nerves in chronic knee pain due to osteoarthritis.

Indian J Anaesth 2018 Nov;62(11):876-880

Department of Anesthesia and Pain Relief Services, Tata Motors Hospital, Jamshedpur, Jharkhand, India.

Background And Aims: Monopolar radiofrequency ablation (MRFA) of the genicular nerve is effective in managing chronic knee pain from osteoarthritis (OA); however, the procedure itself is associated with significant pain due to manipulation of electrode to localise tiny genicular nerves. We hypothesised that inserting two electrodes to target the genicular nerves [bipolar radiofrequency ablation (BRFA)] without sensory localisation can decrease the procedural pain with equal analgesic efficacy in treating knee pain.

Methods: Thirty patients with chronic knee pain due to OA were randomised to receive either MRFA ( = 15) or BRFA ( = 15), after having 50% pain relief with diagnostic genicular nerve block. Read More

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November 2018
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Functional Ultrasonography in Diagnosing Anterior Cruciate Ligament Injury as Compared to Magnetic Resonance Imaging.

Indian J Orthop 2018 Nov-Dec;52(6):638-644

Department of Orthopaedics and Radiodiagnosis, All India Institute of Medical Sciences, Patna, Bihar, India.

Background: Magnetic resonance imaging (MRI) has been gold standard investigation for diagnosing anterior cruciate ligament (ACL) tear. Availability and cost are two main factors limiting the universal use of MRI in all those patients in whom ligament injury is suspected. We compared the outcome of functional USG with gold standard MRI scan in this prospective study. Read More

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December 2018

An approach to floating knee injury in Indian Population: An analysis of 52 patients.

Indian J Orthop 2018 Nov-Dec;52(6):631-637

Orthopaedic Department, V. S. General Hospital, Ahmedabad, Gujarat, India.

Background: Floating knee is a condition resulting from high energy trauma usually associated with minor to life threatening injuries making it challanging to treat There are no studies available in literature describing cross leg sitting and squatting after surgical management of floating knee. This study analyzes prognostic factors, plan of management, functional outcomes (special attention to squatting and cross legged sitting), complications.

Materials And Methods: 52 patients with floating knee injuries treated over a period of 3 years were included in this study. Read More

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December 2018
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Ultrasonography of the late-stage knee osteoarthritis prior to total knee arthroplasty: comparison of the ultrasonographic, radiographic and intra-operative findings.

Sci Rep 2018 Dec 10;8(1):17742. Epub 2018 Dec 10.

Department of Diagnostic Radiology, Oulu University Hospital, P.O. Box 50, 90029, Oulu, Finland.

The purpose of this study was to assess the effectiveness of the ultrasonography (US) on detecting osteoarthritis of the knee, and compare US and radiographic findings to intraoperative total knee arthroplasty (TKA) findings. Fifty-seven late-stage osteoarthritic knees undergoing TKA were evaluated with US and radiography. Standard knee US assessing femoral cartilage damage, osteophytes, effusion, synovitis, and meniscal extrusion was performed. Read More

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December 2018

[Damage to subcutaneous nerves in endovenous laser coagulation of the great saphenous vein].

Angiol Sosud Khir 2018 ;24(4):81-87

Department of Surgery, Institute of Additional Professional Education, South Ural State Medical University of the RF Ministry of Public Health, Chelyabinsk, Russia.

The purpose of this study was to assess the incidence of the development of symptoms of damage to subcutaneous nerves after endovenous laser coagulation (EVLC) of the great saphenous vein (GSV), as well as to determine the effect of these symptoms on quality of life (QoL) of patients. Our retrospective study enrolled a total of 119 patients (mean age 50±13.9 years) subjected to 151 isolated EVLC of the GSV. Read More

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January 2018
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[Use of contrast-enhanced ultrasound for assessment of the state of femoropopliteal bypass graft anastomoses].

Angiol Sosud Khir 2018 ;24(4):50-53

Volga Region Research Medical University of the RF Ministry of Public Health, Nizhniy Novgorod, Russia.

Analysed herein is the experience of the first eight ultrasonographic studies of peripheral arteries with dynamic contrast enhancement using sulphur hexafluoride («SonoVue») carried out in patients after previously performed femoropopliteal bypass grafting with a synthetic prosthesis (in seven cases the distal anastomosis of the bypass graft was located below the fissure of the knee joint and in one case - above the fissure of the knee joint). Contrast-enhanced ultrasonography was performed averagely 12.5±4. Read More

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January 2018

Cardiorespiratory and Muscle Oxygenation Responses to Isokinetic Test in COPD.

Med Sci Sports Exerc 2018 Dec 5. Epub 2018 Dec 5.

Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec, Québec, CANADA.

Purpose: To describe cardiorespiratory, quadriceps oxygenation, and muscle fatigue responses during a one-legged quadriceps isokinetic endurance exercise in COPD and control subjects.

Methods: Fourteen patients with COPD and 14 control subjects performed a cardiopulmonary cycling exercise test (CPET) to exhaustion to assess peak oxygen consumption (V˙O2peak), minute ventilation (V˙E2peak) and heart rate (HRpeak). They also performed a quadriceps isokinetic endurance exercise consisting in 30 maximal knee-extensions at 90°/s with continuous monitoring of expired gases, cardiac output (CO) and oxygenation of the quadriceps by near-infrared spectroscopy. Read More

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December 2018

The Effect of Cadence on the Mechanics and Energetics of Constant Power Cycling.

Med Sci Sports Exerc 2018 Dec 5. Epub 2018 Dec 5.

The University of Queensland, School of Human Movement & Nutrition Sciences, Centre for Sensorimotor Performance, Brisbane, Australia.

At a constant power output, cyclists prefer to use a higher cadence than those that minimise metabolic cost. The neuromuscular mechanism underpinning the preferred higher cadence remains unclear.

Purpose: The aim of this study was to investigate the effect of cadence on joint level work and vastus lateralis (VL) fascicle mechanics while cycling at a constant, submaximal, power output. Read More

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December 2018

Is There a Force Target That Predicts Early Patient-reported Outcomes After Kinematically Aligned TKA?

Clin Orthop Relat Res 2018 Dec 7. Epub 2018 Dec 7.

T. J. Shelton, M. L. Hull Department of Orthopaedic Surgery, University of California, Davis, Sacramento, CA, USA S. M. Howell, M. L. Hull Department of Biomedical Engineering, University of California, Davis, Davis, CA, USA M. L. Hull Department of Mechanical Engineering, University of California, Davis, Davis, CA, USA.

Background: Four mechanical alignment force targets are used to predict early patient-reported outcomes and/or to indicate a balanced TKA. For surgeons who use kinematic alignment, there are no reported force targets. To date the usefulness of these mechanical alignment force targets with kinematic alignment has not been reported nor has a specific force target for kinematic alignment been identified. Read More

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December 2018