21,567 results match your criteria Patellar Injury and Dislocation


[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

View Article
December 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

View Article
December 2018

Anterior Closing-Wedge Osteotomy for Posterior Slope Correction.

Arthrosc Tech 2018 Nov 1;7(11):e1079-e1087. Epub 2018 Oct 1.

Department of Orthopaedic and Trauma Surgery, Martin Luther Hospital, Berlin, Germany.

Increased tibial slope can be a cause of recurrent instability after anterior cruciate ligament reconstruction. This article presents a technique for an anterior closing-wedge osteotomy for slope correction. The indications for this procedure are patients with recurrent instability after anterior cruciate ligament reconstruction with a neutral leg axis or slightly varus deformity and a posterior slope of more than 12°. Read More

View Article
November 2018

Computational model for the patella onset.

PLoS One 2018 11;13(12):e0207770. Epub 2018 Dec 11.

Biomimetics Laboratory, Instituto de Biotecnología, Universidad Nacional de Colombia, Bogotá, Ciudad Universitaria, Colombia.

The patella is a sesamoid bone embedded within the quadriceps tendon and the patellar tendon that articulates with the femur. However, how is it formed is still unknown. Therefore, here we have evaluated, computationally, how three theories explain, independently, the patella onset. Read More

View Article
December 2018

Posture and firmness changes in a pressure-relieving air mattress affect cough strength in elderly people with dysphagia.

PLoS One 2018 11;13(12):e0208895. Epub 2018 Dec 11.

Department of Physical Analysis and Therapeutic Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.

Dysphagia is the major pathophysiologic mechanism leading to aspiration pneumonia in the elderly. Elderly people with dysphagia who show low levels of the cough peak flow (CPF) are at greater risk for aspiration pneumonia. It has been reported that CPF values were significantly lower in the "soft" versus "hard" mode of a pressure-relieving air mattress in healthy volunteers in a supine position. Read More

View Article
December 2018
1 Read

Rupture of the Patellar Tendon After Platelet-Rich Plasma Treatment: A Case Report.

Clin J Sport Med 2018 Dec 3. Epub 2018 Dec 3.

Sant'Andrea Hospital, Traumatology Sports Center "Kilk Kilgour," "La Sapienza" University, Rome, Italy.

Introduction: Rupture of the patellar tendon is becoming more and more frequent, even in sports activities overloading the extensor mechanism of the knee. Platelet-rich plasma (PRP) treatment has been recently introduced in treatment for several knee- and sport-related injuries including muscle strain cartilage defect and tendinopathies. The aim of this case report is to present a case of rupture of the patellar tendon occurred after injections of PRP. Read More

View Article
December 2018

Patellar tendon enthesis abnormalities and their association with knee pain and structural abnormalities in older adults.

Osteoarthritis Cartilage 2018 Dec 5. Epub 2018 Dec 5.

Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia. Electronic address:

Objective: To describe associations between presence of patellar tendon enthesis (PTE) abnormalities and symptoms, structural abnormalities, and total knee replacement (TKR) in older adult cohort.

Methods: PTE abnormalities (presence of abnormal bone signal and/or bone erosion), were measured on T2-weighted magnetic resonance images at baseline in 961 community-dwelling older adults. Knee pain and function limitation were assessed using Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Read More

View Article
December 2018
1 Read

The Knee Osteoarthritis Grading System for Arthroplasty.

J Arthroplasty 2018 Nov 15. Epub 2018 Nov 15.

Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom.

Background: The aim of this study is to validate the Knee Osteoarthritis Grading System (KOGS) of progressive osteoarthritic degeneration for the tri-compartmental knee. This system defines the site and severity of osteoarthritis to determine a specific knee arthroplasty.

Methods: The radiographic sequence for KOGS includes standing coronal (anteroposterior), lateral, 30° skyline patella, 15° and 45° Rosenberg and stress views in 20° of flexion. Read More

View Article
November 2018

Comparison of Pain Measures Between Tendons of Elite Basketball Players With Different Sonographic Patterns.

J Sport Rehabil 2018 Dec 11:1-17. Epub 2018 Dec 11.

4 Department of Physical Therapy, University of Murcia, Murcia, Spain.

Context:: The prevalence and negative consequences of the symptoms surrounding patellar tendinopathy constitute an important problem for sports medicine professionals. The identification of potential pain mediators is therefore of major interest in order to improve both the prevention and management of this injury.

Objective:: To compare the pain experienced by elite male adult basketball players and patterns of patellar tendon abnormalities. Read More

View Article
December 2018

Adductor canal block with a suture-method catheter - A parallel or perpendicular approach?

Acta Anaesthesiol Scand 2018 Dec 6. Epub 2018 Dec 6.

Department of Anaesthesia and Intensive Care Medicine, Copenhagen University Hospital, Nordsjaellands Hospital, Hillerød, Denmark.

Background: We performed a randomised blinded pilot study in 16 healthy volunteers to assess whether placing a suture-method catheter in the adductor canal is feasible with two different insertion techniques.

Methods: Each volunteer had a suture-method catheter placed approximately halfway between the superior anterior iliac spine and base of the patella in both legs. Catheters were placed using a parallel technique in one leg and a perpendicular technique in the other leg, according to randomisation. Read More

View Article
December 2018
3 Reads

Quantifying anterior knee pain during specific activities after using the bone-patellar tendon-bone graft for arthroscopic anterior cruciate ligament reconstruction.

Asia Pac J Sports Med Arthrosc Rehabil Technol 2019 Jan 16;15:6-12. Epub 2018 Nov 16.

Department of Orthopaedic Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.

Background/objective: There has been much debate about the optimal graft choice for an anterior cruciate ligament (ACL) reconstruction. Anterior knee pain is a common donor site problem when using a bone-patellar tendon-bone (BPTB) graft. However, knowledge of the characteristics of anterior knee pain during different daily activities is still limited. Read More

View Article
January 2019

Factors Affecting Tibial Tuberosity-Trochlear Groove Distance in Recurrent Patellar Dislocation.

Clin Orthop Surg 2018 Dec 21;10(4):420-426. Epub 2018 Nov 21.

Center for Joint Disease, Chonnam National University Hwasun Hospital, Hwasun, Korea.

Background: The tibial tuberosity-trochlear groove (TT-TG) distance is used to determine the necessity of tibial tubercle osteotomy. We conducted this study to determine the extent to which each of the tibial tuberosity lateralization, trochlear groove medialization, and knee rotation angle affects the TT-TG distance in both normal and patella dislocated patients and thereby scrutinize the rationale for tuberosity transfer based on the TT-TG distance.

Methods: Retrospective analysis of rotational profile computed tomography was done for patella dislocated and control group patients. Read More

View Article
December 2018
1 Read

How to Avoid Graft-Tunnel Length Mismatch in Modified Transtibial Technique for Anterior Cruciate Ligament Reconstruction Using Bone-Patellar Tendon-Bone Graft.

Clin Orthop Surg 2018 Dec 21;10(4):407-412. Epub 2018 Nov 21.

Department of Orthopedic Surgery, Yonsei Sarang Hospital, Seoul, Korea.

Background: We conducted this study to determine the optimal length of patellar and tibial bone blocks for the modified transtibial (TT) technique in anterior cruciate ligament (ACL) reconstruction using the bone-patellar tendon-bone (BPTB) graft.

Methods: The current single-center, retrospective study was conducted in a total of 64 patients with an ACL tear who underwent surgery at our medical institution between March 2015 and February 2016. After harvesting the BPTB graft, we measured its length and that of the patellar tendon, patellar bone block, and tibial bone block using the arthroscopic ruler and double-checked measurements using a length gauge. Read More

View Article
December 2018

Total knee arthroplasty in a patient with nail-patella syndrome (NPS).

Knee 2018 Nov 29. Epub 2018 Nov 29.

Houston Methodist Othopedics & Sports Medicine, Houston, TX, United States of America. Electronic address:

Nail-patella syndrome (NPS) or hereditary onycho-osteodyaplasia is a rare genetic condition involving a mutation in the LMX1B gene affecting nails, elbows, knees, and pelvis. Due to the regulatory functions of the gene in many developmental processes through the body, patients with NPS experience wide-ranging musculoskeletal problems including patellar instability, fingernail anomalies, iliac exostoses/horns, and elbow abnormalities. The patellar changes often involve aplasia, hypoplasia, and chronic dislocation. Read More

View Article
November 2018
1 Read

Persistent morbidity after Medial Patellofemoral Ligament Reconstruction - A registry study with an eight-year follow-up on a nationwide cohort from 1996 to 2014.

Knee 2018 Nov 28. Epub 2018 Nov 28.

Dept. of Orthopedic Surgery, Clinical Orthopedic Research Hvidovre (CORH), Copenhagen University Hospital Hvidovre, Denmark. Electronic address:

Background: To evaluate the trends in treatment of patellar dislocation in the Danish population as a whole from 1996 to 2014 and evaluate the incidence of persistent morbidity after Medial Patellofemoral Ligament Reconstruction (MPFL-R).

Methods: This epidemiological study was performed by retrospectively searching the Danish National Patients Registry from 1996 to 2014. The study investigated the trends in surgery performed on patients with patellar dislocations and the risk of persistent patellar morbidity (PPM) with an eight-year follow-up. Read More

View Article
November 2018

Interrelationship of cartilage composition and chondrocyte mechanics after a partial meniscectomy in the rabbit knee joint - Experimental and numerical analysis.

J Biomech 2018 Nov 19. Epub 2018 Nov 19.

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

Site-specific and depth-dependent properties of cartilage were implemented within a finite element (FE) model to determine if compositional or structural changes in the tissue could explain site-specific alterations of chondrocyte deformations due to cartilage loading in rabbit knee joints 3 days after a partial meniscectomy (PM). Depth-dependent proteoglycan (PG) content, collagen content and collagen orientation in the cartilage extracellular matrix (ECM), and PG content in the pericellular matrix (PCM) were assessed with microscopic and spectroscopic methods. Patellar, femoral groove and samples from both the lateral and medial compartments of the femoral condyle and tibial plateau were extracted from healthy controls and from the partial meniscectomy group. Read More

View Article
November 2018

An intraoperative load sensor did not improve the early postoperative results of posterior-stabilized TKA for osteoarthritis with varus deformities.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 3. Epub 2018 Dec 3.

Department of Medicine, Graduate School, Kyung Hee University, 23 Kyunghee-daero, Dongdaemun-gu, Seoul, 130-872, South Korea.

Purpose: In the present study, the early results of sensor-assisted versus manually balanced posterior-stabilized total knee arthroplasty (TKA) for osteoarthritis with varus deformities were prospectively compared.

Methods: Fifty patients undergoing sensor-assisted TKA (group S) and 50 patients receiving manually balanced TKA (group M) were prospectively compared. The groups did not differ in terms of demographics, preoperative clinical status, or severity of deformity. Read More

View Article
December 2018

The influence of compressive forces across the patellofemoral joint on patient-reported outcome after bi-cruciate stabilized total knee arthroplasty.

Bone Joint J 2018 Dec;100-B(12):1585-1591

Department of Orthopedic Surgery (Ohashi), Toho University School of Medicine, Tokyo, Japan.

Aims: Patellofemoral problems are a common complication of total knee arthroplasty. A high compressive force across the patellofemoral joint may affect patient-reported outcome. However, the relationship between patient-reported outcome and the intraoperative patellofemoral contact force has not been investigated. Read More

View Article
December 2018
2 Reads

Trochleoplasty provides good clinical outcomes and an acceptable complication profile in both short and long-term follow-up.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 29. Epub 2018 Nov 29.

Division of Orthopaedic Surgery, Department Surgery, McMaster University, Hamilton, ON, Canada.

Purpose: The purpose of this study is to report on the global distribution and clinical outcomes of published articles related to trochleoplasty.

Methods: The online databases OVID Medline, OVID EMBASE, and the Cochrane Library were searched for the literature assessing trochleoplasty performed for lateral patellofemoral instability (LPI). Study data were abstracted looking at global trends in the literature, as well as clinical and patient-reported outcomes following this technique. Read More

View Article
November 2018

Influence of Patella Height on Total Knee Arthroplasty: Outcomes and Survival.

J Arthroplasty 2018 Nov 8. Epub 2018 Nov 8.

Service de chirurgie orthopédique, Hôpital de la Croix-Rousse, Université Lyon 1, Lyon, France.

Background: The aim of this study is to assess clinical results of total knee arthroplasty (TKA) with pre-operative patella alta or patella baja, compared to TKA with pre-operative normal patellar height.

Methods: Patella height was measured using the Blackburne-Peel (BP) method in an initial, prospective cohort of 4103 TKAs performed at a single center. Three groups were defined: normal patella height (0. Read More

View Article
November 2018
1 Read

Axial patellar engagement index and patellar tilt after medial patello-femoral ligament reconstruction in children and adolescents.

Orthop Traumatol Surg Res 2018 Nov 26. Epub 2018 Nov 26.

Department of paediatric orthopaedic surgery, hôpital femme-mère-enfant de Lyon, hospices civils de Lyon, université Claude-Bernard Lyon 1, 69500 Bron, France.

Background: The medial patello-femoral ligament (MPFL) is a major patellar stabiliser whose reconstruction in adults involves graft fixation within a femoral tunnel. In skeletally immature patients, in contrast, the graft is fixed to the soft tissues to allow normal growth. The primary objective of this prospective study was to perform computed tomography (CT) and magnetic resonance imaging (MRI) assessments of medium-term correction of patellar tilt and of the axial patellar engagement index (AEI) after a paediatric variant of MPFL reconstruction in skeletally immature patients. Read More

View Article
November 2018
1 Read

Physiological, kinematic, and electromyographic responses to kinesiology-type patella tape in elite cyclists.

J Electromyogr Kinesiol 2018 Nov 19;44:36-45. Epub 2018 Nov 19.

School of Health Sciences, University of Central Lancashire, Preston, Lancashire, United Kingdom.

Kinesiology-type tape (KTT) has become popular in sports for injury prevention, rehabilitation, and performance enhancement. Many cyclists use patella KTT; however, its benefits remain unclear, especially in uninjured elite cyclists. We used an integrated approach to investigate acute physiological, kinematic, and electromyographic responses to patella KTT in twelve national-level male cyclists. Read More

View Article
November 2018
1 Read

Treatment of feline patellar luxation with polyethylene sulcal ridge prostheses.

Authors:
J Mills T Hargittai

J Small Anim Pract 2018 Nov 28. Epub 2018 Nov 28.

Anderson Veterinary Surgery, Orpington, Kent, BR6 0SA, UK.

Patellar luxation and associated pelvic limb lameness were treated with polyethylene sulcal ridge augmentation prostheses in four cats. In all cases, the lameness resolved within weeks of a single surgery. No important complications were encountered. Read More

View Article
November 2018
2 Reads

Protein Levels and Microstructural Changes in Localized Regions of Early Cartilage Degeneration Compared with Adjacent Intact Cartilage.

Cartilage 2018 Nov 28:1947603518809401. Epub 2018 Nov 28.

2 Department of Chemical and Materials Engineering, Experimental Tissue Mechanics Laboratory, University of Auckland, Auckland, New Zealand.

Objective: It was hypothesized that the respective protein profiles of bovine cartilage from sites of localized mild to moderate (GI to GII) degeneration versus adjacent sites of intact tissue would vary in accordance with the tissue microstructural changes associated with a pre-osteoarthritic state.

Methods: A total of 15 bovine patellae were obtained for this study. Paired samples of tissue were collected from the lateral region of each patella. Read More

View Article
November 2018

A new remarkable short-tailed whip-scorpion species of Piaroa (Arachnida, Schizomida, Hubbardiidae) from the Colombian Caribbean region.

Zootaxa 2018 Oct 15;4500(1):91-103. Epub 2018 Oct 15.

Grupo de Investigación Biología Descriptiva y Aplicada, Grupo de Investigación Hidrobiología. Programa de Biología, Universidad de Cartagena, Sede San Pablo, Barrio Zaragocilla 120, Carrera. 50 #24, Cartagena de Indias, Bolívar, Colombia..

Herein, we describe a new schizomid species from the genus Piaroa Villarreal, Giuponni Tourinho, 2008, Piaroa turbacoensis sp. nov., based on individuals collected in the Botanical Garden "Guillermo Piñeres", Turbaco, Bolivar, Colombian Caribbean region. Read More

View Article
October 2018

Recurrence of Patellar Instability in Adolescents Undergoing Surgery for Osteochondral Defects Without Concomitant Ligament Reconstruction.

Am J Sports Med 2018 Nov 28:363546518808486. Epub 2018 Nov 28.

Department of Orthopedic Surgery, University of California, San Diego, California, USA.

Background:: First-time patellar dislocation with an associated chondral or osteochondral loose body is typically treated operatively to address the loose fragment. The incidence of recurrent instability in this patient population if the medial patellofemoral ligament (MPFL) is not reconstructed is unknown.

Purpose:: To determine the recurrent instability rate in patients undergoing surgery for patellar instability with chondral or osteochondral loose bodies, as well as to identify and stratify risk factors for recurrent instability. Read More

View Article
November 2018
1 Read

Suboptimal patellofemoral alignment is associated with poor clinical outcome scores after primary total knee arthroplasty.

Arch Orthop Trauma Surg 2018 Nov 27. Epub 2018 Nov 27.

Stanford University Medical Center Outpatient Center, 450 Broadway St., M/C 6342, Redwood City, CA, 94063, USA.

Background: Proper patellofemoral alignment is an important goal in total knee arthroplasty (TKA). Acceptable patellar alignment is defined as patellar tilt less than or equal to 5° and patellar displacement less than or equal to 5 mm. Previous studies reported an incidence of post-operative patellar malalignment in TKA from 7 to 35%. Read More

View Article
November 2018
1.310 Impact Factor

Lateral retinacular release is not recommended in association to MPFL reconstruction in recurrent patellar dislocation.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 27. Epub 2018 Nov 27.

FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix Rousse Hospital, Civil Hospices of Lyon, 103 Boulevard de la Croix Rousse, 69004, Lyon, France.

Purpose: Reconstruction of the medial patellofemoral ligament (MPFL) has become the gold standard for the treatment of the recurrent patellar dislocation (RPD). Lateral retinacular release can be performed in association with MPFL reconstruction, but the effect on outcomes is not clear. To evaluate the effect of lateral release on outcomes following MPFL reconstruction is the aim of this study. Read More

View Article
November 2018

Transtibial pullout repair of medial meniscus posterior root tear restores physiological rotation of the tibia in the knee-flexed position.

Orthop Traumatol Surg Res 2018 Nov 24. Epub 2018 Nov 24.

Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikatacho, Kitaku, 700-8558 Okayama, Japan.

Background: Medial meniscus posterior root tear (MMPRT) results in joint overloading and degenerative changes in the knee. Favorable clinical outcomes have been reported after transtibial pullout repair of MMPRT. To date, however, in vivo tibial rotational changes before and after root repair remain poorly understood. Read More

View Article
November 2018
1 Read

Anterior Cruciate Ligament Reconstruction Using a Bone-Patellar Tendon-Bone Graft With and Without a Ligament Augmentation Device: A 25-Year Follow-up of a Prospective Randomized Controlled Trial.

Orthop J Sports Med 2018 Nov 20;6(11):2325967118808778. Epub 2018 Nov 20.

Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.

Background: Various grafts and ligament augmentation devices (LADs) have been used in the search for optimal reconstruction of the anterior cruciate ligament (ACL).

Purpose: To compare 25-year follow-up results after ACL reconstruction using a bone-patellar tendon-bone (BPTB) graft with or without the Kennedy LAD.

Study Design: Randomized controlled trial; Level of evidence, 1. Read More

View Article
November 2018
1 Read

Advanced Patellar Tendinopathy Is Associated With Increased Rates of Bone-Patellar Tendon-Bone Autograft Failure at Early Follow-up After Anterior Cruciate Ligament Reconstruction.

Orthop J Sports Med 2018 Nov 19;6(11):2325967118807710. Epub 2018 Nov 19.

Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.

Background: Revision anterior cruciate ligament (ACL) reconstruction can be potentially devastating for a patient. As such, it is important to identify prognostic factors that place patients at an increased risk for graft failure. There are no data on the effects of patellar tendinopathy on failure of ACL reconstruction when using a bone-patellar tendon-bone (BPTB) autograft. Read More

View Article
November 2018
5 Reads

Methicillin-resistant patellar tendon abscess and septic prepatellar bursitis in an injection drug user.

Radiol Case Rep 2019 Feb 16;14(2):238-241. Epub 2018 Nov 16.

Department of Radiology, University of Kansas Medical Center, 3901 Rainbow Boulevard, MS 4032, Kansas City, KS 66160, USA.

We report a case of intratendinous patellar abscess and prepatellar septic bursitis following direct inoculation in a 26-year-old male injection drug user. The patient presented with 2 days of progressive knee pain, swelling, and erythema. Computed tomography demonstrated an enlarged patellar tendon with central low attenuation. Read More

View Article
February 2019
2 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

View Article
November 2018
1 Read

Can Elite Dancers Return to Dance After Ultrasound-Guided Platelet-Rich Plasma (PRP) Injections?

J Dance Med Sci 2018 Dec;22(4):225-232

Center for Musculoskeletal Care, New York University Langone Medical Center, New York, New York, USA.

Dancers exert tremendous stresses on the lower extremities rendering them prone to injuries that can curtail training and performance. The goal of this study was to evaluate clinical improvement in a population of elite dancers following treatment with ultrasound-guided platelet-rich plasma (PRP) injections of various lower extremity sites by assessing when they were able to return to dance. Nineteen dancers (13 female, 6 male; ages 15 to 42) were treated between 2009 and 2016 at sites that included: hamstring tendon (1), proximal iliotibial band (1), patellar tendon (3), posterior tibial tendon (5), peroneus brevis tendon (3), plantar fascia (3), and the first metatarsophalangeal (MTP) joint capsule (3). Read More

View Article
December 2018
2 Reads

Patellar Tendon Stiffness in Elite Breakdancers Assessed by Myotonometric Measurement.

J Dance Med Sci 2018 Dec;22(4):179-183

Clinica MEDS, Santiago, Chile.

Studies that have investigated the epidemiology of injuries in breakdancing have concluded that the second most common injury site is the knee and that the majority of breakdancers have experienced overuse syndrome. Tendon stiffness, the relationship between force applied to a tendon and the resulting displacement, has been identified as a primary mechanical factor in such injuries. However, patellar tendon stiffness has not yet been evaluated in elite breakdancers. Read More

View Article
December 2018
1 Read

Mismatch between femur and tibia coronal alignment in the knee joint: classification of five lower limb types according to femoral and tibial mechanical alignment.

BMC Musculoskelet Disord 2018 Nov 24;19(1):411. Epub 2018 Nov 24.

Department of Medical Research, Taichung Veterans General Hospital, 1650, Taiwan Boulevard Sect. 4, Taichung City, 40705, Taiwan.

Background: Reasons for dissatisfaction with total knee arthroplasty (TKA) include unequal flexion or extension gap, soft tissue imbalance, and patella maltracking, which often occur with mismatch between femoral and tibial coronal bony alignment in the knee joint or extremely varus or valgus alignment. However, lower limb coronal alignment classification is based only on hip-knee-ankle angle (HKAA), leading to oversight regarding a mismatch between femoral and tibial coronal alignment. We aimed to classify alignment of the lower limbs according to the mechanical alignment of the femur and tibia in a healthy population. Read More

View Article
November 2018
4 Reads

Clinical Management of Medial Patellar Plica Syndrome: Expert Point of View from Diagnosis to Treatment

Curr Rheumatol Rev 2018 11 23. Epub 2018 Nov 23.

Department of Nutrition and Dietetics, Faculty of Health Sciences, Beirut Arab University, P.O. Box 11-5020 Riad El Solh, Beirut. Lebanon.

Synovial plicae are thickenings of the synovial knee membrane; they are very frequent and often asymptomatic. However, they can become symptomatic due to idiopathic or secondary causes, as trauma and inflammation of the synovial tissue. Currently, synovial plicae are classified as infrapatellar, mediopatellar and suprapatellar. Read More

View Article
November 2018

Shape Analysis of the Patellar Bone Surface and Cutting Plane for Knee Replacement Surgery.

Comput Math Methods Med 2018 24;2018:6490425. Epub 2018 Oct 24.

Biomedical Engineering, University of Calgary, Calgary, Canada.

Geometry of the patella (kneecap) remains poorly understood yet is highly relevant to performing the correct patellar cut to reduce pain and to improve function and satisfaction after knee replacement surgery. Although studies routinely refer to "parallel to the anterior surface" and "the patellar horizon," a quantitative definition of these is lacking and significant variability exists between observers for this irregularly-shaped bone. A 2D-3D shape analysis technique was developed to determine the optimal device configuration for contacting the patellar surface. Read More

View Article
October 2018
1 Read

Influence of loading rate and limb position on patellar tendon mechanical properties in vivo.

Clin Biomech (Bristol, Avon) 2018 Nov 10;61:52-57. Epub 2018 Nov 10.

Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Shimami-cho 1398, Kita-ku, Niigata City 950-3198, Japan.

Background: The aims of this study were to clarify the changes of patellar tendon length during isometric knee joint extension and the double leg squat position using ultrasonography.

Methods: The left legs of 17 healthy adults were investigated. Isometric knee extension motion was performed at three positions of knee flexion 30° (knee 30°), knee flexion 60° (knee 60°), knee flexion 90° (knee 90°), and at each limb position, 0% (0% peak torque (PT)), 40% (40% PT), 50% (50% PT), and 60% (60% PT) of the maximum knee joint extension torque were executed at random. Read More

View Article
November 2018
2 Reads

Preoperative planning of tibial tubercle medialisation according to the trochlear groove angle.

Orthop Traumatol Surg Res 2018 Nov 20. Epub 2018 Nov 20.

Service de chirurgie orthopédique et traumatologique, hôpital Henri-Mondor, 40, avenue de Mal-de-Lattre-de-Tassigny, 94000 Créteil, France.

The tibial tubercle-trochlear groove distance (TT-TG) was first described four decades ago. Since then, a considerable body of research has become available on the pathophysiology of chronic patellar instability, whose diagnosis and treatment remain challenging. Tibial tubercle medialisation can correct an abnormal TT-TG. Read More

View Article
November 2018
5 Reads

Limnological Characteristics and Rotifer Community Composition of Northern Mexico Chihuahuan Desert Springs.

J Arid Environ 2019 Jan 23;160:32-41. Epub 2018 Oct 23.

Department of Biological Sciences, University of Texas at El Paso, 500 West University Avenue, El Paso, Texas,79968, USA. ORCID 0000-0002-6719-6883.

Desert springs are critical for wildlife and human subsistence, but poorly studied. The springs in the northern Chihuahuan Desert region of Mexico are no exception. While groundwater overexploitation and other anthropogenic activities have endangered these waters, little is known about their water quality or biodiversity. Read More

View Article
January 2019
1 Read

The value of postoperative prosthesis alignment and patellar height measurements on standard X-rays after Total Knee Arthroplasty: Does it relate to knee function after 5 years?

Knee 2018 Nov 20. Epub 2018 Nov 20.

Spaarne Gasthuis, Department of Orthopaedic Surgery, Spaarnepoort 1, 2134AT Hoofddorp, the Netherlands.

Background: The purpose of this retrospective cohort study was to investigate the influence of parameters of malalignment on knee function 5 years post TKA and, additionally, to explore alterations in patellar height after TKA.

Methods: All 661 patients undergoing TKA between 2010 and 2011 were considered for inclusion. Preoperative and 1-year postoperative short-leg radiographs were assessed for malalignment parameters: coronal tibial angle (cTA), sagittal tibial angle (sTA), femoral flexion angle (FFA) and mediolateral tibial mismatch. Read More

View Article
November 2018

A new classification of injury patterns of the medial patellofemoral ligament after acute lateral patella dislocation detected using magnetic resonance imaging studies.

Injury 2018 Nov 13. Epub 2018 Nov 13.

Department of Magnetic Resonance, Renmin Hospital, Hubei University of Medicine, Shiyan, 442000, Hubei, PR China. Electronic address:

Introduction: Acute lateral patellar dislocation is a very common condition in orthopedics, especially among adolescents and physically active patients. To evaluate distinct medial patellofemoral ligament (MPFL) injury patterns and the associated knee pathology after acute lateral patellar dislocation (ALPD) using magnetic resonance imaging (MRI) studies, which is essential for the development of treatment protocols.

Materials And Methods: MRI images of 74 ALPD patients were taken between January 2015 to December 2016. Read More

View Article
November 2018
1 Read
2.137 Impact Factor

Short-Term Results of Hybrid Closed-Wedge High Tibial Osteotomy: A Case Series with a Minimum 3-Year Follow-up.

Knee Surg Relat Res 2018 Dec;30(4):293-302

Department of Orthopedic Surgery, Akita University Graduate School of Medicine, Akita, Japan.

Purpose: High tibial valgus osteotomy (HTO) is a well-established surgical procedure for patients with medial compartment osteoarthritis (OA) of the knee. The hybrid closed-wedge HTO (CWHTO) procedure permits extensive correction in patients with severe deformities or patellofemoral joint OA. The aim of this study was to report the short-term results in a consecutive series of patients treated with hybrid CWHTO. Read More

View Article
December 2018
8 Reads

Relationship between bone plug position and morphological changes of tunnel aperture in anatomic rectangular tunnel ACL reconstruction.

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

Faculty of Comprehensive Rehabilitation, Osaka Prefecture University, Habikino, Japan.

Purpose: In animal studies after ACL reconstruction (ACL-R) using the bone-patellar tendon-bone (BTB), the graft-healing pattern was found to depend on the relationship between bone plug and the tunnel wall. This difference of graft-healing pattern could influence the postoperative morphological changes of the tunnel. However, no study has assessed the relationship between bone plug position and the change of tunnel morphology. Read More

View Article
November 2018
4 Reads

The contribution of the medial retinaculum as a restraining factor to the patella dislocation.

Acta Orthop Belg 2018 Jun;84(2):179-183

The objective of this study was to evaluate the contribution of the medial retinaculum to the stability of the patella, for several angles of knee flexion. For six cadaveric knees, the patella and patella retinaculum were exposed, and the force required to dislocate the patella laterally by 5 mm was measured, in 0, 45 and 90 degrees of knee flexion, preserving and dissecting the medial retinaculum. Wilcoxon singed rank test (SPSS, version 23, Chicago, USA) was used for data analysis. Read More

View Article
June 2018
2 Reads

Does Patellar Tendon Repair With Gastrocnemius Flap Augmentation Effectively Restore Active Extension After Proximal Tibial Sarcoma Resection?

Clin Orthop Relat Res 2018 Nov 9. Epub 2018 Nov 9.

C. A. Cipriano, D. J. McDonald , Department of Orthopedic Surgery, Washington University, St Louis, MO, USA J. Dalton , School of Medicine, Washington University School of Medicine, St Louis, MO, USA.

Background: A rotational gastrocnemius flap is often used for soft tissue reconstruction after proximal tibia sarcoma resection. However, little is known about the frequency and severity of complications and the recovery of extensor function after this procedure.

Questions/purposes: After gastrocnemius flap reconstruction with split-thickness skin grafting (STSG) to augment the extensor mechanism repair after proximal tibial resection for sarcoma, we asked: (1) What ROM was achieved (including extensor lag and active flexion)? (2) How often did complications and reoperations occur and what caused them?

Methods: Between 1991 and 2014, one surgeon treated 26 patients with proximal tibial resections for primary bone sarcoma. Read More

View Article
November 2018

Intravenous magnesium sulphate infusion as first-line therapy in the control of spasms and muscular rigidity in childhood tetanus.

Paediatr Int Child Health 2018 Nov 21:1-7. Epub 2018 Nov 21.

c Department of Paediatrics , Lokmanya Tilak Municipal Medical College and General Hospital , Sion, Mumbai , India.

Background: Reports suggest that, in tetanus, magnesium sulphate (MgSO) alone may control muscle spasms, thereby avoiding sedation and mechanical ventilation.

Aim: To study the efficacy and safety of intravenous MgSO in controlling spasms and rigidity in children with tetanus.

Methods: All children with tetanus consecutively admitted over a 2-year period in a tertiary-care teaching hospital were recruited. Read More

View Article
November 2018
2 Reads

Surgical medial patellofemoral ligament reconstruction versus non-surgical treatment of acute primary patellar dislocation: a prospective controlled trial.

Int Orthop 2018 Nov 20. Epub 2018 Nov 20.

Department of Orthopedics, Third Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, China.

Purpose: The acute primary (first-time) lateral patellar dislocation is associated with a high rate of functional disability. There is no consensus as to the choice of surgical or non-surgical treatment for these patients. The aim of this study is to compare the clinical results between the surgical (reconstruction of the medial patellofemoral ligament [MPFL]) and non-surgical treatments for acute primary patellar dislocations. Read More

View Article
November 2018
12 Reads