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Traumatic knee joint dislocations are relatively rare. Most of knee dislocations are reduced by closed manipulation. However occasionally, especially in the case of soft tissue incarceration, closed reduction may not be possible and open reduction is mandatory. This report introduces a case of irreducible posterolateral rotary knee dislocation with interposition of vastus medialis treated through...
A concern that arises with any change in technique is whether it affects the long-term implant stability. The objective of this study was to evaluate the early migration, measured by radiostereometric analysis (RSA), and the functional outcome of the Triathlon™ cemented knee prosthesis, operated on with or without a tourniquet. During the last decades RSA has emerged as a way to assess prosthetic...
Patient specific guides (PSG) have been introduced as a tool in total knee arthroplasty (TKA) in an attempt to improve limb alignment and reduce operative time compared to other established surgical techniques. The purpose of this study was to compare the post-operative radiographic alignment and operative time in patients who underwent TKA surgery with PSG, conventional instrumentation or computer-assisted...
We present a case of an 8-year-old boy diagnosed with melorheostosis who was suffering from severe genu valgum, permanent dislocation of the patella, knee flexion contracture and leg length shortening. Soft tissue contracture of the limb and subsequent joint deformities were reported to represent clinical manifestations of pediatric melorheostosis. As the epiphyseal plate had not closed, patellar...
To measure and calculate the morphological parameters and determine the anatomical characteristics of the posterior surface of the proximal tibia in a healthy Chinese population.A total of 150 volunteers with normal knees were enrolled. The parameters in the multi-slice spiral computed tomography (MSCT) three-dimensional (3-D) reconstruction images were measured and calculated by two independent qualified...
The gold standard for measuring knee alignment is the lower limb mechanical axis (MA) using weight-bearing lower limb full-length x-ray (FLX). However, CT scanograms (CTS) are becoming increasingly popular in view of lower radiation exposure, speed of data acquisition and supine positioning. We compared the correlation and degree of agreement of knee joint coronal alignment using these two imaging...
Recent studies have demonstrated morbidity associated with elective knee arthroscopy. The objective of the current study was to quantify resource utilisation and costs associated with postoperative complications following an elective knee arthroscopy.We undertook a retrospective, longitudinal cohort study using routinely collected hospital data from Victorian public hospitals during the period from...
Patellofemoral pain (PFP) is a commonly presenting disorder of the lower limb, frequently effecting young physically active individuals particularly females. The condition has been associated with poor control of limb alignment while undertaking unilateral limb loading tasks. This poor alignment of the limb is believed to alter loading stress within the patellofemoral joint. This study aims to investigate...
Single-tunnel double-bundle (STDB) anterior cruciate ligament (ACL) reconstruction can restore biomechanical function and anatomic structure, but existing methods of graft fixation are not adequate. The aims of this study are to examine knee biomechanics after STDB reconstruction using a unique expandable interference screw for fixation.The biomechanical parameters of six pairs of human cadaveric...
Background: There are currently very few of studies which have evaluated the role of bariatric surgery in joint loadings and changes in gait. We wanted to examine how impulsive loading would change level and stair walking in severely or morbidly obese subjects after they had undergone bariatric surgery and weight loss. Methods: Thirteen female and three male adults aged between 30 and 63years, cleared...
We report an unusual case of disassembly of threaded junction between stem extension and femoral component in a 6-year-old total stabilizer revision total knee arthroplasty. Aseptic loosening of femur component will tend to cause increased stresses at the stem–condylar junction of a modular femoral prosthesis, especially if femur component is flexed. The modular junction may therefore be unable to...
The purpose of this study was to determine the optimal clinical and cost-effective strategy for managing people following ACL rupture.A systematic review of the published (AMED, CINAHL, MEDLINE, EMBASE, PubMed, psycINFO and the Cochrane Library) and unpublished literature (OpenGrey, the WHO International Clinical Trials Registry Platform, Current Controlled Trials and the UK National Research Register...
A case of recurrent hemarthrosis initially presenting after the fifth postoperative month is described. Because of recurrent pain and swelling, the patient underwent an arthroscopy 14months after total knee arthroplasty (TKA). A remnant posterior lateral meniscus was found to be impinged between the femoral component and the tibial liner, and there was oozing from the hypertrophied synovium around...
Fibular hemimelia exists as a rare cause of ACL insufficiency. This case report concerns the diagnosis and treatment of anterior cruciate ligament insufficiency in a teenage football player with fibular hemimelia. While ACL reconstruction has been described to allow activities of daily living in this patient population, this is the first report in the literature of anterior cruciate ligament reconstruction...
There is lack of well-designed trials evaluating structural benefits of non-pharmacologic therapies in knee osteoarthritis (OA). In this parallel-group randomized controlled trial, we aim to compare the possible advantages of lateral wedge insole and acupuncture in patients with medial knee OA.Patients with grade two or three of medial knee OA were randomly allocated to group one who received an in...
The association of patellar and trochlear anomalies resulting in isolated patellofemoral osteoarthritis has often been postulated but rarely studied. The purpose of this study was to examine the association of patellofemoral dysplasia, specifically trochlear anomalies, which are a cause for degenerative disease and may result in a worse outcome after arthroplasty for isolated patellofemoral arthritis...
Trochlear dysplasia is known as the primary predisposing factor for patellar dislocation. Current methods to describe trochlear dysplasia are mainly qualitative or based on a limited number of discrete measurements. The purpose of this study is to apply statistical shape analysis to take the full geometrical complexity of trochlear dysplasia into account.Statistical shape analysis was applied to 20...
Finding the right balance between tibial coverage and minimal implant overhang is an important factor in TKA. Another significant cause of failure is component malrotation.An average master shape of the proximal tibia at TKA resection level was calculated using fine slice computed tomographies of 117 cadaveric knees. To find out whether alternate implant contours would be necessary depending on the...
In clinical settings, where arthrometers are mainly used by different clinicians, knowing the inter-rater reliability of the instrument is crucial in order for the results from different examiners to be accurately interpreted and limitations fully understood. The aim of this study was to evaluate the inter-rater reliability of the GNRB® knee arthrometer.Knee anterior laxity in both knees was tested...
This prospective study aimed to evaluate radiographically, mechanical or hip–knee–ankle (HKA) axis in healthy, asymptomatic, Asian (Indian and Korean) adults between 20 and 40years of age to determine the incidence of inherent varus (mechanical limb alignment of >3° varus) and the factors influencing it.Three hundred and eighty-eight lower limbs were evaluated using full length, standing hip-to-ankle...
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