Introduction: Pigmented villonodular synovitis (PVNS) after replacement arthroplasty is a potential cause of postoperative pain and hemarthrosis. The disease is difficult to diagnose after arthroplasty, since magnetic resonance imaging (MRI) appearances are subject to metal artifact making them less than ideal. Case Report: A case of a 61­year­old woman with PVNS after unicompartmental knee art...

Despite the excellent success rates of the modern unicompartmental knee arthroplasty (UKA), results of knee replacement registries still shows a relatively high revision and failure rate for UKA, especially when compared with traditional total knee arthroplasty (TKA). Bearing dislocation continues to be advocated as the predominant mechanism of failure in mobile UKA, whereas polyethylene wear a...

BACKGROUND AND PURPOSE There has recently been interest in the advantages of minimally invasive surgery (MIS) over conventional surgery, and on local infiltration analgesia (LIA) during knee arthroplasty. In this randomized controlled trial, we investigated whether MIS would result in earlier home-readiness and reduced postoperative pain compared to conventional unicompartmental knee arthroplas...

Unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA) and high tibial osteotomy (HTO) may all be used to treat unicompartmental osteoarthritis, but they are often used for different patient groups. However, there is considerable overlap in indications for all three options. The aim of this review was to assess the safety and efficacy of UKA compared with TKA and HTO in unicomp...

BACKGROUND AND PURPOSE The number of national arthroplasty registries is increasing. However, the methods of registration, classification, and analysis often differ. METHODS We combined data from 3 Nordic knee arthroplasty registers, comparing demographics, methods, and overall results. Primary arthroplasties during the period 1997-2007 were included. Each register produced a dataset of prede...

BACKGROUND The management of degenerative arthritis of the knee in the younger, active patient presents a challenge to the orthopaedic surgeon. Surgical treatment options include high tibial osteotomy (HTO), unicompartmental knee arthroplasty, and total knee arthroplasty. PURPOSE To examine the long-term survival of closing wedge HTO in a large series of patients up to 19 years after surgery....

Unicompartmental knee arthroplasty (UKA) has a more than 30-year history in the treatment of arthritis of one compartment of the tibiofemoral joint. Despite early negative reports, the procedure has evolved into are liable and safe treatment. Successful outcomes withUKA require proper patient selection, meticulous surgical technique, and avoidance of deformity overcorrection.This procedure is i...