BACKGROUND The association between knee alignment and knee pain in knee osteoarthritis (OA) is unclear. High tibial osteotomy, a treatment option in knee OA, alters load from the affected to the unaffected compartment of the knee by correcting malalignment. This surgical procedure thus offers the possibility to study the cross-sectional and longitudinal association of alignment to pain. The aim...

BACKGROUND AND PURPOSE Recent research on outcomes after total knee arthroplasty (TKA) has raised the question of the ability of traditional outcome measures to distinguish between treatments. We compared functional outcomes in patients undergoing TKA with and without patellar resurfacing, using the knee injury and osteoarthritis outcome score (KOOS) as the primary outcome and 3 traditional out...

BACKGROUND Self-reported knee complaints may vary with age and gender. Reference data from the adult population would help to better interpret the outcome of interventions due to knee complaints. The objectives of the present study were to describe the variation of self-reported knee pain, function and quality of life with age and gender in the adult population and to establish population-based...

Guidelines for a comprehensive rehabilitation programme patellofemoral pain (PFP) have been developed by international experts. The aim of this study was to analyse the effect such rehabilitative exercise on pain, function, kinesiophobia, running biomechanics, quadriceps strength and muscle inhibition in individuals with PFP. Observational study. Clinical environment. Twenty-seven participants ...

Purpose  The purpose of this study was to determine the safety efficacy and outcomes of platelet-rich plasma (PRP) intra-articular injections for early stages of knee osteoarthritis (OA). Methods  Twenty-five patients affected by grade I and II knee primary OA according to the Kellgren-Lawrence scale received a single intra-articular PRP injection. Patients were prospectively evaluated for 6 mo...

BACKGROUND Segmental tissue loss in the lateral meniscus is associated with pain and increased risk of osteoarthritis even when indications have been carefully considered. HYPOTHESIS Repairing the defect using a novel biodegradable scaffold will reduce pain and restore the knee function. METHODS In this prospective multicenter study, a total of 54 patients (37 males/17 females; mean age: 28...

In young patients with medial knee osteoarthritis (OA), surgical intervention may not be desirable due to preferences to avoid bone cutting procedures, return to high activity levels, and prolong implant survival. The Atlas Knee System was designed to fill the gap between ineffective conservative treatments and invasive surgery. This single-arm study included 26 patients, aged 25 to 65 years, w...

BACKGROUND AND PURPOSE 10-year survival rates after unicompartmental knee replacement (UKR) have been up to 97% in single-center studies, but they have been as low as 80% in studies from arthroplasty registers. Few studies have evaluated short-term functional outcome and its improvement with time. We determined the time course of functional outcome as evaluated by the knee injury and osteoarthr...

Knee injury and Osteoarthritis Outcome Score (KOOS) is an instrument used to quantify patients' perceptions about their knee condition and associated problems. It is administered as a 42-item closed-ended questionnaire in which patients are asked to self-assess five outcomes: pain, other symptoms, activities of daily living, sport and recreation activities, and quality of life. We developed KLO...