CONTEXT There is limited information about the effects of increasing load while squatting. OBJECTIVE To quantify tibiofemoral joint kinetics during squatting with variable loads. SETTING Research laboratory. PARTICIPANTS 20 male students. INTERVENTION Tibiofemoral joint kinetics and electromyographic (EMG) activity of four involved muscles were determined by recording the half squat wit...

OBJECTIVE To use forward dynamic simulations of forward and backward pedaling in order to determine whether backward pedaling offers theoretical advantages over forward pedaling to rehabilitate common knee disorders.DESIGN. A comparison of knee joint loads was performed during forward and backward pedaling.BACKGROUND. Pedaling has been shown to be an effective rehabilitation exercise for a vari...

BACKGROUND To compare the results of two different ways of distal femoral osteotomy stabilization in patients suffering from genuvalgum: internal fixation with plate, and casting. METHODS In a non-randomized prospective study, after distal femoral osteotomy with the zigzag method, patients were divided into two groups: long leg casting, and internal fixation with blade plate. For all patients...

OBJECTIVES The aim of this study was to explore the contribution of biomechanical factors to the development and progression of knee osteoarthritis (OA) by investigating whether the offspring of subjects with medial tibiomfemoral OA demonstrate gait abnormalities in the absence of OA. METHODS Three-dimensional gait analyses were performed on 9 offspring of people with medial tibiofemoral OA a...

OBJECTIVES Cartilage displacement and strain patterns were documented noninvasively in intact tibiofemoral joints in situ by magnetic resonance imaging (MRI). This study determined the number of compressive loading cycles required to precondition intact joints prior to imaging, the spatial distribution of displacements and strains in cartilage using displacement-encoded MRI, and the depth-depen...

Understanding of tibiofemoral joint mechanics at multiple spatial scales is essential for developing effective preventive measures and treatments for both pathology and injury management. Currently, there is a distinct lack of specimen-specific biomechanical data at multiple spatial scales, e.g., joint, tissue, and cell scales. Comprehensive multiscale data may improve the understanding of the ...

Previous research has shown that an increase in hamstring activation may compensate for anterior tibial transalation (ATT) in patients with anterior cruciate ligament deficient knee (ACLd); however, the effects of this compensation still remain unclear. The goals of this study were to quantify the activation of the hamstring muscles needed to compensate the ATT in ACLd knee during the complete ...

Objective: To ascertain whether spiking of the tibial tubercles is associated with cartilage defects as detected by magnetic resonance imaging (MRI) in osteoarthritis (OA) of the knee joint patients. Methodology: The study was performed on 76 knees of 47 patients with symptomatic tibiofemoral joint (TFJ) OA and 31 apparently normal knees of 16 volunteers as a control group. Angulation of the ti...