BACKGROUND AND AIMS The aim of this study was to assess the effects of risk-based multifactorial fall prevention program on maximal isometric strength in the community-dwelling aged. METHODS 591 subjects were randomized in two age groups (65-74 and > or = 75 yrs), intervention group (IG) (n=293) and control group (CG) (n=298). A 12-month program consisted of individual geriatric assessment, i...

A knee brace for medial knee osteoarthritis (OA) is required to restrict knee adduction moment (KAM), but must not restrict knee flexion during swing phase. There is no report of a knee brace with both functions. The purpose of this study is to investigate the effect of the custom-made hinged knee brace for patients with knee OA compared to the hinged knee brace generally used, and to assess th...

Stiff-knee gait is a common walking problem in cerebral palsy characterized by insufficient knee flexion during swing. To identify factors that may limit knee flexion in swing, it is necessary to understand how unimpaired subjects successfully coordinate muscles and passive dynamics (gravity and velocity-related forces) to accelerate the knee into flexion during double support, a critical phase...

The objective of this study was to examine the effects of patellar resurfacing on patellofemoral joint contact pressure and contact area in total knee arthroplasty. We tested seven fresh-frozen cadaveric knees using a custom knee jig which permits the simulation of physiologic quadriceps loading. Before patellar resurfacing, the mean peak contact pressure of medial and lateral patellofemoral jo...

BACKGROUND Clinicians use the single-leg hop test to assess readiness for return to sports after knee injury. Few studies have reported the results of single-leg hop testing after meniscectomy. Additionally, the contributions of impairments in quadriceps strength and psychosocial factors to single-leg hop performance are unknown. PURPOSE To compare single-leg hop performance (distance and lan...

Prolonged walking with knee joint contracture causes changes in the functioning of muscles lower leg and foot. Objective. To study foot conditions using a human model. Methods. The gait analysis was performed OpenSim 4.0 program. modeling based on gait2394 following were studied: m. peroneus brevis, longus, tertius, tibialis posterior, anterium, flexor digitorum hallucis extensor longus. Result...

The aim of the study was to investigate how kinematic and kinetic adjustments between level and slope locomotion of persons with transtibial amputation are related to their individual muscular and functional capacities. A quantified gait analysis was conducted on flat and slope surfaces for seven patients with transtibial amputation and a control group of eight subjects to obtain biomechanical ...

Objectives: To determine if immobilization of the knee at varying degrees of knee flexion will limit the surface electromygraphical (sEMG) activity of hamstring muscles during crutch-assisted ambulation. Methods: Ten healthy participants walked with crutches with the knee maintained at 0°, 30°, 60° and 90° of knee flexion, both with and without a brace. The leg was non-weight bearing for all tr...

A three-dimensional dynamic simulation of walking was used together with induced position analysis to determine how kinematic conditions at toe-off and muscle forces following toe-off affect peak knee flexion during the swing phase of normal gait. The flexion velocity of the swing-limb knee at toe-off contributed 30 degrees to the peak knee flexion angle; this was larger than any contribution f...