BACKGROUND Because a proximal hamstring avulsion results in residual loss of function, surgical repair is recommended. Few studies have investigated postoperative function with validated outcomes. PURPOSE To examine lower extremity function after surgical repair of proximal hamstring avulsions using validated self-reported and performance-based functional outcomes. STUDY DESIGN Case series;...

Hamstring strain injuries are common within professional footballers with high-speed running (HSR) being known to increase the likelihood of sustaining a hamstring injury. This study aimed assess acute: chronic workload ratio (ACWR) HSR that preceded in footballers. Global positioning system (GPS)-derived distances and weekly ACWR were obtained from 18 one English Football League (EFL) club dur...

Abstract Background Hemiplegic cerebral palsy (CP) enormously affects the quadriceps and hamstring muscles. It causes weakness in affected lower-extremity muscles addition to muscle imbalance inadequate power production, especially ankle plantar-flexor knee extensor also anomalous delayed myoelectrical action of medial hamstring. A whole-body vibration (WBV) exercise can diminish spasticity imp...

OBJECTIVE The purpose of this study was to compare the electromyographic (EMG) activity of gluteal and thigh muscles of sportspeople with a recent hamstring injury with uninjured controls during a weight-bearing task. STUDY DESIGN Cross-sectional. SETTING University laboratory. PARTICIPANTS 16 participants with a hamstring injury (hamstring-injured group, HG) and 18 control participants (...

[Purpose] The aim of this study was to compare hamstring-to-quadriceps ratio between the accelerating and decelerating sections for anterior cruciate ligament protection during squat exercise. [Subjects and Methods] Nine asymptomatic males were enrolled in this study. The hamstring (medial part) and quadriceps (rectus femoris) muscle activities during squat exercise were measured, and the squat...

Eighteen children with hemiplegia, mean age 8 years 5 months, underwent gait analysis and musculoskeletal modelling using specially designed software. The maximum lengths of the hamstrings were determined for each child walking in and out of an ankle-foot orthosis (AFO). The muscles were deemed to be short if shorter than the normal average -1SD. In bare feet 8 participants had short medial ham...

BACKGROUND To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI). METHODS A case series of 104 primary anatomic single-bundle ACL reconstructions using hamstring autograft was retrospectively reviewed. Pre- a...

BACKGROUND Hamstring tendon grafts may have an unacceptable size for use in anterior cruciate ligament (ACL) reconstruction. Magnetic resonance imaging (MRI) has been proposed to predict the diameters of hamstring tendon grafts. HYPOTHESIS Preoperative ultrasonography (US) might reliably anticipate intraoperative 4-strand semitendinosus and gracilis tendon (4ST-GT) graft sizes similarly to MR...