INTRODUCTION/PURPOSE Decreased lumbo-pelvic (or core) stability has been suggested to contribute to the etiology of lower extremity injuries, particularly in females. This prospective study compares core stability measures between genders and between athletes who reported an injury during their season versus those who did not. Finally, we looked for one or a combination of these strength measur...

BACKGROUND Impaired balance, loss of mobility and falls are major problems associated with changes in muscle in older adults. However, the extent to which muscle composition and related performance measures for different lower limb muscles are associated with falls in older individuals is unclear. This study evaluated lower limb muscle attenuation, intramuscular adipose tissue (IMAT) infiltrati...

Hip spasticity and strength from 44 children with cerebral palsy (CP) and 44 children with able bodies (AB) were compared. For spasticity, a KinCom dynamometer abducted the passive hip at 4 different speeds and recorded the resistive adductor torques. Work values for the torque-angle data were calculated at each speed. Linear regression derived the slope for the line of best fit for the work-ve...

Imwalle, LE, Myer, GD, Ford, KR, and Hewett, TE, Relationship between hip and knee kinematics in athletic women during cutting maneuvers: a possible link to noncontact anterior cruciate ligament injury and prevention. J Strength Cond Res 23(8): 2223–2230, 2009—The purposes of this study were to compare lower-extremity kinematics during a 45 and 90 cutting maneuver and to examine the relationshi...

T he Hip-Abduction, KneeExtension Orthosis (HA, KE) is designed to aid in preventing or correcting deformities in spastic hip abductor and hamstring muscles when stretching and exercise do not suffice. Spasticity in this group of muscles is not uncommon in paraplegia or in other selected diseases of the central nervous system-for example, in multiple sclerosis. The orthosis consists of bila ter...

BACKGROUND Pelvis and trunk motions during baseball pitching are associated with ball velocity. Thus, limits in hip flexibility may adversely affect pitching biomechanics and the ability to generate ball velocity. HYPOTHESES Professional baseball pitchers will have less passive range of motion in the nondominant hip and the measured ranges of motion of both the nondominant and dominant hips w...

Introduction Physical activity is a proposed factor int the development of hip pathologies in male and female. The main objectives this study were to investigate influence gender on isometric muscle strength, range motion gluteus medius thickness at rest, during contraction onset activation. Material methods A cross-sectional was carried out. Hip motion, strength (B-Mode) activation (M-Mode) me...

A 6-year-old boy presented with the recent development of a right sided limp. He had no known medical conditions. On examination, the patient had limited internal/external rotation and abduction of the right hip. He walked with a non-antalgic gait and was noted to have a positive Trendelenberg sign. Lower extremity radiographs (A) revealed flattening of the right proximal femoral epiphysis with...