We released the infraspinatus tendons of six sheep, allowed retraction of the musculotendinous unit over a period of 40 weeks and then performed a repair. We studied retraction of the musculotendinous unit 35 weeks later using CT, MRI and macroscopic dissection. The tendon was retracted by a mean of 4.7 cm (3.8 to 5.1) 40 weeks after release and remained at a mean of 4.2 cm (3.3 to 4.7) 35 week...

BACKGROUND Massage is often applied with the intention of improving flexibility or reducing stiffness in musculotendinous tissue. There is, however, a lack of supporting evidence that such mechanical effects occur. The purpose of the study was to investigate the effect of massage on the passive mechanical properties of the calf muscle complex. METHODS Twenty nine healthy volunteers aged betwe...

This study investigated the effects of passive warming on the biomechanical properties of the musculotendinous unit. Paired tibialis anterior (TA) and extensor digitorum longus (EDL) muscles in the rabbit hindlimb were passively heated to different temperatures and then subjected to controlled strain injury. The parameters examined were: 1) percent increase in length to failure, 2) force to fai...

BACKGROUND Musculotendinous retraction is a limiting factor for repair of long-standing rotator cuff tears. However, it is currently unknown to what extent the muscle and tendon contribute to the degree of total retraction. Further understanding of this may possibly influence the strategy of musculotendinous reconstruction. PURPOSE To analyze the contribution of muscle and tendon to the proce...

A traumatic avulsion of the flexor tendon at the musculotendinous junction in nonamputated digits is a very rare injury. We present a 14-year-old girl who sustained a longitudinal, tensile, injurious force directly to the flexor pollicis longus tendon after an open thenar injury resulting in its avulsion at the musculotendinous junction. In an effort to minimize soft-tissue damage and preserve ...

BACKGROUND Retraction, atrophy and fatty infiltration are signs subsequent to chronic rotator cuff tendon tears. They are associated with an increased pennation angle and a shortening of the muscle fibers in series. These deleterious changes of the muscular architecture are not reversible with current repair techniques and are the main factors for failed rotator cuff tendon repair. Whereas fast...

Background: Dog bite injuries to the upper extremity can result in traumatic neurovascular and musculotendinous damage. Currently, there are no clear guidelines dictating which patients may benefit from early operative exploration. The purpose of this study was to identify clinical variables that were predictive of abnormal intraoperative findings in patients who sustained an upper extremity do...

Abstract The groin and pelvis represent a large anatomical region with disorders affecting diverse array of osteoarticular, musculotendinous, gastrointestinal, genitourinary structures. Although it can be difficult to pinpoint pain generator clinically, patients often present non-specific orthopedic complaints at the anterior , lateral inferior or posterior aspect pelvis. purpose this practical...