OBJECTIVES When re-operating patients with midportion Achilles tendinosis, having had a poor effect of ultrasound (US) and Doppler-guided scraping, the author found the involvement of the plantaris tendon to be a likely reason for the poor result. The aim of this study was to investigate the occurrence of a plantaris tendon in close relation to the Achilles tendon in consecutive patients with m...

PURPOSE Our purpose was to evaluate the results of transphyseal anterior cruciate ligament (ACL) reconstruction with medial hamstring autograft in skeletally immature patients. METHODS We reviewed the records of all skeletally immature patients who underwent transphyseal ACL reconstruction with medial hamstring autograft between 1988 and 2002 at our institution. Inclusion criteria were age le...

CONTEXT Coactivation ratio of quadriceps to hamstring muscles (Q:H) and medial to lateral knee muscles (M:L) contributes to the dynamic stability of the knee joint during movement patterns recommended during rehabilitation and important for daily function. OBJECTIVE To compare the quadriceps-to-hamstring and medial-to-lateral knee muscles' coactivation ratios between men and women during the ...

Background: Tendons heal by fibrotic repair, increasing the likelihood of reinjury. Animal tendon injury and overuse models have identified transforming growth factor beta (TGF-β) bone morphogenetic proteins (BMPs) as factors actively involved in development fibrosis, mediating extracellular matrix synthesis cell differentiation. Purpose: To understand how TGF-β BMPs contribute to processes usi...

Background. It is unclear whether the clinical use of tibial rotation to measure the strength of the medial hamstrings and lateral hamstrings in isolation is based on sound scientific evidence or is simply based on anatomical features. Objectives. To verify the appropriateness of tibial rotation for isolation of the medial hamstrings and lateral hamstrings, the participants performed neutral r...

Most overuse tendinopathies are thought to be associated with repeated microstrain below the failure threshold, analogous to the fatigue failure that affects materials placed under repetitive loading. Investigating the progression of fatigue damage within tendons is therefore of critical importance. There are obvious challenges associated with the sourcing of human tendon samples for in vitro a...

Tear of the anterior cruciate ligament (ACL) is the most common ligamentous injury of the knee. Reconstructing this ligament is often required to restore functional stability of the knee. Many graft options are available for ACL reconstruction, including different autograft and allograft tissues. Autografts include bone-patellar tendon-bone composites (PT), combined semitendinosus and gracilis ...

OBJECTIVE Initial reports have shown percutaneous sonographically guided needle tenotomy without corticosteroid injection to be effective for the treatment of tennis elbow. The purpose of this study was to determine the effectiveness of this procedure with various tendons throughout the body. METHODS Fourteen tendons in 13 patients were identified as having a greater than 6-month history of c...