The American journal of sports medicine
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Comparative Study Clinical Trial
Arthroscopic soft tissue tenodesis versus bony fixation anchor tenodesis of the long head of the biceps tendon.
Currently there are no prospective data available that compare the different tenodesis techniques of the long head of the biceps tendon with regard to their clinical and structural results. ⋯ When arthroscopic tenodesis of the LHB is indicated, the authors recommend a bony fixation over soft tissue fixation because anchor fixation provides significant advantages concerning the clinical and structural outcome.
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Lesions of the biceps pulley and instability of the long head of the biceps tendon are common diagnoses in patients with anterior shoulder pain. ⋯ Pulley lesions are fairly common in patients undergoing arthroscopic surgery and were found in 32.4% of this prospective cohort (67 of 207). Current consensus indicates that pulley lesions are often associated with rotator cuff tears. This series also showed correlations with superior labral anterior posterior tears, biceps instability, and long head of the biceps tendon tears.
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Rotator cuff tendon heals by formation of an interposed zone of fibrovascular scar tissue. Recent studies demonstrate that transforming growth factor-beta 3 (TGF-β(3)) is associated with tissue regeneration and "scarless" healing, in contrast to scar-mediated healing that occurs with TGF-β(1). ⋯ The delivery of TGF-β(3) with an injectable Ca-P matrix at the supraspinatus tendon footprint has promise to improve healing after soft tissue repair.
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Comparative Study
Infections and patellar tendon ruptures after anterior cruciate ligament reconstruction: a comparison of ipsilateral and contralateral patellar tendon autografts.
No studies document the incidence or results of infections and patellar tendon ruptures after anterior cruciate ligament reconstruction with a contralateral patellar tendon autograft. ⋯ There were no significant differences in the incidence of infection or patellar tendon rupture between the ipsilateral and contralateral groups. Patients with complications after anterior cruciate ligament reconstruction with a patellar tendon autograft may have less difficulty obtaining full knee motion when the graft is harvested from the contralateral knee.
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Delayed onset of vastus medialis (VM) activity compared with vastus lateralis activity is a reported cause for patellofemoral pain. The delayed onset of VM activity in patellofemoral pain patients likely causes an imbalance in muscle forces and lateral maltracking of the patella; however, evidence relating VM activation delay to patellar maltracking is sparse. The aim of this study was to investigate the relationship between VM activation delay and patellar maltracking measures in pain-free controls and patellofemoral pain patients. ⋯ A clinical intervention such as VM retraining may be effective in only a subset of patellofemoral pain participants-namely, those with excessive tilt and excessive bisect offset measures. The results highlight the importance of appropriate classification of patellofemoral pain patients before selection of a clinical intervention.