The American journal of sports medicine
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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.