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  • Title: The architecture of the ipsilateral quadriceps two years after successful anterior cruciate ligament reconstruction with bone-patellar tendon-bone autograft.
    Author: Longo UG, Rizzello G, Frnaceschi F, Campi S, Maffulli N, Denaro V.
    Journal: Knee; 2014 Jun; 21(3):721-5. PubMed ID: 24636309.
    Abstract:
    BACKGROUND: We undertook a cross-sectional study to evaluate the pennation angle and muscle thickness of the vastus lateralis muscle in patients undergoing unilateral anterior cruciate ligament (ACL) reconstruction with bone-patellar tendon-bone autograft, and compared these values with the contralateral non-operated limb. METHODS: Twenty three consecutive athletic males who underwent ACL reconstruction using the central third of the patellar ligament were evaluated at 25.9±1.5 months. The International Knee Documentation Committee (IKDC) score was administered, and angles of pennation and muscle thickness were measured by ultrasonography. RESULTS: There was no significant difference in the pennation angle of the operated leg comparing to the contralateral leg (12.5°±1.81° in the operated leg; 13.25°±2.40° after the test; p=0.117). Quadriceps thickness in the operated leg was significantly decreased in all subjects compared to the contralateral leg (28.4±5.3mm in the operated leg; 32.7±4.85 mm in the contralateral leg; p=0.007). CONCLUSIONS: Two years after surgery, there is no difference in pennation angle of the vastus lateralis when compared to the contralateral side in patients undergoing unilateral ACL reconstruction with bone-patellar tendon-bone autograft. There is a significant difference in quadriceps muscle thickness, which was less in the operated side on the operated side in all patients. Further studies are required to study the influence of muscle architecture on clinical outcome after ACL reconstruction surgery, and whether there are differences associated with the use of different grafts. LEVEL OF EVIDENCE: Case-control study; level IV.
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