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Sports Medicine West, Salt Lake City, Utah
Sports Medicine West, Salt Lake City, Utah
Sports Medicine West, Salt Lake City, Utah
Sports Medicine West, Salt Lake City, Utah
We evaluated extensor mechanism function in 10 pa tients after they had arthroscopically assisted ACL reconstruction using the central third of the patellar tendon. The patients were randomly selected 12 to 24 months after reconstruction. All had rehabilitation where range of motion was initiated within the 1 st postoperative week. All patients stated that they were satisfied and considered their knee to be stable. The KT-1000 maximum measurements (30 to 40 pounds) averaged an increase of 1.7 mm when compared with the opposite knee. Subjective complaints, such as an terior knee pain, grating, and weakness, were common and only 3 of 10 patients returned to all of their preinjury sports.
Persistent radiographic abnormalities were common. Physical examination and functional testing also re vealed persistent dysfunction of the extensor mecha nism in patients with radiographic abnormalities. Isoki netic testing at 60 deg/sec showed an average quad riceps deficit of 18% compared to the normal extremity. Axial computed tomography scans revealed significant decrease in quadriceps cross-sectional area. Magnetic resonance imaging and computed tomography con firmed persistent defects at the harvest site; there was significant anterior knee scar formation in these pa tients.
Despite achieving ligamentous stability, patients still experienced permanent weakness, functional deficits, patellar chondrosis, and pain after ACL reconstruction using the central one-third of the patellar tendon.
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