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Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
A prospective randomized study of anterior cruciate ligament reconstruction: a comparison of patellar tendon and quadruple-strand semitendinosus/gracilis tendons fixed with bioabsorbable interference screws.
American Journal of Sports Medicine 2007 March
BACKGROUND: Debate exists regarding the optimal graft for anterior cruciate ligament reconstruction. Few studies have compared the differences in outcome after reconstruction using similar fixation methods.
HYPOTHESIS: Similar outcomes will be seen after anterior cruciate ligament reconstruction with bone-patellar tendon-bone or quadruple-strand semitendinosus/gracilis tendons fixed with bioabsorbable interference screws.
STUDY DESIGN: Randomized controlled trial; Level of evidence, 1.
METHODS: Ninety-nine patients were prospectively randomized to bone-patellar tendon-bone (46 patients) or quadruple-strand semitendinosus/gracilis (53 patients) reconstruction groups. The bone-patellar tendon-bone group had slightly lower preinjury Tegner scores (6.7 vs 7.1, P = .03); otherwise, the groups were similar. All surgeries were performed by a single surgeon using an endoscopic technique with bioabsorbable interference screw fixation. Patients were evaluated at 3, 6, 12, and 24 months.
RESULTS: Forty-six bone-patellar tendon-bone and 50 quadruple-strand semitendinosus/gracilis patients were available at 24 months (97%). No differences in International Knee Documentation Committee grade, Lysholm score, Tegner activity level, range of motion, single-legged hop test, KT-1000 arthrometer manual maximum difference, Short Form-36, or patient knee rating were found. The bone-patellar tendon-bone group had better flexion strength in the operated leg than in the nonoperated leg (102% vs 90%, P = .0001), fewer patients complaining of difficulty jumping (3% vs 17%, P = .03), and a greater number of patients returning to preinjury Tegner level (51% vs 26%, P = .01). The quadruple-strand semitendinosus/gracilis group had better extension strength in the operated leg than in the nonoperated leg (92% vs 85%, P = .04), fewer patients with sensory deficits (14% vs 83%, P = .0001), and fewer patients with difficulty kneeling (6% vs 20%, P = .04). Both groups showed significant improvement in KT-1000 arthrometer manual maximum difference, Lysholm score, Tegner activity level, International Knee Documentation Committee grade, and patient knee rating score.
CONCLUSIONS: Good outcomes were seen in both the bone-patellar tendon-bone and quadruple-strand semitendinosus/gracilis groups. Subtle differences were noted between the groups, which may help guide optimal graft choice.
HYPOTHESIS: Similar outcomes will be seen after anterior cruciate ligament reconstruction with bone-patellar tendon-bone or quadruple-strand semitendinosus/gracilis tendons fixed with bioabsorbable interference screws.
STUDY DESIGN: Randomized controlled trial; Level of evidence, 1.
METHODS: Ninety-nine patients were prospectively randomized to bone-patellar tendon-bone (46 patients) or quadruple-strand semitendinosus/gracilis (53 patients) reconstruction groups. The bone-patellar tendon-bone group had slightly lower preinjury Tegner scores (6.7 vs 7.1, P = .03); otherwise, the groups were similar. All surgeries were performed by a single surgeon using an endoscopic technique with bioabsorbable interference screw fixation. Patients were evaluated at 3, 6, 12, and 24 months.
RESULTS: Forty-six bone-patellar tendon-bone and 50 quadruple-strand semitendinosus/gracilis patients were available at 24 months (97%). No differences in International Knee Documentation Committee grade, Lysholm score, Tegner activity level, range of motion, single-legged hop test, KT-1000 arthrometer manual maximum difference, Short Form-36, or patient knee rating were found. The bone-patellar tendon-bone group had better flexion strength in the operated leg than in the nonoperated leg (102% vs 90%, P = .0001), fewer patients complaining of difficulty jumping (3% vs 17%, P = .03), and a greater number of patients returning to preinjury Tegner level (51% vs 26%, P = .01). The quadruple-strand semitendinosus/gracilis group had better extension strength in the operated leg than in the nonoperated leg (92% vs 85%, P = .04), fewer patients with sensory deficits (14% vs 83%, P = .0001), and fewer patients with difficulty kneeling (6% vs 20%, P = .04). Both groups showed significant improvement in KT-1000 arthrometer manual maximum difference, Lysholm score, Tegner activity level, International Knee Documentation Committee grade, and patient knee rating score.
CONCLUSIONS: Good outcomes were seen in both the bone-patellar tendon-bone and quadruple-strand semitendinosus/gracilis groups. Subtle differences were noted between the groups, which may help guide optimal graft choice.
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