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Department of Orthopaedic Surgery, Osaka University Medical School
Department of Orthopaedic Surgery, Osaka University Medical School
Department of Orthopaedic Sports Medicine, Osaka Rosai Hospital, Osaka, Japan
Department of Orthopaedic Surgery, Osaka University Medical School
Department of Orthopaedic Surgery, Osaka University Medical School
We evaluated 41 knees 24 to 48 months after anterior cruciate ligament reconstruction was performed using multiple autogenous semitendinosus tendons. The ip silateral free semitendinosus tendon was tripled or quadrupled to make a graft 7 to 10 mm in diameter and more than 60 mm long. When the diameter of the graft was less than 7 mm, an ipsilateral doubled gracilis tendon was also used (in seven cases). Twenty-three patients (56%) returned to their preinjury activity levels. According to the patients' subjective assessment, 34 (83%) graded themselves as normal or nearly normal. No patient reported giving way of the knee or limitation of knee motion. The average anterior laxity difference between the involved knee and contralateral uninjured knee was 1.5 mm at 200 N. Twenty-nine patients (71 %) demonstrated an anterior laxity difference of 3 mm or less when the involved knee was compared with the contralateral uninjured knee. Quadriceps muscle strength was 90% compared with the contralateral healthy limb, and hamstring muscle strength was equivalent to the contralateral limb. In our study, tripled or quadrupled semitendinosus free tendons were ex cellent anterior cruciate ligament grafts for restoring knee stability, recovering thigh muscle power, and pre serving knee motion.
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