A randomised controlled trial was performed to compare the clinical outcome for the two commonest types of anterior cruciate ligament (ACL) reconstruction. Methods: Patients undergoing elective anterior cruciate reconstruction were randomised into one of two groups. Group PT underwent reconstruction using a patella tendon autograft (n=14), whereas Group SG had a semitendinosus/gracilis autograft (n=18). The same surgeon performed all operations. IKDC self reported function and activity scores were recorded pre-operatively and at one and five years post operation. KT1000 values and muscle strength were recorded pre-operatively and one year post operation. Results: No significant difference between groups was found for any measurement at one year despite adequate study power. At five year follow up patients in the PT group had superior scores in every category of the IKDC self reported function score (mean IKDC score for PT group = 83, mean IKDC score for SG = 75). The activities of squatting and kneeling revealed the greatest difference between groups. It was found that 71% of patients in the PT group achieved IKDC scores of 80 or over whereas only 61% of patients in the SG group achieved 1 KDC scores of 80 or over.
