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Department of Orthopaedics, Norra Älvsborg/Uddevalla Hospital, Uddevalla, Sweden
a Department of Diagnostic Radiology, Norra Älvsborg/Uddevalla Hospital, Uddevalla, Sweden
Department of Orthopaedics, Huddinge Hospital, Karolinska Institutet, Stockholm, Sweden
|| Department of Pathology, Huddinge Hospital, Karolinska Institutet, Stockholm, Sweden
b Department of Orthopaedics, Sahlgrenska University Hospital, Göteborg, Sweden
Presented at the annual meeting of the Orthopaedic Research Society, Anaheim, California, February 1999.
Address correspondence and reprint requests to Jüri Kartus, MD, PhD, Department of Orthopaedics, Norra Älvsborg/Uddevalla Hospital, SE-461 85 Trollhättan, Sweden
Nineteen consecutive patients undergoing anterior cruciate ligament reconstruction using the central third of the ipsilateral patellar tendon were included in the study. Serial magnetic resonance images revealed that the donor-site gap in the tendon decreased with time (mean follow-up, 26 months). The thickness was significantly increased compared with the intact contralateral patellar tendon, regardless of when the magnetic resonance imaging was performed. Ultrasonography showed the same findings at a mean follow-up of 26 months. Histologic evaluation of the repair tissue in the central part of the tendon, as well as the tissue in the peripheral part of the patellar tendon at the donor site, revealed a significant increase in cellularity and vascularity as compared with normal control tendons. Thus, 2 years after the harvesting procedure, the patellar tendon displayed significant radiographic and histologic abnormalities. On the basis of these findings, reharvest of the patellar tendon, at least up to 2 years after primary harvest, cannot be recommended.
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