[Histological findings for human tibial bone-tendon healing after hamstring transplantation. Investigation of tibial insertion after reconstruction of anterior cruciate ligaments with hamstring transplantation near joint fixation using bioresorbable interference screws]. / Histologische Befunde der humanen tibialen Knochen-Sehnen-Heilung bei Hamstringtransplantaten. Untersuchung der tibialen Insertion nach Rekonstruktion des vorderen Kreuzbandes mit Hamstringtransplantaten nach gelenknaher Fixation durch biodegradable Interferenzschrauben.

Ruptures of hamstring reconstructed anterior cruciate ligaments required additional surgery in five cases over a 4 year period. All transplants were primarily fixed with bioresorbable interference screws close to the joint. The average age was 31 years (range: 18-42), the average interval between primary surgery and rupture of the transplant was 13.2 months (range: 8-24) after an adequate re-trauma. After complete removal of the tibial insertion, a histological investigation was carried out. We stained the tissue-sections following the haematoxylin-eosin, Masson-Goldner and van Gieson protocols. All cases revealed direct healing with grow-over Sharpey-like fibers close to the joint, corresponding to a fibrous tendon insertion and far from the joint the formation of fibrous or cartilage callus.