Hirotaka Mutsuzaki1, Tomonori Kinugasa2, Kotaro Ikeda2, Masataka Sakane3. 1. Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami Ami-machi, Inashiki-gun, Ibaraki, 300-0394, Japan. mutsuzaki@ipu.ac.jp. 2. Department of Orthopaedic Surgery, Ichihara Hospital, 3681 Oozone, Tsukuba, Ibaraki, 300-3295, Japan. 3. Department of Orthopaedic Surgery, Tsukuba Gakuen Hospital, 2573-1 Kamiyokoba, Tsukuba, Ibaraki, 305-0854, Japan.
Abstract
PURPOSE: This study aimed to clarify the effect of calcium phosphate (CaP)-hybridized tendon grafting versus unhybridized tendon grafting on the morphological changes to the bone tunnels at the aperture 1 year after anatomic single-bundle anterior cruciate ligament (ACL) reconstruction. METHODS:Seventy-three patients were randomized to undergo the CaP (n = 37) or the conventional method (n = 36). All patients underwentcomputed tomography (CT) evaluation 1 week and 1 year post-operatively. The femoral and tibial tunnels at the aperture were evaluated on reconstructed 3D CT images. Changes in the cross-sectional area (CSA) and diameters of the femur and the tibia, and the translation rate of the tunnel walls and the morphological changes of both tunnels were assessed. RESULTS: There was a significant reduction in the increase in the CSA and the anterior-posterior and proximal-distaltunnel diameters on the femoral side in the CaP group as compared with the conventional group. On the femoral side, the translation rate of the posterior wall was significantly larger in the CaP group than in the conventional group, whereas the translation rate of the distal wall was significantly smaller in the CaP group than in the conventional group. CONCLUSIONS: As compared with the conventional method, the CaP-hybridized tendon graft reduced bone tunnel enlargement on the femoral side 1 year after anatomic single-bundle ACL reconstruction due to an anterior shift of the posterior wall and reduced distal shift in the femoral bone tunnel. Clinically, the CaP-hybridized tendon grafts can prevent femoral bone tunnel enlargement in anatomic single-bundle ACL reconstruction. LEVEL OF EVIDENCE: I.
RCT Entities:
PURPOSE: This study aimed to clarify the effect of calcium phosphate (CaP)-hybridized tendon grafting versus unhybridized tendon grafting on the morphological changes to the bone tunnels at the aperture 1 year after anatomic single-bundle anterior cruciate ligament (ACL) reconstruction. METHODS: Seventy-three patients were randomized to undergo the CaP (n = 37) or the conventional method (n = 36). All patients underwent computed tomography (CT) evaluation 1 week and 1 year post-operatively. The femoral and tibial tunnels at the aperture were evaluated on reconstructed 3D CT images. Changes in the cross-sectional area (CSA) and diameters of the femur and the tibia, and the translation rate of the tunnel walls and the morphological changes of both tunnels were assessed. RESULTS: There was a significant reduction in the increase in the CSA and the anterior-posterior and proximal-distal tunnel diameters on the femoral side in the CaP group as compared with the conventional group. On the femoral side, the translation rate of the posterior wall was significantly larger in the CaP group than in the conventional group, whereas the translation rate of the distal wall was significantly smaller in the CaP group than in the conventional group. CONCLUSIONS: As compared with the conventional method, the CaP-hybridized tendon graft reduced bone tunnel enlargement on the femoral side 1 year after anatomic single-bundle ACL reconstruction due to an anterior shift of the posterior wall and reduced distal shift in the femoral bone tunnel. Clinically, the CaP-hybridized tendon grafts can prevent femoral bone tunnel enlargement in anatomic single-bundle ACL reconstruction. LEVEL OF EVIDENCE: I.
Authors: Sebastian Kopf; Brian Forsythe; Andrew K Wong; Scott Tashman; William Anderst; James J Irrgang; Freddie H Fu Journal: J Bone Joint Surg Am Date: 2010-06 Impact factor: 5.284
Authors: Scott A Rodeo; Sumito Kawamura; C Benjamin Ma; Xiang-hua Deng; Patrick S Sussman; Peyton Hays; Liang Ying Journal: J Bone Joint Surg Am Date: 2007-10 Impact factor: 5.284