Knee Surg Relat Res.
2019 Jun;31(2):113-119. 10.5792/ksrr.18.048.
Beta-Tricalcium Phosphate Block for Donor Site Morbidity of the Patella in Anterior Cruciate Ligament Reconstruction Using Bone-Patellar Tendon-Bone Graft
- Affiliations
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- 1Department of Sports Medicine, Kameda Medical Center, Kamogawa, Japan. kato.yuki.0@kameda.jp
- KMID: 2451845
- DOI: http://doi.org/10.5792/ksrr.18.048
Abstract
- PURPOSE
This study aimed to investigate anterior knee symptoms in patients who underwent anterior cruciate ligament (ACL) reconstruction using bone-patellar tendon-bone (BPTB) graft followed by implantation of a beta-tricalcium phosphate (β-TCP) block as a bone void filler.
MATERIALS AND METHODS
We retrospectively reviewed 84 cases of synthetic bone grafting using a β-TCP block for the patellar bone defect in ACL reconstruction with a BPTB autograft. Computed tomography of the operated knee was performed immediately after the surgery to evaluate whether the grafted β-TCP block protruded forward from the anterior surface of the patella. On the basis of the results, the cases were divided into a protrusion group (n=31) and a non-protrusion group (n=53). Anterior knee symptoms at 12 months postoperatively and absorption of the grafted β-TCP block were compared between the two groups.
RESULTS
Except for patellofemoral crepitus, there was no significant difference in anterior knee symptoms between the two groups (p>0.05). The incidence of patellofemoral crepitus was significantly lower in the protrusion group than in the non-protrusion group (p=0.027). The groups showed no significant difference in β-TCP absorption.
CONCLUSIONS
The present study demonstrated that the protrusion of β-TCP that was used as a bone void filler had no adverse effects.
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