Kato Yuki, Chavez Joverienne, Yamada Shin, Hattori Soichi, Takazawa Shuzo, Ohuchi Hiroshi
Department of Sports Medicine, Kameda Medical Center, Kamogawa, Japan.
Knee Surg Relat Res. 2019 Jun 1;31(2):113-119. doi: 10.5792/ksrr.18.048.
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.
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.
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.
The present study demonstrated that the protrusion of β-TCP that was used as a bone void filler had no adverse effects.
本研究旨在调查使用骨-髌腱-骨（BPTB）移植物进行前交叉韧带（ACL）重建，随后植入β-磷酸三钙（β-TCP）块作为骨缺损填充材料的患者的膝关节前部症状。
我们回顾性分析了84例在BPTB自体移植重建ACL时使用β-TCP块进行髌骨骨缺损人工骨移植的病例。术后立即对患膝进行计算机断层扫描，以评估移植的β-TCP块是否从髌骨前表面向前突出。根据结果，将病例分为突出组（n = 31）和非突出组（n = 53）。比较两组术后12个月时的膝关节前部症状和移植的β-TCP块的吸收情况。
除髌股关节摩擦音外，两组膝关节前部症状无显著差异（p>0.05）。突出组髌股关节摩擦音的发生率显著低于非突出组（p = 0.027）。两组在β-TCP吸收方面无显著差异。
本研究表明，用作骨缺损填充材料的β-TCP突出没有不良影响。
