Serino Joseph, Murray Ryan, Argintar Evan H
Orthopedics. 2017 Jul 1;40(4):e617-e622. doi: 10.3928/01477447-20170418-02. Epub 2017 Apr 24.
This study was conducted to evaluate whether preoperative magnetic resonance imaging (MRI) measurements of the cross-sectional area and length of the semitendinosus tendon correlated with graft diameter. The goal of the study was to identify tendons at risk for requiring graft augmentation. The records of 140 consecutive patients undergoing anterior cruciate ligament (ACL) reconstruction between 2013 and 2016 were examined retrospectively. The study included 39 patients who underwent all-inside ACL reconstruction with a semitendinosus autograft. A single researcher used preoperative MRI scans to measure the cross-sectional area and length of the semitendinosus tendon. Graft cross-sectional area was correlated with semitendinosus tendon cross-sectional area with Pear-son's coefficients of 0.50 (95% confidence interval [CI], 0.21-0.70; P=.0013) and 0.59 (95% CI, 0.34-0.76; P=.0001) when measured under 2× and 4× magnification, respectively. In addition, MRI measurements of semitendinosus tendon length were correlated with both intraoperatively measured tendon length (r=0.75; 95% CI, 0.40-0.91; P=.0008) and graft diameter (r=0.43; 95% CI, 0.14-0.66; P=.0058). Average semitendinosus tendon cross-sectional area was 3.10 mm (95% CI, 0.53-5.67; P=.024) greater and semitendinosus tendon length was 14.05 mm (95% CI, 1.25-26.85; P=.035) greater in cases that did not require graft augmentation. Semitendinosus tendons with cross-sectional area of less than 13.2 mm or length of less than 81 mm are most likely to require graft augmentation. In addition, MRI measurements of the length and cross-sectional area of the semitendinosus tendon are significantly correlated with ACL graft diameter and could help to identify patients who may require graft augmentation. [Orthopedics. 2017; 40(4):e617-e622.].
本研究旨在评估术前磁共振成像（MRI）测量的半腱肌肌腱横截面积和长度是否与移植物直径相关。该研究的目的是识别有需要增加移植物风险的肌腱。回顾性检查了2013年至2016年间连续140例行前交叉韧带（ACL）重建患者的记录。该研究纳入了39例行全关节镜下ACL重建并使用半腱肌自体移植物的患者。由一名研究人员使用术前MRI扫描测量半腱肌肌腱的横截面积和长度。当分别在2倍和4倍放大倍数下测量时，移植物横截面积与半腱肌肌腱横截面积的Pearson系数分别为0.50（95%置信区间[CI]，0.21 - 0.70；P = 0.0013）和0.59（95%CI，0.34 - 0.76；P = 0.0001）。此外，MRI测量的半腱肌肌腱长度与术中测量的肌腱长度（r = 0.75；95%CI，0.40 - 0.91；P = 0.0008）和移植物直径（r = 0.43；95%CI，0.14 - 0.66；P = 0.0058）均相关。在不需要增加移植物的病例中，平均半腱肌肌腱横截面积大3.10 mm（95%CI，0.53 - 5.67；P = 0.024），半腱肌肌腱长度长14.05 mm（95%CI，1.25 - 26.85；P = 0.035）。横截面积小于13.2 mm或长度小于81 mm的半腱肌肌腱最有可能需要增加移植物。此外，MRI测量的半腱肌肌腱长度和横截面积与ACL移植物直径显著相关，有助于识别可能需要增加移植物 的患者。[《骨科》。2017；40(4):e617 - e622。]
