股直肌腱移植物用于ACL重建：基于前瞻性病例系列的预测性人体测量学与手术要点
简介
本研究基于211例多中心前瞻性病例，评估股直肌腱自体移植物用于ACL重建的尺寸特征，发现平均长度30.8 cm（99.1%≥24 cm），双股直径8.1 mm、三股9.3 mm，仅1.4%三股移植物<8 mm；患者身高与移植物长度相关性最强（r=0.563），术中并发症率11.4%且多发生于技术学习早期。股直肌腱可提供稳定可预测的多股移植物尺寸，尤其适用于软…
英文摘要
BACKGROUND: The rectus femoris tendon has recently gained attention as a promising soft tissue autograft for anterior cruciate ligament (ACL) reconstruction. However, there is limited information regarding its graft dimensions, harvesting technique, and safety profile. PURPOSE: To evaluate the dimensions of the rectus femoris tendon graft in patients undergoing ACL reconstruction, identify anthropometric predictors of graft size, describe key technical steps for safe harvesting, and report intraoperative complications. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A total of 211 consecutive patients undergoing ACL reconstruction with rectus femoris tendon autograft were prospectively enrolled across multiple centers. Graft dimensions-length and diameter in 2- and 3-strand configurations-were recorded intraoperatively. Correlations between graft size and patient anthropometry were assessed, and a multivariable regression model was developed to predict graft length. Intraoperative complications during graft harvesting were also documented. RESULTS: The mean graft length was 30.8 ± 3.4 cm, with 99.1% measuring ≥24 cm. Mean diameters were 8.1 ± 0.6 mm (2-strand) and 9.3 ± 0.7 mm (3-strand), with only 1.4% of 3-strand grafts measuring <8 mm. Patient height showed the strongest correlation with graft length (r = 0.563). Complications occurred in 11.4% of cases, mostly minor and during the early adoption phase of this technique. CONCLUSION: The rectus femoris tendon provides consistent and predictable graft dimensions suitable for multistrand ACL reconstruction, including in patients at higher risk of undersized soft tissue grafts. These morphometric findings support its potential as an autograft option and provide a basis for preoperative planning. Clinical outcomes and donor-site morbidity require evaluation in future studies.