Hioki Shigeru, Fukubayashi Toru, Ikeda Kotaro, Niitsu Mamoru, Ochiai Naoyuki
Kinu Medical Association Hospital, 13-3 Araigi Town, Mitsukaido City, 303-0016, Ibaraki, Japan.
Knee Surg Sports Traumatol Arthrosc. 2003 Jul;11(4):223-7. doi: 10.1007/s00167-003-0361-z. Epub 2003 Apr 15.
This study evaluated intramuscular movement of hamstrings muscle after reconstruction of the ACL with a hamstrings tendon graft. The movement of the muscles during knee flexion was measured using a novel MRI technique called the "tagging snapshot" technique, which labels multiple tagging bands within the musculature. Eleven patients who underwent ACL reconstruction using autogenous semitendinosus and gracilis tendons were studied. The difference in the maximum active knee flexion angle between the ACL-reconstructed and the intact knee was calculated as knee flexion lag. Knee flexion strength was measured in 8 of the 11 patients. The semitendinosus muscle of the ACL-reconstructed knee exhibited three different morphological patterns; group I, similar shape to the intact knee with distal tendonlike structures; group II, smaller proximally than the intact knee with distal tendonlike structures; and group III, considerably smaller proximally than the intact knee without distal tendonlike structures. Each group was associated with a different knee flexion lag and different knee flexion strength. Our results indicated that the effect of hamstrings tendon harvest on knee function is not uniform.
本研究评估了采用腘绳肌腱移植重建前交叉韧带（ACL）后腘绳肌的肌内运动情况。在膝关节屈曲过程中，使用一种名为“标记快照”技术的新型磁共振成像（MRI）技术来测量肌肉的运动，该技术可在肌肉组织内标记多个标记带。对11例采用自体半腱肌和股薄肌腱进行ACL重建的患者进行了研究。计算ACL重建膝关节与正常膝关节之间最大主动膝关节屈曲角度的差异，作为膝关节屈曲滞后。在11例患者中的8例测量了膝关节屈曲力量。ACL重建膝关节的半腱肌呈现出三种不同的形态模式；I组，形状与正常膝关节相似，具有远端腱样结构；II组，近端比正常膝关节小，具有远端腱样结构；III组，近端比正常膝关节小得多，没有远端腱样结构。每组与不同的膝关节屈曲滞后和不同的膝关节屈曲力量相关。我们的结果表明，腘绳肌腱取材对膝关节功能的影响并不一致。
