Whiteley Rod, Hickey Jack T, Vermeulen Robin, Timmins Ryan, Best Thomas M, Rio Ebonie, Opar David
Rehabilitation Department, Aspetar Sports Medicine Hospital, Doha, Qatar.
School of Human Movement & Nutrition Sciences, The University of Queensland, Brisbane, Australia.
Transl Sports Med. 2022 Sep 22;2022:5131914. doi: 10.1155/2022/5131914. eCollection 2022.
Document changes in fascicle length during rehabilitation from hamstring injury of the injured and uninjured legs and secondarily to describe any association between these changes and reinjury rate.
Multicentre case series.
Fifty-two prospectively included hamstring injured athletes had their biceps femoris long head fascicle lengths measured at the start and end of rehabilitation using two-dimensional ultrasound. Absolute and relative changes in fascicle length were compared for each leg using linear mixed models. Participants were followed for six months after being cleared to return to sport for any reinjury. Fascicle lengths and rehabilitation duration were compared for those who reinjured and those who did not.
Injured leg fascicle length was shorter at the start of rehabilitation (9.1 cm compared to 9.8 cm, < 0.01 ) but underwent greater absolute and relative lengthening during rehabilitation to 11.1 cm (18% increase) compared to 10.2 cm (8% increase, < 0.01 ) for the uninjured leg. There were no significant differences in any fascicle length parameter for the 5 participants who reinjured in the 6 months following their return to sport compared to those that did not reinjure.
While both injured and uninjured legs displayed increases in fascicle length during rehabilitation, the larger fascicle length increases in the injured leg suggest that either a different training stimulus was applied during rehabilitation to each leg or there was a different response to training and/or recovery from injury in the injured leg. Reinjury risk appears to be independent of fascicle length changes in this cohort, but the small number of reinjuries makes any conclusions speculative.
记录腘绳肌损伤的运动员在康复过程中受伤腿和未受伤腿的肌束长度变化，并进一步描述这些变化与再次受伤率之间的关联。
多中心病例系列研究。
52名前瞻性纳入的腘绳肌损伤运动员在康复开始和结束时使用二维超声测量股二头肌长头肌束长度。使用线性混合模型比较每条腿肌束长度的绝对变化和相对变化。参与者在获准恢复运动后随访6个月，观察是否再次受伤。比较再次受伤者和未再次受伤者的肌束长度及康复持续时间。
康复开始时受伤腿的肌束长度较短（9.1厘米，未受伤腿为9.8厘米，<0.01），但在康复过程中受伤腿的肌束长度绝对增加量和相对增加量更大，达到11.1厘米（增加18%），而未受伤腿为10.2厘米（增加8%，<0.01）。在恢复运动后的6个月内，5名再次受伤的参与者与未再次受伤的参与者相比，任何肌束长度参数均无显著差异。
虽然受伤腿和未受伤腿在康复过程中肌束长度均增加，但受伤腿肌束长度增加幅度更大，这表明在康复过程中对每条腿施加了不同的训练刺激，或者受伤腿对训练和/或损伤恢复有不同的反应。在该队列中，再次受伤风险似乎与肌束长度变化无关，但再次受伤人数较少，使得任何结论都具有推测性。
