Recovery of muscle transfers replacing the total plantar flexor muscle group in rats.

Recovery of muscle transfers replacing the total plantar flexor muscle group in rats.
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恢复大鼠中肌肉移植替代总跖屈肌群。

DOI:
10.1152/jappl.1998.84.6.1865
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发表时间:
1998
期刊:
Journal of applied physiology (Bethesda, Md. : 1985)
影响因子:
--
通讯作者:
Faulkner,JA
Faulkner,JA
中科院分区:
--
文献类型:
--
作者:
Miller,SW;Hassett,CA;Faulkner,JA

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在大鼠中,足底屈肌肌肉的组合代表总足底屈肌组的质量的20%、40%、60%和80%,在没有协同肌肉的情况下原位转移,并允许恢复120天。我们假设,与它们的结构和功能变量的单独控制值相比,转移将显示一个层次阵列的赤字,与它们的初始质量成正比,因此,与转移的相对负荷成反比。令人惊讶的是,与其单独的对照值相比,每个肌肉转移显示出肌肉质量,总纤维横截面积和最大等长力的30 - 40%的赤字,除了最小的转移,跖肌(PLN)肌肉,其恢复了100%的控制值为这些变量中的每一个。因此,除了PLN转移,研究的肌肉转移显示赤字类似的幅度报告的肌肉转移中存在的协同肌肉。PLN转移的更大恢复归因于由于总跖屈肌组的平均力要求而对该转移施加的相对较大的力产生要求。
In rats, combinations of plantar flexor muscles representing ∼20, 40, 60, and 80% of the mass of the total plantar flexor group were transferred orthotopically in the absence of synergistic muscles and allowed to recover for 120 days. We hypothesized that, compared with their individual control values for structural and functional variables, the transfers would display a hierarchical array of deficits, proportional to their initial mass and, consequently, inversely proportional to the relative load on the transfers. Surprisingly, compared with their individual control values, each muscle transfer displayed deficits of 30–40% in muscle mass, total fiber cross-sectional area, and maximum isometric force, with the exception of the smallest transfer, the plantaris (PLN) muscle, which recovered 100% of its control value for each of these variables. Therefore, except for the PLN transfer, the muscle transfers studied displayed deficits similar in magnitude to those reported for muscles transferred in the presence of synergistic muscles. The greater recovery of the PLN transfer was attributed to the relatively large requirement for force production imposed on this transfer due to the average force requirements of the total plantar flexor group.
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期刊: Journal of applied physiology (Bethesda, Md. : 1985)
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