Seth Mayank, Beisheim-Ryan Emma H, Pohlig Ryan T, Horne John Robert, Hicks Gregory E, Sions Jaclyn M
Delaware Limb Loss Studies, Department of Physical Therapy, University of Delaware, Newark DE.
Biostatistics Core, University of Delaware, Newark, DE.
Arch Rehabil Res Clin Transl. 2021 Oct 12;3(4):100161. doi: 10.1016/j.arrct.2021.100161. eCollection 2021 Dec.
To evaluate differences in vibration perception thresholds between adults with transtibial amputation and age-matched adults without amputation and to examine associations between vibration perception thresholds and balance performance. We hypothesized that adults with transtibial amputation would demonstrate lower thresholds compared with adults without amputation and that lower thresholds would be associated with better functional balance.
Prospective cross-sectional study.
National conference, clinical practice, and university laboratory.
Adults (N=34) with a nondysvascular, unilateral, transtibial amputation and 43 age-matched controls without amputation.
Participants' vibration perception thresholds were evaluated bilaterally by applying a vibration stimulus to the midpatella and recording their verbal response to conscious perception of stimulus. Functional balance was assessed with the Berg Balance Scale and the Four Square Step Test.
Residual and sound limb (right and left for controls) vibration perception thresholds, Berg Balance Scale, and Four Square Step Test.
For participants with transtibial amputation and controls, there were no significant between-group (=.921) or interlimb (=.540) differences in vibration perception thresholds. Overall, robust regression models explained 35.1% and 19.3% variance in Berg Balance Scale scores and Four Square Step Test times, respectively. Among adults with transtibial amputation, vibration perception thresholds were negatively associated with Berg Balance Scale scores (=.009) and positively associated with Four Square Step Test times (=.048). Among controls, average vibration perception thresholds were not significantly associated with functional balance (>.050).
Adults with nondysvascular, transtibial-level amputation demonstrated similar vibration detection compared with adults with intact limbs, indicating that vibration detection is preserved in the amputated region postamputation. These findings suggest a unique relationship between vibration perception and functional balance post-transtibial amputation.
评估经胫截肢成年人与年龄匹配的非截肢成年人之间振动觉阈值的差异，并研究振动觉阈值与平衡能力之间的关联。我们假设，与非截肢成年人相比，经胫截肢成年人的阈值会更低，且更低的阈值与更好的功能平衡相关。
前瞻性横断面研究。
全国性会议、临床实践及大学实验室。
34名非血管性、单侧经胫截肢的成年人以及43名年龄匹配的非截肢对照者。
通过在髌骨中部施加振动刺激并记录参与者对刺激有意识感知的言语反应，双侧评估参与者的振动觉阈值。使用伯格平衡量表和四方步测试评估功能平衡。
残肢及健侧肢体（对照者的右侧和左侧）的振动觉阈值、伯格平衡量表及四方步测试。
对于经胫截肢参与者和对照者，振动觉阈值在组间（P = 0.921）及肢体间（P = 0.5
