Bilateral changes in somatosensory sensibility after unilateral below-knee amputation
Bilateral changes in somatosensory sensibility after unilateral below-knee amputation
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DOI：
10.1016/j.apmr.2004.10.030
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发表时间：
2005-04-01
影响因子：
4.3
通讯作者：
Forget, R
中科院分区：
文献类型：
--
作者：
Kavounoudias, A;Tremblay, C;Forget, R
Objective: To evaluate possible alteration in proprioceptive and cutaneous sensibility in the nonamputated leg of unilateral transtibial amputees.Design: Cross-section at study with between-subjects (amputees vs controls) and within-subjects (nonamputated vs amputated leg) comparisons.Setting: Canadian rehabilitation hospital research laboratory.Participants: Two groups of amputees (34 due to traumatic causes, 14 due to vascular causes), recruited more titan 1 year after their prosthetic training; and 2 groups (n = 34, n = 14) of age-matched control subjects.Interventions: Not applicable.Main Outcome Measures: Threshold of movement detection and touch-pressure perception at the knee and foot levels.Results: In the traumatic group, the sensory thresholds of the nonamputated leg were significantly higher than the control values in the 2 modalities tested. The movement detection was reduced at the knee and ankle levels, whereas a decrease in touch-pressure sensibility was observed only at the plantar site. As expected, a large proportion of the vascular amputees presented with severe sensory deficits in the nonamputated leg particularly a loss in touch-pressure perception at the foot. The thresholds of movement detection were similar and correlated at both knees in the 2 groups of amputees. For the touch-pressure thresholds. no significant relationship was found between sides at the knee level.Conclusions: Sensory changes observed in the nonamputated leg suggest that central sensory adaptations Occur after amputation. For movement detection, they were marked by a matching of perception on both sides of the body. Functional significance of these changes remains to be determined.
