Load on osseointegrated fixation of a transfemoral amputee during a fall: Loading, descent, impact and recovery analysis
Load on osseointegrated fixation of a transfemoral amputee during a fall: Loading, descent, impact and recovery analysis
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DOI：
10.3109/03093640903585024
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发表时间：
2010-03-01
影响因子：
1.5
通讯作者：
Branemark, Rickard
中科院分区：
文献类型：
--
作者：
Frossard, Laurent Alain;Tranberg, Roy;Branemark, Rickard
跌倒对安装了骨结合固定装置的下肢截肢者来说是一种健康风险，主要是因为对固定装置的潜在损坏。本研究的目的是描述一名安装骨整合固定的经股截肢者在参加步态测量会议以评估施加在残端上的载荷时意外发生的真实的前倾。目的是分析施加在固定上的载荷，重点是事件顺序、力和力矩的模式和大小。使用六通道传感器在200 Hz下直接测量载荷。还研究了补充录像。跌倒分为四个阶段：加载（240 ms），下降（620 ms），影响（365 ms）和恢复（2495 ms）。主要冲击力和力矩发生在脚跟接触后870 ms和915 ms，分别对应于133% BW和17% BWm，或者是参与者先前步骤期间施加的最大力和力矩的1.2倍和11.2倍。这项研究为工程师和临床医生提供了关键信息，这些工程师和临床医生面临着设计设备、康复和锻炼计划的挑战，以安全地恢复下肢截肢者的运动。
Falling represents a health risk for lower limb amputees fitted with an osseointegrated fixation mainly because of the potential damage to the fixation. The purpose of this study was to characterize a real forward fall that occurred inadvertently to a transfemoral amputee fitted with an osseointegrated fixation while attending a gait measurement session to assess the load applied on the residuum. The objective was to analyze the load applied on the fixation with an emphasis on the sequence of events, the pattern and the magnitude of the forces and moments. The load was measured directly at 200 Hz using a six-channel transducer. Complementary video footage was also studied. The fall was divided into four phases: Loading (240 ms), descent (620 ms), impact (365 ms) and recovery (2495 ms). The main impact forces and moments occurred 870 ms and 915 ms after the heel contact, and corresponded to 133% BW and 17 % BWm, or 1.2 and 11.2 times the maximum forces and moments applied during the previous steps of the participant, respectively. This study provided key information to engineers and clinicians facing the challenge to design equipment, and rehabilitation and exercise programs to restore safely the locomotion of lower limb amputees.