Sanders Joan E, Lanahan Conor L, Mertens Joseph C
University of Washington Department of Bioengineering, Seattle WA, USA.
University of Washington Department of Bioengineering, Seattle WA, USA.
Med Eng Phys. 2025 Jan;135:104279. doi: 10.1016/j.medengphy.2024.104279. Epub 2024 Dec 20.
The purpose of this research was to investigate the use of time to peak temperature (TTP) as a metric for characterizing skin adaptation in prothesis users. Two experiments were conducted. A static pressure was applied to a participant's transtibial residual limb for 10 min, then a thermal imaging camera was used to capture the time-varying temperature response. The TTP, time to reach 70 % of the maximum temperature, was shorter at locations adapted to mechanical stress, the patellar tendon and anterior lateral distal region (mean 41.5 s and 47.2 s, respectively), than at mid-limb locations (127.1 s). In the second experiment, an able-bodied participant rubbed a towel across the anterior proximal aspect of his lower limb each day for 5 min per day for 11 days. His mean TTP in the region decreased from 68.5 s at Day 1 to 47.2 s at Day 11. The results suggest that a short TTP reflects skin well adapted to mechanical stress and a long TTP reflects skin not well adapted to mechanical stress. Investigations characterizing relationships between TTP and health outcomes should be pursued.
本研究的目的是调查使用峰值温度时间（TTP）作为一种衡量假肢使用者皮肤适应性的指标。进行了两项实验。对一名参与者的经胫骨残肢施加静态压力10分钟，然后使用热成像相机捕捉随时间变化的温度响应。在适应机械应力的部位，即髌腱和前外侧远端区域（平均分别为41.5秒和47.2秒），达到最高温度70%的时间（TTP）比肢体中部位置（127.1秒）要短。在第二项实验中，一名身体健全的参与者每天用毛巾摩擦其下肢前近端5分钟，持续11天。该区域的平均TTP从第1天的68.5秒降至第11天的47.2秒。结果表明，短的TTP反映皮肤对机械应力适应良好，而长的TTP反映皮肤对机械应力适应不佳。应开展关于TTP与健康结果之间关系的研究。
