Plantar pressure distribution can reflect the force of several key points on foot while standing and walking. A comprehensive understanding of the plantar pressure distribution makes great sense in the following aspects:the understanding of the normal foot biomechanics and function, clinical diagnosis, measurement of disease extent, postoperative efficacy evaluation, and rehabilitation research. A simple plantar pressure measurement device was designed in this study. This paper uses FlexiForce flexible sensor to pickup plantar pressure signal and USB A/D board to do data acquisition. The data are transferred into a laptop and processed by a VB-based software which can display, remember and replay the data. We chose patients with hallux valgus and normal people to measure the pressure distribution and make contrast analysis of plantar pressure with this device. It can be concluded that people with hallux valgus have higher pressure on the second metatarsophalangeal joint and the distribution move outward. The plantar pressure of patients postoperative could be greatly improved compared to the preoperative. The function of this device has been confirmed.
目的 了解依托芬那酯凝膠對有疼痛癥狀的輕中度拇外翻畸形的治療效果。 方法 對2010年3月－2011年7月門診收治的輕中度拇外翻患者共65足，隨機分成兩組，治療組采取托芬那酯凝膠局部應用和佩戴夜間支具，對照組佩戴夜間支具，局部應用安慰劑，治療周期1個月。記錄癥狀明顯緩解時間，治療前后對患者進行視覺模擬疼痛評分和美國骨科足踝分會跖趾及趾間關節評分，并測量拇外翻角和第一跖骨間角改變。 結果 全部患者完成治療，疼痛緩解時間治療組為（3.28 ± 1.04）d，對照組（7.03 ± 2.15）d，差異有統計學意義（P＜0.05）,佩戴足矯形器治療1個月，拇外翻角和第一跖骨間角改變無統計學差異（P＞0.05）。 結論 局部應用依托芬那酯凝膠結合足矯形器治療輕中度拇外翻能快速緩解疼痛癥狀，改善活動能力，延緩畸形加重，依托芬那酯凝膠局部給藥患者能良好耐受，可避免口服非甾體抗炎藥（NSAIDs）帶來的副作用。