Bunion Surgery

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足部功能的研究
F-Scan^®
正常足部研究
拇趾外翻足部研究

正常步行

對大多數患者而言，拇趾外翻並非外觀問題，而主要是足部功能的病變所引致疼痛及無力的狀況，甚至患者自己有時也很難意識到它的真實情況。拇趾外翻痛楚主要是由於患者通常會下意識地改變其正常步姿，從而使其肌肉緊張並引起有關痛楚。

平時步行時向前的推動力有大約80%來自大拇趾，而其他四個腳趾僅佔20%。當大拇趾發生拇趾外翻而無法用力時，足部、腿部及甚至於全身行動時的用力方式都可能會受到影響。而這些用力模式的變化可以用電腦測力板裝置測量出來。

此類客觀的足部功能記錄可於術前用來衡量拇趾外翻的嚴重程度，也可於術後用來評估手術對足部恢復正常功能方面的效果，而不僅僅是外觀上有何改善。此類功能研究也應該像X光檢查一樣，被列入術前及術後的例行檢查項目。

足部功能研究

我們用來測量足部功能的設備是F-Scan^®。這是一種可將足下壓力及用力情況轉換為彩色照片、圖解及資料的電腦系統，用於臨床診斷。在鞋子裏放入一片薄如紙張的傳感板，即可將足部真實的用力行動情況記錄下來。

F-Scan^® - http://www.tekscan.com/medical/system_fscan1.html
‧ The F-Scan^® system from Tekscan, Inc. provides bipedal plantar pressures using an ultra thin, disposable sensor, which is placed inside the patient's shoes. The system is a simple, a non-invasive means to immediately determine orthotic efficacy, identify areas of potential ulceration, screen diabetic and other neuropathic patients, and observe gait abnormalities. The F-Scan enhances your ability to evaluate, substantiate and document your diagnosis. Used by top footwear companies, universities, and hospitals, the F-Scan system is an incredibly valuable tool for providing quantitative information in both clinical and research-oriented settings. Each F-Scan sensor includes 960 sensing elements, the result of a 60 x 21 sensing array design. The sensors' unique and patented construction enables them to be trimmed to fit any size shoe. These reusable sensors have a spatial resolution of 4 sensels/cm2. The sensors are ultra-thin (0.15mm) thus they are minimally intrusive and are useful both with and without orthotics. We are the only sensor manufacturer that can make that claim and support it. The standard operating pressure range of the sensors is approximately 160 PSI (11kg/cm2) maximum. With an 8 bit digital output of the electronics the user can read pressure differentials of ~ 50g/cm2 resolution. The F-Scan sensors detect, displays and records plantar forces while they take place, without interfering with the normal gait pattern. With innovative Windows-based software, information is presented frame-by-frame, played like a "movie" and shown in either 2-D or 3-D display. Easy to interpret pressure analysis graphs are an additional benefit to your evaluation. Tekscan's F-Scan 5.0 for Windows TM enhancements include multi-peak display, which allows the user to break down the movie into multiple phases. Some new optional features and add-ons to the F-Scan system, include TAM (Timing Analysis Module), video synchronization, and more!

F-Scan^® | Normal Feet | Bunion feet