{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,8]],"date-time":"2026-08-08T14:05:57Z","timestamp":1786197957297,"version":"build-2736575974"},"reference-count":17,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2019,4,1]],"date-time":"2019-04-01T00:00:00Z","timestamp":1554076800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["PM&amp;R"],"published-print":{"date-parts":[[2019,11]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>There exists a need for an adjustable socket to accommodate residual limb volume and shape changes. Further, limb loss rates globally are rising and there is a large unmet need for affordable and accessible prosthetic systems.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>To assess the utility of an immediate fit modular prosthetic system (iFIT Prosthetics, LLC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p>Prospective feasibility study involving a 2\u2010week single\u2010group pre\u2010post intervention study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Setting<\/jats:title><jats:p>Physical Medicine and Rehabilitation gait laboratory.<\/jats:p><\/jats:sec><jats:sec><jats:title>Participants<\/jats:title><jats:p>Participants were at least 6 months post amputation and walking with a conventional prosthesis. They were free of skin wounds, other neurological disorders, and severe pain conditions.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Participants were fit with an immediate fit prosthesis and instructed to wear it for a 2\u2010week evaluation period. They were given a progressive wearing schedule and they completed outcome measurements at the 2\u2010week follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Main Outcome Measurements<\/jats:title><jats:p>Self\u2010reported satisfaction, gait biomechanics, and intrasocket peak pressures.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Twenty\u2010six participants entered the study, with 22 completing the single group pre\u2010post study. They averaged 50\u2009years (SD \u00b110.2) of age; four were female. Sixteen were dysvascular and 10 were traumatic in etiology. Significant differences (<jats:italic>P<\/jats:italic>\u2009=\u2009.03) in self\u2010reported satisfaction were found in favor of the iFIT device 29.33 (SD\u2009\u00b1\u20094.51) versus the conventional device 25.52 (SD\u2009\u00b1\u20096.8). No falls or limb ischemia were reported. Gait biomechanics revealed no differences across any temporal characteristics. Intrasocket peak pressures were significantly lower for the iFIT prostheses overall (<jats:italic>P<\/jats:italic>\u2009=\u2009.0014), at the anterior tibia (<jats:italic>P<\/jats:italic>\u2009=\u2009.0002), and the lateral side of the residual limb (<jats:italic>P<\/jats:italic>\u2009=\u2009.013).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The iFIT transtibial prosthetic system appears to be safe in this short\u2010term single\u2010group pre\u2010post study. This study provided preliminary evidence to support the feasibility of the iFIT system. It compared favorably to participants' conventional prostheses across all outcome measures. With its cost, adjustability, and accessibility advantages, this device may prove useful for persons with transtibial amputations. A larger multicenter study is needed to confirm these results.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>III<\/jats:p><\/jats:sec>","DOI":"10.1002\/pmrj.12133","type":"journal-article","created":{"date-parts":[[2019,2,8]],"date-time":"2019-02-08T01:59:14Z","timestamp":1549591154000},"page":"1210-1217","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["A Prospective Assessment of an Adjustable, Immediate Fit, Transtibial Prosthesis"],"prefix":"10.1002","volume":"11","author":[{"given":"Timothy","family":"Dillingham","sequence":"first","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation University of Pennsylvania School of Medicine  Philadelphia PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica","family":"Kenia","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine and Rehabilitation University of Pennsylvania School of Medicine  Philadelphia PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frances","family":"Shofer","sequence":"additional","affiliation":[{"name":"Department of Emergency Medicine University of Pennsylvania School of Medicine  Philadelphia PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jim","family":"Marschalek","sequence":"additional","affiliation":[{"name":"Department of Engineering, Advanced Design Concepts  Pewaukee WI"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,4]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apmr.2007.11.005"},{"issue":"8","key":"e_1_2_6_3_1","first-page":"875","article-title":"Limb amputation and limb deficiency: epidemiology and recent trends in the United States","volume":"95","author":"Dillingham TR","year":"2002","journal-title":"South Med 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