A Prospective Assessment of an Adjustable, Immediate Fit, Transtibial Prosthesis

• A group of 22 volunteers with transtibial limb loss rated the iFIT socket as significantly better in terms of comfort, stability and fit versus their conventional prosthesis (iFIT average rating was 29.3±4.51 out of 35 possible points versus 25.2±6.8 for conventional socket).
• No falls or limb ischemia were reported or noted during follow up.
• Gait biomechanics revealed no differences across any temporal characteristics.
• Intrasocket peak pressures were significantly lower for the iFIT prostheses overall (P = .0014), at the anterior tibia (P = .0002), and the lateral side of the residual limb (P = .013).

This study provided preliminary evidence to support the feasibility of the iFIT system as it compared favorably to participants' conventional prostheses across all outcome measures. 
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Dillingham, T., Kenia, J., Shofer, F. and Marschalek, J., 2019. A prospective assessment of an adjustable, immediate fit, transtibial prosthesis. PM&R, 11(11), pp.1210-1217.