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Comparative Effectiveness of Socket Casting Methods: Improving Form and Fit

Lower Limb Amputation Clinical Trial

Official title:
Comparative Effectiveness of Socket Casting Methods: Improving Form and Fit

Clinical Trial Summary

The overall objective is to compare hand casting to standing hydrostatic pressure casting using a water cylinder in persons with lower limb amputation. Our overall hypothesis is that standing hydrostatic pressure casting with a water cylinder will lead to more consistent and efficient residual limb shape capture and improved initial socket fit and comfort compared to hand casting.

Clinical Trial Description

One of the most important components of restoring function in persons with lower limb amputation is the precise fitting of the prosthetic socket to the residual limb. However, this is challenging because the residual limb is dynamic in shape and volume. Additionally, prosthetic socket fabrication processes influence socket fit. These processes typically consist of residual limb shape capture, positive mold rectification, initial diagnostic socket fitting, and definitive prosthesis delivery. The most prevalent residual limb shape capture method involves a negative wrap cast in a non-weight bearing position and manual manipulation of the cast to conform to the residual limb shape. With this technique it is challenging to accurately capture the bony contours and distribute pressure evenly around the residual limb. To improve shape capture, techniques that rely less on manual manipulation by the prosthetist, such as standing hydrostatic pressure casting with a water cylinder have been developed. Given the use of physics to shape the residual limb, it has been proposed that pressure casting results in better fitting and more comfortable sockets, however this has not yet been demonstrated. The overall objective is to compare hand casting to standing hydrostatic pressure casting using a water cylinder in persons with lower limb amputation. Our overall hypothesis is that standing hydrostatic pressure casting with a water cylinder will lead to more consistent and efficient residual limb shape capture and improved initial socket fit and comfort compared to hand casting. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04141748
Study type Interventional
Source Northwestern University
Contact
Status Completed
Phase N/A
Start date September 1, 2020
Completion date September 1, 2023
View Details
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