Radiographic Comparison of Vertical Tibial Translation Using Two Types of Suspensions on a Transtibial Prosthesis: A Case Study

Limiting vertical displacement within the transtibial prosthesis is the primary objective of a suspension mechanism. Two types of suspensions, the neoprene sleeve and the silicone suction socket suspension with lock, were compared on a single patient by using radiographic measurement of vertical tibial displacement and vertical soft-tissue displacement. Measurements were taken in weightbearing, partial weightbearing, and nonweightbearing positions. Tibial displacement was similar for both suspension methods. The neoprene sleeve suspension allowed 1.8 cm more distal soft-tissue displacement than did the silicone suction socket suspension. The patient reported comfort in both suspensions, but noted more “pistoning” in the neoprene sleeve suspension.