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Figure 20. More compression/release stabilized (CRS) frame-interface transfemoral prostheses: (a) short frame for thin patient with offset locking pin and (b) accommodating long femoral remnant with severe flexioncontracture. CRS socket allowed patient to walk again after being confined to wheelchair >10 years. Alley RD, Williams TW III, Albuquerque MJ, Altobelli DE. Prosthetic sockets stabilized by alternating areas of tissue compression and release. J Rehabil Res Dev. 2011; 48(6):679-96.DOI:10.1682/JRRD.2009.12.0197