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DeRoyal® LMB Spring PIP Finger Extension Assist (Model 504) corrects boutonniere deformity and treats PIP tightness. Shorter version of LMB Spring Finger Extension Assist (Model 501). Force at 15° flexion is approximately 8 oz.; 90° flexion is approximately 4 lbs. Wire-Foam™ for a customized fit.
Sizing: Measure the volar surface distance from MP crease to distal finger crease.
X-Small (AA) fits 1-1/4"
Small (A) fits 1-7/8"
Medium (B) fits 2"
Large (C) fits 2-1/4"
X-Large (D) fits 2-5/8"
Specify size when ordering.