LMB Dynamic Wire-Foam™ Spring Extension Assist (Model 501) extends PIP joint with slight extension on MP. Adjustable. For finger flexion tightness and boutonniere (allows IP flexion). Force at 15° flexion is approximately 8 oz, at 90°, approximately 4 lbs. Sizing: Measure extended finger from distal palmar crease to distal finger crease.
X-Small (AA) fits 2-1/4" length, 7/8" width
Small (A) fits 2-5/8" length, 7/8" width
Medium (B) fits 3" length, 1" width
Large (C) fits 3-1/2" length, 1-1/8" width |