Shorter version of model 501. Doesn`t involve the MCP joint. The smaller sizes can be used for the DIP joint. The spring can be esily adjusted. The force is approximately 2.3 N in 15 degrees of flexion. Indications:Extension defect of 45 degrees or less in the PIP joint, correction of Boutonniere defect. Length in cm. Take the measurement on the volar side of the finger, from the base of the joint.
