A, After primary flexor tendon repair or flexor tendon graft, wrist and hand are held in posterior plaster splint. Additionally, involved finger is held in flexion by elastic band attached at wrist level and at fingernail by wire through nail or glued-on garment hook. This permits active finger extension and protected passive flexion. B, Immediate controlled mobilization of repaired flexor tendon is achieved with extension block splint and proper rubber band traction, allowing proximal interphalangeal joint extension against traction and flexion of 40 to 60 degrees. At 3 to 8 weeks, rubber band is attached to elastic bandage cuff at wrist. After removal of rubber band traction, night splinting can be used at 6 to 8 weeks if necessary. SEE TECHNIQUE 66.11.