Two-stage treatment of flexor tendon ruptures. Silicon rod complications analyzed in 109 digits

Complications during two-stage flexor tendon reconstruction may jeopardize the function of the repaired tendons. We reviewed complications encountered in 89 patients (109 digits) treated with a two-stage flexor tendon reconstruction using either silicone or Hunter rods. The complications could be distinguished according to the stage of reconstruction in which they occurred. Complications during stage I included rod buckling, rupture of the distal end of the rod, rod migration, synovitis and infection, and during stage II included distal rupture of the graft juncture, loose graft, tight graft, bowstringing, and flexion deformity of the PIP and DIP joints. The commonest complication was a flexion deformity of the PIP and/or DIP joint which was related to the surgical procedure. These deformities could easily be corrected in all cases with night splints.