Dynamic traction after extensor tendon repair in zones 6, 7, and 8: a retrospective study.

Review of the notes of 46 extensor tendon repairs in 21 patients treated by post-operative dynamic traction without an M.P. flexion block, no tendon ruptures or extensor lag and only one digit without full flexion after a mean follow-up of seven weeks. Re-examination of 26 treated repairs in nine patients for this study demonstrated a mean T.A.M. of 259 degrees at an average 14 months follow-up. No bow-stringing occurred because the extensor retinaculum was not excised, and no tenolyses were necessary.