Interim results of thirty-one cases including thirty-two operations reconstructed for their loss of opposition of the thumb after median nerve palsy were reported and discussed their indications individually. Among several procedures, i. e. 1. FDS transfer (modified Bunnell's method), 2. ABD, D. M. transfer (Littler), 3. proprius tendon transfer, and 4. palmaris longus transfer (Camitz), a proprius tendon transfer opponensplasty, either the extensor digiti minimi or the extensor indicis proprius is our first choice in a low median nerve permanent paralysis without or with associated flexor tendon injury. Camitz's method is applicable in a carpal tunnel syndrome with complete loss of ABD, P. B. muscle even if the muscle paralysis may be transient.
