OBJECTIVETo analyse the vola stress change after operation of wrop-around flap for thumb reconstruction,to know the influence of vola pressure change after operation of wrop-around flap.

METHODSFrom 1996 to 2004, 23 patients after the operation of wrop-around flap for thumb reconstruction were measured the entire footprint, the vola stress of single foot and double feet on static state and walking status. There were 16 males and 7 females,with a mean age of 23.7 years (17 to 42 years). The time from operation to measuring was 1.6 to 6 years (meana 3.8 years). The results of measuring were analyzed.

RESULTSWhether static footprint analysis or dynamic mechanical analysis, the plantar pressure distribution of donated foot were obviously different with those of the opposite site. The weight bearing of heel and the fourth and fifth metatarsal heads were nearly consistent with normal foot. But the former feet were obviously different. The weight bearing of the first metatarsal head was obviously lower than normal foot. And the weight bearing of the second and third metatarsal heads were obviously higher than normal foot.

CONCLUSIONThe operation of wrop-around flap for thumb reconstruction has advantage of the cosmesis and function of the reconstructed thumbs nearly consistent with normal thumbs. But the operation influences the postoperative foot pressure.