Abstract: Objective To investigate some neglected problems in treatment of traumatic foreign bodies on hands.Methods Foreign bodies were removed on 126 cases which were checked by X-ray before and after operation in recent ten years.Some were checked by ultrasound before operation.All the patients were followed for 1 to 8 months.Results There were 65 cases with foreign bodies under nail.Among them,18 cases had rough nails after nail extraction and others had good shaped nails after partial resection of nail.Foreign body with foreign body-fish bones was remained after extraction in 1 case.One needle foreign body remaining over 2 years and getting rusty was fractured in operation.In the 15 cases punctured by cactus,5 cases got swelling after operation.One of two explosive injury cases remained some foreign bodies after operation and caused infection.Conclusion Cases with foreign bodies under nail should avoid nail extraction in case of crude nail bed and deformation nail.Metallic foreign bodies with long persistence should be removed with surrounding soft tissue in case of fracture of metallic foreign body.A wide debridement is necessary when the hand was punctured by cactus and a thorough debridement is needed after explosive injury by gunpowder.

Key words: Foreign body, Hand, Extraction