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Since February 1987 we have been performing Kapandji's intra-focal pinning as first choice for treating distal radial fractures. From July 1991, we started to use new “ARUM” pins which were proposed specifically to avoid injuries to the tendons and nerves in Kapandji's method. The “ARUM” pin is so named because of its resemblance to the shape of an arum flower and composed of a 20/10mm full threaded pin and a special nut. The conical form of the nut makes possible sliding between tendons without damaging them and widens the gap of the fracture which will act as a reduction effect.From July 1991 to May 1993, we treated 30 distal radial fractures by Kapandji's intra-focal pinning with the new “ARUM” pins. Patients comprised 19 females and 11 males with an average age of 52.2 years, ranging from 15 to 91 years. Follow-up averaged 11.4 months with a range of 3 months to 2 years. According to Kawashima's evaluating system, 23 were rated excellent and 7 good subjectively, 15 excellent and 15 good functionally and 20 excellent and 10 good anatomically. There were no complications due to the cut ends of the pins.Present findings indicate that the new “ARUM” pin is not only effective for protecting against damage to tendons and nerves from the cut end of the pin but also improves the clinical results achieved by Kapandji's method due to its excellent reduction and fixation effects.

Experience using Kapandji's Method for Fractures of the Distal Radius with New "ARUM" Pins.