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RESULTS OF LOCKED CENTROMEDULLARY NAILING WITH REAMING FOR OPEN LEG FRACTURES



Abstract

Purpose: Reaming is classically contraindicated for open leg fractures. For certain authors, reaming can favour bone healing without increasing the risk of infection (Court-Brown JBJS 90B and 91B, Wiss Coor 95). The aim of this retrospective analysis of patients treated in a single centre was to validate these notions and determine the role of locked centromedullary nailing (LN) with reaming for the treatment of open leg fractures.

Material and methods: Between 1989 and June 2000, 141 open leg fractures were fixed with locked centromedullary nailing without reaming in 103 men and 38 women, mean age 34 years, who were mainly accident victims (2-wheel vehicles 43%, 4-wheel vehicles 22%). Multiple trauma was present in 18.7% of the cases and multiple fractures in 28%. Skin wounds were (Gustilo classification): type I 81 (57%), type II 38 (27%), type IIIA 14, and type IIIB 8. There was a simple fracture in 50% of the cases, a wedge fracture in 32%, and comminution in 18% with bifocal fractures in 10 cases. Osteosynthesis was performed within a mean 5.5 hours (2–18) and deferred in six cases. The Grosse and Kempf nail was used in all cases with reaming (man 11). Static locking was used in 88% of the cases. type I, II and IIA skin wounds were sutured after debridement. Three aponeurotomies were performed as preventive measures. Type IIIB wounds were treated by early plasty. A brief antibiotic prophylaxis was given in all cases.

Results: There was one aggravation of the comminution, two dismantelings subsequent to unauthorised weight-bearing, three compartment syndromes and one lateral sciatic popliteal paralysis. Two patients died from their multiple injuries. Four patients developed infection: two healed without removing the nail, one was amputated (free flap failure). One patient consulted another unit. Ten patients who were not residents of our area were lost to follow-up. Dynamisation was performed in 31 patients (25.6%) at a mean 4.4 months. Four patients with delayed healing cured after a new nailing with secondary reaming. Delay to bone healing was related to the type of fracture (p < 0.01): 4.2 months for type A (AO classification), 5.2 months for type B and 5.9 months for type C. Bone healing was correlated with Gustilo type (p < 0.05): 4.5 months for types I, 4.6 months for type II, 5.8 months for types III. Six patients developed nonunion: four were revised with success after a new nailing and secondary reaming (two lost to follow-up). Delayed healing and non-union were related to type of fracture (A = 3.8%, B = 15.6%, C = 18%) and soft tissue damage (Gustilo I: 4.1%; II: 10.7%; III: 15.8%).

Discussion conclusion: Locked centromedullary nailing with reaming is appropriate when the skin wound is minimal; dynamisation and/or replacement of the nail with secondary reaming should be discussed early in case of delayed healing.

The abstracts were prepared by Pr. Jean-Pierre Courpied (General Secretary). Correspondence should be addressed to him at SOFCOT, 56 rue Boissonade, 75014 Paris, France