Reaming debris in osteotomized sheep tibiae.
BACKGROUND
Reamed nailing gives better fracture healing than unreamed nailing in operative treatment of fractures and nonunions. This study investigates the effect of isolated reaming debris on fracture healing in an animal model.


METHODS
Thirty sheep were treated with an osteotomy of the tibia with 5-mm distraction. In one group, the osteotomy gap was left empty; in the second group, the gap was packed with reaming debris from the ipsilateral femur; and in the third group, the gap was packed with cancellous bone from the iliac crest. At follow-up, callus volume was measured on standard radiographs.


RESULTS
After 3 weeks, callus volume from the reaming debris group as well as the iliac crest group had increased significantly compared with the empty group.


CONCLUSIONS
This study shows that isolated reaming debris supports callus building as much as conventional bone grafting, which might explain why fractures heal with more callus formation when treated with reamed nailing compared with unreamed nailing.
Department of Trauma & Accident Surgery, Academic Hospital Vrije Universiteit, P.O. Box 7057, 1007 MB Amsterdam, The Netherlands. jp.frolke@azvu.nl
J P
JP
Frölke
F C
FC
Bakker
P
P
Patka
H J
HJ
Haarman
D000818:Animals; D001858:Bone Nails; D016025:Bone Transplantation; D002146:Bony Callus; D005260:Female; D017102:Fracture Healing; D023421:Models, Animal; D010027:Osteotomy; D012756:Sheep; D013978:Tibial Fractures / Q000601:surgery*