Izvorni znanstveni članak
Application of a Novel Bone Osteotomy Plate Leads to Reduction in Heat-Induced Bone Tissue Necrosis in Sheep
Marijo Bekić
Slavko Davila
Mato Hrskanović
Marijana Bekić
Sven Seiwerth
Viktorija Erdeljić
Darko Capak
Vladimir Butković
Sažetak
Previous studies have shown substantial effect thermal damage can have on new bone formation following osteotomy.
In this study we evaluated the extent of thermal damage which occurs in four different methods of osteotomy and the effects
it can have on bone healing. We further wanted to test whether a special osteotomy plate we constructed can lead to
diminished heat generation during osteotomy and enhanced bone healing. The four methods evaluated included osteotomy
performed by chisel, a newly constructed osteotomy plate, Gigly and oscillating saw. Twelve adult sheep underwent
osteotomy performed on both tibiae. Bone fragments were stabilized using a fixation plate. Callus size was assessed using
standard radiographs. Densitometry and histological evaluation were performed at 8 weeks following osteotomy. Temperature
measurements were performed both in vivo during the operation, and ex vivo on explanted tibiae. The defects
healed without complications and showed typical course of secondary fracture healing with callus ingrowth into the
osteotomy gap. Radiographic examination of bone healing showed a tendency towards more callus formation in bones
osteotomized using Gigly and oscillating saw, but this difference lacked significance. Use of Gigly and oscillating saw
elicited much higher temperatures at the bone cortex surface, which subsequently lead to slightly impaired bone healing
according to histological analysis. BMD was equal among all bones. In conclusion, the time required for complete healing
of the defect differed depended greatly on the instruments used. The newly constructed osteotomy plate showed best
results based on histological findings of capillary and osteoblast density.
Ključne riječi
osteotomy; thermal damage; new-constructed plate
Hrčak ID:
34310
URI
Datum izdavanja:
1.12.2008.
Posjeta: 1.190 *