| Autor: |
Lacroix H; University Hospital-Dijkzigt, Rotterdam, The Netherlands., Arwert H, Snijders CJ, Fontijne WP |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of bone and joint surgery. British volume [J Bone Joint Surg Br] 1995 Mar; Vol. 77 (2), pp. 274-6. |
| Abstrakt: |
To investigate the origin of fractures at the distal locking site of the Gamma nail, we loaded ten paired human cadaver femora fixed with a Gamma nail in torsion until they fractured. When an awl was hammered in to start the hole for distal locking a fissure appeared in the lateral cortex of all the femora, and the mean torsional load to create a fracture was reduced by 57.8% compared with that in a control group in which the distal locking hole had been started with a centre drill. When an additional drill hole was made, the mean failure load in torsion decreased by 35.7%. We strongly recommend that an awl should not be used at the distal locking site of the Gamma nail; we recommend the use of a centre drill. Additional drill holes should be avoided because they act as stress raisers. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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