Biomechanical evaluation of nickel-titanium shape-memory alloy enclosed interlocking intramedular nail.
- Author:
Yan-ming CAO
1
;
Wei-dong ZHAO
;
Mei-chao ZHANG
;
Kan BAO
;
Guo-zu DA
Author Information
- Publication Type:Journal Article
- MeSH: Biomechanical Phenomena; Bone Nails; Fracture Fixation, Intramedullary; instrumentation; methods; Humans; Humeral Fractures; physiopathology; surgery; Nickel; Titanium
- From: Journal of Southern Medical University 2006;26(5):584-586
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo study the biomechanical characteristics of Ni-Ti shape-memory alloy-enclosed interlocking intramedular nail Ni-Ti En for clinical application.
METHODSSix transverse fractures were induced in 6 fresh humeral shafts and fixed with Ni-Ti En, plate, interlocking intramedullary nail, and Ender nail, respectively. The specimens then underwent stress analysis for comparison of the bending strength, twisting force, and flexibility.
RESULTSThe bending strength of Ni-Ti En was not significantly different from that of the plate and better than ender's nail; the twisting force of the interlocking intramedullary nail was comparable with the plate, but better than Ender nail.
CONCLUSIONNi-Ti Enpossess good biomechanical property to meet the demand of osteosynthesis, and its less stress protection, freedom of distant nail locking, flexibility and stable fixation may accelerate fracture healing.