ArticleOTA international : the open access journal of orthopaedic trauma2021
Avoiding the blood supply to the femoral head during cannulated screw fixation: A comparison of two techniques.
Article in OTA international : the open access journal of orthopaedic trauma, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo compare the strength of the inverted triangle (IT) versus the L-shaped cannulated screw fixation technique for stabilizing a Pauwels 2 femoral neck fracture. To demonstrate the risk to the blood supply to the femoral head from a posterior-superior screw.
methodsThe IT construct was compared with the L-shaped design in 10 composite femurs. A Pauwels 2 fracture was made with a 5 mm gap. Each specimen was loaded over 5000 cycles, measuring angular/shear displacement then loaded to failure. The data were analyzed using Mann-Whitney
resultsThere was no difference in angular (
conclusionsThe strength of the L-shaped construct was not statistically different than the strength of the IT design. The posterior-superior screw may put the main blood supply to the femoral head at risk and should be avoided.
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