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Does impaction matter in hip resurfacing? A cadaveric study
Publikationstyp
Journal Article
Date Issued
2011
Sprache
English
Author(s)
Siewe, Jan
Schiwy-Bochat, Karl H.
Eysel, Peer
Journal
Volume
26
Issue
2
Start Page
296
End Page
302
Citation
Journal of Arthroplasty 26 (2): 296-302 (2011)
Publisher DOI
Scopus ID
Publisher
Churchill Livingstone
Eight pairs of fresh frozen human femora were prepared for hip resurfacing. One side of each pair was impacted gently, the other side vigorously. After implantation procedure, specimens were loaded in a material testing machine to the ultimate fracture load. Median impaction loads on the vigorously implanted side were 11 298N compared to 1374N on the gently implanted side. Failure loads in the high-impact group (median, 8873N) were significantly (P = .0078) reduced when compared with the low-impact group (median, 9237N). The study stresses that meticulous reaming of the femoral head and the pinhole is of tremendous importance. Remaining obstacles can lead to excessive loads, while attempting to enforce the correct seating of the implant. Only careful, slight tapping should be applied to ensure final seating.
Subjects
Femoral neck fracture
Fracture load
Hip resurfacing
Impact
Load
DDC Class
610: Medicine, Health