Femoral neck remodelling after hip resurfacing surgery: a radiological study.
ANZ J Surg
; 84(9): 639-42, 2014 Sep.
Article
in En
| MEDLINE
| ID: mdl-24975089
ABSTRACT
BACKGROUND:
Narrowing of the femoral neck under the femoral component of the hip resurfacing has been noted previously and has raised concern. In this study we examined the X-rays of patients following Birmingham hip resurfacing surgery at 6-years follow-up.METHODS:
Bony changes proximally and distally were measured. Fifty-two patients were available for evaluation.RESULTS:
There were 40 (76.9%) men and 12 (23.1%) women, with a mean age of 52 years (25-64). The unoperated contralateral femoral neck was measured as a control. We found femoral neck narrowing proximally in 82.7% of patients and distally in 26.9% and on the contralateral side in 54.5%. The average narrowing was 3.6%. Widening was observed proximally in 17.3% and distally in 73.1% and on the contralateral side in 45.5%. The average widening was 3.9%. Four of the 52 patients had proximal narrowing exceeding 10% of the femoral neck diameter, and one of the 52 patients had inferior narrowing exceeding 10%.CONCLUSION:
Gender, body mass index, component size and age did not affect remodelling. We conclude that the observed findings are likely to be a manifestation of a generalized remodelling response in the femoral neck rather than a localized and isolated narrowing at the junction of the component and the femoral neck.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Osteoarthritis, Hip
/
Bone Remodeling
/
Arthroplasty, Replacement, Hip
/
Femur Neck
Type of study:
Diagnostic_studies
/
Evaluation_studies
/
Observational_studies
/
Prognostic_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
ANZ J Surg
Year:
2014
Document type:
Article
Affiliation country:
Australia