Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Hip
Abstract number: 23027
WITH CONSTRAINED LINERS OR DUAL MOBILITY OUTCOMES OF TOTAL HIP
ARTHROPLASTY ARE SIMILAR FOR PATIENTS WITH DISPLACED FEMORAL
NECK FRACTURES AND OSTEOARTHRITIS
Philippe HERNIGOU, Charle Henri FLOUZAT LACHIANETTE, Paolo FILIPPINI,
Alexandre POIGNARD
Hopital Henri Mondor, Creteil (FRANCE)
This study attempted to evaluate whether total hip arthroplasty (THA) for displaced
femoral neck fractures had significantly different outcomes when compared with THA
for osteoarthritis. 1800 patients had THA between 1999 and 2005. Six hundred
patients (mean age, 79.7 years) had THA for displaced femoral neck fractures; 1200
patients (mean age, 76.9 years) were treated with total hip arthroplasties for
osteoarthritis. 75 per cent with fractures and 60 per cent with OA had a preoperative
medical comorbidity including neurologic and vascular diseases. All THAs were done
using postero lateral approach and cemented implants. Standard liners were used for
OA. Constrained liners or dual mobility were used to avoid dislocation in fractures.
Patients had radiographic assessment, physical examination, and evaluation with the
Harris hip score. The mean followup was 7 years. The mean Harris hip score for
patients treated with a total hip arthroplasty for a femoral neck fracture was 85 points;
the mean hip score for patients treated with a total hip arthroplasty for osteoarthritis
was 87 points. Patients who were treated with a total hip arthroplasty for a femoral
neck fracture did not have increased perioperative morbidity compared with patients
who had a total hip arthroplasty for osteoarthritis. The rate of dislocation was 2 per
cent and not significantly different between the two groups. This study suggests that
with selected liners the outcomes for total hip arthroplasties in this consecutive series
of patients treated for displaced femoral neck fractures and osteoarthritis are
comparable.
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