Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Hip
Abstract number: 24166
RESULTS OF LARGE DIAMETER HEAD IN TOTAL HIP ARTHROPLASTY IN
INDIAN PATIENTS
Chandra YADAV, Ashok KUMAR, Shah KHAN, H.L NAG, Shishir RASTOGI
All India Institute of Medical Sciences, Delhi (INDIA)
Background: Larger diameter femoral heads have emerged as a valuable tool in the
arsenal against dislocation in total hip arthroplasty. Large head improves hip function
by joint restoration that is closer to its natural anatomy, maximizing the range of
motions and reduced potential for postoperative dislocation. Material & Methods: We
reviewed 120 patients (140 hips) retrospectively with varying diagnoses and
indications but all of whom received large-diameter femoral head either as a metalon-metal
or metal on high cross linked polyethylene prostheses. Posterior
approaches was used in al the cases. Results: Average age at time of surgery was
40.9 years and average follow-up was 9 months. There were 133 (96.4%) primary
procedures, 5 (3.57.0%) conversion procedures, and 2 (1.42%) revisions. The most
common preoperative diagnoses included osteoarthritis (92 hips).Rheumatoid
arthritis (20 hips), ankylosing spondylitis (20 hips) and avascular necrosis (8 hips).
The average preoperative Harris Hip Score was 37.5 points and was 90.8 points at
final follow-up. 135 hips were radiologically stable and 5 hips had dislocation, which
were managed by revision of acetabular components. Loosening, migration, or
osteolysis was not observed in any patients. Conclusion: Our experience has shown
good early results with large heads in total hip arthroplasty. Large heads with greater
stability and improved range of motions are promising solution for mobile hip in
Indian patients, who can not afford revision surgeries and require extra movements
for religious activities.
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