Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Hip
Abstract number: 23783
THE EFFECT OF ACETABULAR CUP PLACEMENT ON HIP JOINT FUNCTION
OF CROWE TYPE 3 AND 4 HIPS
Mehmet BALIOGLU, Devrim OZER, Umit AYKUT
Baltalimani Bone Disease Teaching Hospital, Istanbul (TURKEY)
PURPOSE: Total hip replacement (THR) is more complicated with patients with
coxarthrosis due to developmental displasia of the hip (DDH) than patients with
primary coxarthrosis. We studied radiological and functional results of patients with
crowe type 3 and 4 hips which received acetabular cup placement for THR.
MATERIAL and METHOD: 10 hips (8 female, 2 bilateral, 5 right, 5 left) that received
THR were evaluated. The average age was 52,4 (36,9 - 65). Preoperatively 4 hips
were evaluated as type 3 and 6 hips type 4 according to the Crowe classification. In
the final evaluation functional results were evaluated using Harris Hip Score (HHS),
Oxford Hip Score (OHS) and Visual Analog Score (VAS). For 3 hips the acetabular
component was placed in the high hip rotation center with extenstive soft tissue
release and no femoral shortening. For 7 hips the component was placed in the
normal rotation center and 4 of these patients received femoral shortening. The
average follow up was 66.3 months (17 - 97). RESULT: In the final control OHS was
an average of 17.5, and HHS was an average of 89.7. The preop average VAS was
9.2, postop was 2. CONCLUSION: Femoral shortening for Crowe type 3 and 4
patients may be necessary for acetabular placement in the normal hip rotation
center. However, patients who received the acetabular component placement in the
high hip rotation center compared to normal rotation placement patients showed no
difference in their radiological and functional mid term results.
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