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KMID : 0386719950070020116
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Journal of the Korean Hip Society
1995 Volume.7 No. 2 p.116 ~ p.124
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Do All Cementless Threaded Cups have Problems? -Minimal 5 year Follow-up Study of CLW(CementLess Weill) Threaded Acetabular Cup-
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이중명
조덕연/나기호/이중배
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Abstract
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We reviewed 14 patients922 hips) to whom had been performed total hip arthroplasty using CLW(CementLess weill, Protek(r), Swizerland)acetabular cup at the department of orthopaedic surgery, National Medical Center from February 1988 to August
1990.
The
purpose of this retrospective follow-up study was to analyze the radiological findings such as loosening or migration at the acetabular component and to assess the usefulness of the CLW cup. The CLW acetabular cup is made of self-tapping,
double-threaded anchoring ring with deep pitch and low profile and it is made of pure titanium with rough corundum blasted surface. The average age of the patients at operation was 49 year(23-62 years) and all were male. The mean follow-up period
was
6years and 3months(from 5years 2months to 7years 9months). The operation had been performed by a single surgeon(J-M Lee) using transgluteal approach. We analyzed the loosening and migration on the immediate postoperative and last follow-up plain
X-ray
film by Engh's criteria, which demonstrated no loosening and migration. While we need long term follow-up, we think that threaded cups which are well designed biomechanically and have good surface with bone on-growth capability should make
different
results compared to the poor results of other threaded cups.
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KEYWORD
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