A retrospective clinical follow-up study was performed with clinical adn radiological results of seventy total hip arthroplasties using CLS.
Stem with minimum two-year follow-up (average 4. 6 years). These included fiftyseven patients(forty-eight men, nine women), average age was forty-six. Most common indication was osteonerosis, idiopathic and traumatic, 65.7 percent. 25 Well
threded
cups,
20 bipolar cups, 20 expansion cups, and 5 hemispherical cups were used ad an acetabular component.
Clinical evaluation revealed average Harris hip score 94.6, mild thigh pain in 2 hips(2.9%) and intermittent groin pain in 3 bipolar hips(4.3%).
Radiological evaluation revealed that mild carlcar atrophy developed in 33 hips(47.1%), cortical hypertrophy in 28 hips(40.0%). Significant radiolucent line in 2 of femoral components(2.9%) and in 1 of acetabular component(2.0%) and in 2 of
acetabular
component(2.9%) and in 2 of acetabular component(48.6%), focal osteolysis, in 3 hips(4.3%), varus shift, in 4 hips(5.7%) and subsidence, in 2 hips. Perioperative complicatlons were 5 femoral splittings(7.1%) developed during the operation and 1
deep
vein thrombosis(1.4%). Late postoperative complications were heterotrophic ossification in 3hips(4.3%) and trochanteric nonunion in 2 hips (2.9%).
We conclded that the clinical results of total hip arthroplasty with CLS stem were encouraging both clinically and radiologically. And these patients should be followed for more time period to evaluate appropriately.
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