LONG-TERM RESULTS OF ENHANCED TAPERED STEM VerSys ET USE IN PRIMARY TOTAL HIP ARTHROPLASTY

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Abstract

The authors reported the outcome at a minimum of five years of 130 consecutive arthroplasties of VerSys ET (Zimmer) in 111 patients. The procedures were performed between 2001 and 2004. In 129 cases (99.2%) Trilogy cup (Zimmer) was used in one case - Muller's acetabular cage (Mathys). The mean age of patients was 49.5 (SD 11.5) (23 to 73), male 76 (58.5%), female - 54 (41.5%), overweight patients 109 (83.8%). Majority of patients had activity in Charnley class A. The most frequent was femur Dorr type A (27,0%) and Dorr type В (66,1%). The mean follow-up was 76 months (60 to 96). The outcomes assessed in 103 patients (120 hips) (92.3%). Outcomes of ten cases were not determined. The mean Harris Hip score improves from 35.1 (SD 8.3) preoperatively to 94.3 (SD 8.5) post-operatively. Kaplan-Meier analysis with revision of the stem as the end-point demonstrated 97,7% survival in term 60 to 96 months, for aseptic loosening - 99,2%. Subsidence of the implants in 61 (50.8%) patients was fixed at a mean follow-up 18.3 (SD3.7) months after surgery and did not progress further. After surgery stem position was neutral 91(75.8%) patients, varus - 14 (12.1%) and valgus - 14 (12.1%). Complications were observed in 8 (6.7%) cases: among them - periprosthetic fractures 6 (5.0%), stem aseptic loosening - 1 (0.8%), recurrent dislocation - 1 (0.8%). Four patients undergone revision surgery We consider the high efficiency of VerSys ET stem use for primary total hip arthroplasty.

About the authors

R. M. Tikhilov

ГУ Российский научно-исследовательский институт травматологии и ортопедии им. P.P. Вредена Росмедтехнологий

Email: fake@neicon.ru
д.м.н., профессор, директор Россия

V. M. Shapovalov

Военно медицинская академия им. СМ. Кирова

Email: fake@neicon.ru
д.м.н., профессор, зав. кафедрой военной травматологии и ортопедии Россия

I. I. Artyukh

ГУ Российский научно-исследовательский институт травматологии и ортопедии им. P.P. Вредена Росмедтехнологий

Author for correspondence.
Email: info@rniito.org
к.м.н., ученый секретарь Россия

V. A. Shubnyakov

Военно медицинская академия им. СМ. Кирова

Email: artukhva@mail.ru
к.м.н., преподаватель кафедры военной травматологии и ортопедии Россия

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