Cementless Total Hip Arthroplasty Using VerSys Fiber Metal Midcoat Stem: a Minimum 3-Years Follow-up

Ju Hyung Yoo; Sung-Guk Kim; Chang-Dong Han; Hyun Chul Oh; Han Kook Yoon

doi:10.5371/jkhs.2010.22.1.45

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Yoo, Kim, Han, Oh, and Yoon: Cementless Total Hip Arthroplasty Using VerSys Fiber Metal Midcoat Stem: a Minimum 3-Years Follow-up

Original Article

The Journal of the Korean Hip Society

The Journal of the Korean Hip Society 2010; 22(1): 45-51.

Published online: 31 March 2010

DOI: https://doi.org/10.5371/jkhs.2010.22.1.45

Cementless Total Hip Arthroplasty Using VerSys Fiber Metal Midcoat Stem: a Minimum 3-Years Follow-up

Ju Hyung Yoo, MD, Sung-Guk Kim, MD, Chang-Dong Han, MD^*, Hyun Chul Oh, MD, Han Kook Yoon, MD

Department of Orthopedic Surgery, National Health Insurance Corporation Ilsan Hospital, Ilsan, Korea.

^*Department of Orthopedic Surgery, College of Medicine, Yonsei University, Seoul, Korea.

Address reprint request to Han Kook Yoon, MD. Department of Orthopaedic Surgery, National Health Insurance Corporation Ilsan Hospital, 1232 Baekseok-dong, Ilsan-gu, Goyang 411-360, Korea. TEL: +82-31-900-0540, FAX: +82-31-900-0343, hangugy@hanmail.net

Received 27 July 2009 Revised 20 October 2009 Accepted 30 November 2009

Abstract

Purpose

The purpose of this study was to retrospectively evaluate the results of cementless total hip arthroplasties that used a Versys fiber metal midcoat femoral stem.

Materials and Methods

From March 2000 to June 2005, 28 cases in 23 patients were followed up for a minimum of three years. The average follow up period was 5.1 years. Clinical results were evaluated by Harris hip scores. Radiographic analysis was done by evaluating fixation stability, osteolysis, stress shielding, and cortical hypertrophy.

Results

The mean Harris hip score improved from 43.1 to 93.8 at the last follow up. In radiographic analyses of the stem, there was no evidence of positional changes or vertical subsidence. There was heterotopic ossification in four, distal cortical hypertrophy in two, proximal stress shielding in twenty, and femoral osteolysis in five cases. The femoral stem revealed a stable bony ingrowth in all. The acetabular cup revealed a stable bony ingrowth in all. There was no evidence of horizontal or vertical migration or of a change of inclination angle of the acetabular cup.

Conclusion

Cementless total hip arthroplasty using a Versys fiber metal midcoat femoral stem showed good clinical and radiologic results, but long term follow up is needed.

Keywords: Total hip arthroplasty, Cementless, VerSys fiber metal midcoat femoral stem

Figures and Tables

Fig. 1

Anteroposterior radiographs were taken (A) at the immediate postoperation and (B) 4 years later after total hip arthroplasty showing endosteal spot weld (arrow head) and grade 1 proximal stress shield (white arrow).

Fig. 2

Anteroposterior radiographs were taken (A) 2weeks later and (B) 6 years later after total hip arthroplasty showing the formation of heterotophic ossification (arrow head) and radiolucent line at Gruen zone 3, 4 and 5 (white arrow).

Table 1

Demographies of the Patients

Table 2

Component Used in Total Hip Arthroplasty

Table 3

Results of Harris Hip Score at the Last Follow-up

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