Hip Pelvis.  2015 Jun;27(2):83-89. 10.5371/hp.2015.27.2.83.

Long-term Outcome of Polished Stems in Total Hip Arthroplasty

• Park JY
• Han HJ
• Baik SJ
• Kweon SH

• KMID: 1974385
• DOI: http://doi.org/10.5371/hp.2015.27.2.83

Abstract

PURPOSE
The purpose of this study was to evaluate the clinical outcomes and radiologic findings of primary total hip arthroplasty (THA) using cemented polished femoral stems.
MATERIALS AND METHODS
We retrospectively reviewed 91 hips (91 patients) that had undergone primary THA with cemented polished femoral stems who were followed for at least 10 years. The mean age at surgery was 57 years (47-75 years). Mean follow up period was 12.8 years (10.1-14.0 years). Harris Hip Score (HHS) was used for clinical evaluation. Radiologic evaluation was focused on cementing technique including subsidence within the cement mantle, radiolucent lines at the cement-bone or cement-stem interface, cortical hypertrophy, and calcar resorption.
RESULTS
The average HHS was 55.2 points before the surgery that improved to an average of 93.2 points at the final follow-up. According to Barrack classification, there were 50, 32, and 9 cases in A, B, and C grades, respectively. Subsidence of femoral stem was less than 2 mm except in one patient. There were no progressing radiolucent line or loosening of the femoral stem.
CONCLUSION
In this study, THA using cemented polished femoral stems was found to have favorable outcomes in long term follow-up.

Keyword

Polished femoral stem; Osteolysis; Cement technique

MeSH Terms

Arthroplasty, Replacement, Hip*
Classification
Follow-Up Studies
Hip
Humans
Hypertrophy
Methods
Osteolysis
Retrospective Studies

Figure

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  Fig. 1 Exter® femoral stem (Howmedica International Ltd. London, UK).

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  Fig. 2 Radiologic parameters about subcidence of femoral stem (red arrows at the proximal femoral shoulder and red lines in the distal centralizer).

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  Fig. 3 (A) This anteroposterior radiography shows Legg-Calve-Perthes disease sequalae of femoral head in a 58-year-old male. (B) The postoperative radiography shows good cement mantle (Barrck grade A). (C) After 12.4 years, the radiography shows subsidence less than 1 mm of femoral stem and no osteolysis around acetabular and femoral component.

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  Fig. 4 At the mean follow-up (F/U) 12.8 years, the survival rate was 84.6% by Kaplan-Meier. THA, total hip arthroplasty.

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