Hip & pelvis

The Korean Hip Society (대한고관절학회)
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Results of Hip Arthroplasty Using a COREN Stem at a Minimum of Ten Years

  • Joon Soon Kang (Department of Orthopedic Surgery, Inha University Hospital) ;
  • Yoon Cheol Nam (Department of Orthopedic Surgery, Inha University Hospital) ;
  • Dae Gyu Kwon (Department of Orthopedic Surgery, Inha University Hospital) ;
  • Dong Jin Ryu (Department of Orthopedic Surgery, Inha University Hospital)
  • Received : 2022.08.10
  • Accepted : 2022.10.07
  • Published : 2022.12.31
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Abstract

Purpose: We report on the 10-year clinical hip function and radiologic outcomes of patients who underwent hip arthroplasty using a COREN stem. Materials and Methods: A consecutive series of 224 primary cementless hip arthroplasty implantations were performed using a COREN stem between 2009 and 2011; among these, evaluation of 128 hips was performed during a minimum follow-up period of 10 years. The mean age of patients was 65.4 years (range, 40-82 years) and the mean duration of follow-up was 10.8 years (range, 10-12 years). Evaluation of clinical hip function and radiologic implant outcomes was performed according to clinical score, thigh pain, and radiologic analysis. Results: Dramatic improvement of the mean Harris hip score (HHS) from 59.4 preoperatively to 93.5 was observed at the final follow-up (P≤0.01). Stable fixation was demonstrated for all implants with no change in position except for one case of Vancouver type B2 periprosthetic femur fracture. A radiolucent line (RLL) was observed in 16 hips (12.5%). Thigh pain was observed in only two hips (1.6%) at the final follow-up. There were no cases of osteolysis around the stem. The survival rate for the COREN stem was 97.7%. Conclusion: Good long-term survival with excellent clinical and radiological outcomes can be achieved using the COREN femoral stem regardless of Dorr type.

Keywords

Acknowledgement

This study was supported by an Inha University Research Grant.

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