Hip & pelvis

The Korean Hip Society (대한고관절학회)
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Traumatic Disassembly of a Bipolar Hip Prosthesis - A Case Report -

이극성 인공 고관절물의 외상성 분리 - 증례 보고 -

  • Park, Bong-Ju (Department of Orthopedic Surgery, Gwangju Veterans Hospital) ;
  • Kim, Ju-Oh (Department of Orthopedic Surgery, Gwangju Veterans Hospital) ;
  • Cho, Hong-Man (Department of Orthopedic Surgery, Gwangju Veterans Hospital) ;
  • Sim, Joo-Hyun (Department of Orthopedic Surgery, Gwangju Veterans Hospital)
  • 박봉주 (광주 보훈병원 정형외과) ;
  • 김주오 (광주 보훈병원 정형외과) ;
  • 조홍만 (광주 보훈병원 정형외과) ;
  • 심주현 (광주 보훈병원 정형외과)
  • Published : 2011.06.30
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Abstract

We report a rare case of a complete disassembly of the inner head from the bipolar cup without polyethylene wear and locking system failure. An 84-year-old man who had a femur neck fracture of the right hip underwent a replacement of the bipolar prosthesis 4 months ago. He fell down from a height of a chair and felt a sudden sharp pain in the right hip. Roentgenograms revealed that the inner head was dislocated from the outer cup; subsequently, a revision surgery was carried out. When the outer head was removed from the acetabulum, the bearing insert and locking ring were not deformed. Because there was no evidence of loosening of the femoral stem, identicallysized bipolar cup and metal head replacement was performed. At a 6 months follow-up, he had mild hip pain but had returned fully to daily living.

폴리에틸렌의 마모나 잠금 장치의 파손 없이 발생한 이극성 인공 고관절물의 분리를 보고하고자 한다. 84세 남자 환자로 4개월 전 우측 고관절의 대퇴 경부 골절로 본원에서 인공 고관절 반치환술을 시행 받은 환자로, 의자 높이에서 넘어지며 발생한 고관절의 통증으로 내원하였다. 시행한 방사선학적 검사상 이극성 컵으로부터 인공 대퇴 골두가 완전히 분리되어 있는 소견을 보였다. 대퇴 주대에는 해리를 의심할 만한 소견을 보이지 않아 같은 크기의 이극성 컵과 인공 대퇴 골두로 재 치환술을 시행하였으며, 제거된 이극성 컵에서 분리를 일으킬만한 폴리에틸렌의 마모나 잠금 장치의 파손은 관찰 되지 않았다. 재 치환술 후 6개월 추시에서 환자는 경미한 고관절의 통증을 호소하나 일상 생활에 많은 제한을 보이지는 않았다.

Keywords

References

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