Investigative Magnetic Resonance Imaging

Korean Society of Magnetic Resonance in Medicine (대한자기공명의과학회)
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Hill-Sachs Lesion on MR Arthrography of the Shoulder: Relationship with Bankart Lesion on Arthroscopy and Frequency of Shoulder Dislocations

견관절자기공명관절조영술에서의 Hill-Sachs병변과 관절경에서의 Bankart병변, 견관절탈구빈도와의 상관성

  • Kim, Ji Na (Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Lee, Min Hee (Department of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine) ;
  • Ahn, Joong Mo (Department of Radiology, University of Pittsburgh Medical Center)
  • 김지나 (성균관의대 강북삼성병원 영상의학과) ;
  • 이민희 (성균관의대 강북삼성병원 영상의학과) ;
  • 안중모 (미국 피츠버그대학병원 영상의학과)
  • Received : 2013.01.04
  • Accepted : 2013.03.13
  • Published : 2013.04.30
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Abstract

Purpose : This study was performed to evaluate the presence and severity of Hill-Sachs (HS) lesions on MR arthrography (MRA) of shoulder in patients with Bankart lesions following anterior dislocation and to investigate their relationship with Bankart lesions and frequency of dislocations. Materials and Methods: 86 MRA of shoulder were evaluated in patients with arthroscopic Bankart repairs following anterior dislocations. The largest surface length of HS lesion on MRA and extent of Bankart lesions on arthroscopy were measured. Relationships between length of HS lesions and extent of Bankart lesions and frequency of dislocations were assessed. Results: HS lesions were identified on MRA in 78 patients. The largest surface length of HS lesion ranged from 9.3 mm to 29.6 mm (mean, 18.8 mm). The extent of Bankart lesion ranged from one to six o'clock extent (mean, 4.25 o'clock extent). Three patients had single dislocation and the other 75 patients had recurrent dislocations (mean 24.5 times). The largest surface length of HS lesions was positively correlated with extent of Bankart lesions (p = 0.001, r = 0.37), but not with frequency of dislocation. Conclusion: HS lesion was very common in patients with Bankart lesion. The severity of HS lesions was correlated with extent of Bankart lesions.

목적: 견관절 전방탈구 후 Bankart 병변이 있었던 환자의 자기공명관절조영술 (MRA)에서 Hill-Sachs (HS) 병변의 유무와 정도를 평가하고, 이를 관절경에서 보인 Bankart 병변의 크기와 탈구 빈도와 비교하고자 하였다. 대상과 방법: 견관절 전방탈구 후 발생한 Bankart 병변의 관절경 수술을 시행 받은 86명의 MRA를 분석하였다. MRA에서 HS 병변의 가장 큰 표면길이와, 관절경에서 보인 Bankart 병변의 크기를 측정하였다. HS 병변 길이와 Bankart 병변 크기, 탈구 빈도 사이의 상관성을 분석하였다. 결과: HS 병변은 78명에서 관찰되었다. HS 병변의 가장 긴 표면길이는 평균 18.8 mm (9.3 - 29.6 mm) 였고, Bankart 병변은 평균 4.25시계구간 크기 (1-6시계구간 크기) 였다. 3명은 단일탈구, 75명은 재발탈구였다. HS 병변의 크기는 Bankart 병변의 크기와 유의한 양의 상관관계를 보였고 (p = 0.001, r = 0.37), 탈구 빈도와는 관련성이 없었다. 결론: HS 병변은 Bankart 병변이 있는 환자에서 흔하게 발견되었다. HS 병변과 Bankart 병변의 크기와 유의한 양의 상관관계를 보였다.

Keywords

References

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