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KMID : 0858520130170010026
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Journal of the Korean Society of Magnetic Resonance in Medicine
2013 Volume.17 No. 1 p.26 ~ p.32
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Hill-Sachs Lesion on MR Arthrography of the Shoulder: Relationship with Bankart Lesion on Arthroscopy and Frequency of Shoulder Dislocations
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Kim Ji-Na
Lee Min-Hee
Ahn Joong-Mo
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Abstract
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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.
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KEYWORD
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Shoulder, MR arthrography, Trauma, Hill-Sachs lesion, Bankart lesion
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