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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Clinical Issues
TERMINOLOGY
Abbreviations
- Multidirectional instability (MDI)
- AMBRII (mnemonic for MDI features)
- Atraumatic
- Multidirectional
- Bilateral
- Rehabilitation is usual treatment
- Inferior capsule: If surgery, capsule is tightened
- Interval (rotator) is also tightened/reconstructed if surgery
Synonyms
- Recurrent atraumatic instability
Definitions
- Pain from excessive anterior, posterior, and inferior humeral head translation without labral tear
IMAGING
General Features
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Reporting Tips
Selected References
- Longo UG et al: Multidirectional instability of the shoulder: a systematic review. Arthroscopy. 31(12):2431-43, 2015
- Burt DM: Arthroscopic repair of inferior labrum from anterior to posterior lesions associated with multidirectional instability of the shoulder. Arthrosc Tech. 3(6):e727-30, 2014
- Schaeffeler C et al: MR arthrography including abduction and external rotation images in the assessment of atraumatic multidirectional instability of the shoulder. Eur Radiol. 24(6):1376-85, 2014
- Lee HJ et al: Multidirectional instability of the shoulder: rotator interval dimension and capsular laxity evaluation using MR arthrography. Skeletal Radiol. 42(2):231-8, 2013
- von Eisenhart-Rothe R et al: Simultaneous 3D assessment of glenohumeral shape, humeral head centering, and scapular positioning in atraumatic shoulder instability: a magnetic resonance-based in vivo analysis. Am J Sports Med. 38(2):375-82, 2010
- Provencher MT et al: An analysis of the rotator interval in patients with anterior, posterior, and multidirectional shoulder instability. Arthroscopy. 24(8):921-9, 2008
- Kim SH et al: Loss of chondrolabral containment of the glenohumeral joint in atraumatic posteroinferior multidirectional instability. J Bone Joint Surg Am. 87(1):92-8, 2005
- Inui H et al: Three-dimensional relationship of the glenohumeral joint in the elevated position in shoulders with multidirectional instability. J Shoulder Elbow Surg. 11(5):510-5, 2002
- Levine WN et al: Treatment of the athlete with multidirectional shoulder instability. Orthop Clin North Am. 32(3):475-84, 2001
- An YH et al: Multidirectional instability of the glenohumeral joint. Orthop Clin North Am. 31(2):275-85, 2000
Related Anatomy
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Clinical Issues
TERMINOLOGY
Abbreviations
- Multidirectional instability (MDI)
- AMBRII (mnemonic for MDI features)
- Atraumatic
- Multidirectional
- Bilateral
- Rehabilitation is usual treatment
- Inferior capsule: If surgery, capsule is tightened
- Interval (rotator) is also tightened/reconstructed if surgery
Synonyms
- Recurrent atraumatic instability
Definitions
- Pain from excessive anterior, posterior, and inferior humeral head translation without labral tear
IMAGING
General Features
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Reporting Tips
Selected References
- Longo UG et al: Multidirectional instability of the shoulder: a systematic review. Arthroscopy. 31(12):2431-43, 2015
- Burt DM: Arthroscopic repair of inferior labrum from anterior to posterior lesions associated with multidirectional instability of the shoulder. Arthrosc Tech. 3(6):e727-30, 2014
- Schaeffeler C et al: MR arthrography including abduction and external rotation images in the assessment of atraumatic multidirectional instability of the shoulder. Eur Radiol. 24(6):1376-85, 2014
- Lee HJ et al: Multidirectional instability of the shoulder: rotator interval dimension and capsular laxity evaluation using MR arthrography. Skeletal Radiol. 42(2):231-8, 2013
- von Eisenhart-Rothe R et al: Simultaneous 3D assessment of glenohumeral shape, humeral head centering, and scapular positioning in atraumatic shoulder instability: a magnetic resonance-based in vivo analysis. Am J Sports Med. 38(2):375-82, 2010
- Provencher MT et al: An analysis of the rotator interval in patients with anterior, posterior, and multidirectional shoulder instability. Arthroscopy. 24(8):921-9, 2008
- Kim SH et al: Loss of chondrolabral containment of the glenohumeral joint in atraumatic posteroinferior multidirectional instability. J Bone Joint Surg Am. 87(1):92-8, 2005
- Inui H et al: Three-dimensional relationship of the glenohumeral joint in the elevated position in shoulders with multidirectional instability. J Shoulder Elbow Surg. 11(5):510-5, 2002
- Levine WN et al: Treatment of the athlete with multidirectional shoulder instability. Orthop Clin North Am. 32(3):475-84, 2001
- An YH et al: Multidirectional instability of the glenohumeral joint. Orthop Clin North Am. 31(2):275-85, 2000
