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Posterior Glenohumeral Dislocation
Michael J. Tuite, MD
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KEY FACTS

  • Terminology

    • Imaging

      • Pathology

        • Diagnostic Checklist

          TERMINOLOGY

          • Synonyms

            • Posterior shoulder dislocation
          • Definitions

            • Posterior displacement of humeral head with loss of articulation with glenoid fossa
              • Less common than posterior subluxation or posterior instability without acute traumatic event

          IMAGING

          • General Features

            • Radiographic Findings

              • CT Findings

                • MR Findings

                  • Imaging Recommendations

                    DIFFERENTIAL DIAGNOSIS

                      PATHOLOGY

                      • General Features

                        • Staging, Grading, & Classification

                          CLINICAL ISSUES

                          • Presentation

                            • Demographics

                              • Natural History & Prognosis

                                • Treatment

                                  DIAGNOSTIC CHECKLIST

                                  • Consider

                                    • Image Interpretation Pearls

                                      • Reporting Tips

                                        Selected References

                                        1. Jacobs RC et al: Posterior shoulder dislocations. BMJ. 350:h75, 2015
                                        2. Liu X et al: Locked posterior shoulder dislocation associated with isolated fractures of the lesser tuberosity: a clinical study of 22 cases with a minimum of 2-year follow-up. J Orthop Trauma. 29(6):271-5, 2015
                                        3. Longo UG et al: Bone loss in patients with posterior gleno-humeral instability: a systematic review. Knee Surg Sports Traumatol Arthrosc. 24(2):612-7, 2014
                                        4. Rouleau DM et al: Acute traumatic posterior shoulder dislocation. J Am Acad Orthop Surg. 22(3):145-52, 2014
                                        5. Ilaslan H et al: Pseudoparalysis of shoulder caused by glenohumeral interposition of rotator cuff tendon stumps: a rare complication of posterior shoulder dislocation. Skeletal Radiol. 42(1):135-9, 2013
                                        6. Rainis CA et al: Capsule function following anterior dislocation: Implications for diagnosis of shoulder instability. J Orthop Res. 31(6):962-8, 2013
                                        7. Luenam S et al: Massive rotator cuff tear associated with acute traumatic posterior shoulder dislocation: report of two cases and literature review. Musculoskelet Surg. Epub ahead of print, 2012
                                        8. Rouleau DM et al: Incidence of associated injury in posterior shoulder dislocation: systematic review of the literature. J Orthop Trauma. 26(4):246-51, 2012
                                        9. Harish S et al: Imaging findings in posterior instability of the shoulder. Skeletal Radiol. 37(8):693-707, 2008
                                        10. Kowalsky MS et al: Traumatic posterior glenohumeral dislocation: classification, pathoanatomy, diagnosis, and treatment. Orthop Clin North Am. 39(4):519-33, viii, 2008
                                        11. Saupe N et al: Acute traumatic posterior shoulder dislocation: MR findings. Radiology. 248(1):185-93, 2008
                                        12. Chung CB et al: Humeral avulsion of the posterior band of the inferior glenohumeral ligament: MR arthrography and clinical correlation in 17 patients. AJR Am J Roentgenol. 183(2):355-9, 2004
                                        13. Cicak N: Posterior dislocation of the shoulder. J Bone Joint Surg Br. 86(3):324-32, 2004
                                        14. Hall FM: MR arthrography of the posterior labrocapsular complex. AJR Am J Roentgenol. 181(2):595; author reply 595-6, 2003
                                        15. Tung GA et al: MR arthrography of the posterior labrocapsular complex: relationship with glenohumeral joint alignment and clinical posterior instability. AJR Am J Roentgenol. 180(2):369-75, 2003
                                        16. Yu JS et al: The POLPSA lesion: MR imaging findings with arthroscopic correlation in patients with posterior instability. Skeletal Radiol. 31(7):396-9, 2002
                                        Related Anatomy
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                                        Related Differential Diagnoses
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                                        References
                                        Tables

                                        Tables

                                        KEY FACTS

                                        • Terminology

                                          • Imaging

                                            • Pathology

                                              • Diagnostic Checklist

                                                TERMINOLOGY

                                                • Synonyms

                                                  • Posterior shoulder dislocation
                                                • Definitions

                                                  • Posterior displacement of humeral head with loss of articulation with glenoid fossa
                                                    • Less common than posterior subluxation or posterior instability without acute traumatic event

                                                IMAGING

                                                • General Features

                                                  • Radiographic Findings

                                                    • CT Findings

                                                      • MR Findings

                                                        • Imaging Recommendations

                                                          DIFFERENTIAL DIAGNOSIS

                                                            PATHOLOGY

                                                            • General Features

                                                              • Staging, Grading, & Classification

                                                                CLINICAL ISSUES

                                                                • Presentation

                                                                  • Demographics

                                                                    • Natural History & Prognosis

                                                                      • Treatment

                                                                        DIAGNOSTIC CHECKLIST

                                                                        • Consider

                                                                          • Image Interpretation Pearls

                                                                            • Reporting Tips

                                                                              Selected References

                                                                              1. Jacobs RC et al: Posterior shoulder dislocations. BMJ. 350:h75, 2015
                                                                              2. Liu X et al: Locked posterior shoulder dislocation associated with isolated fractures of the lesser tuberosity: a clinical study of 22 cases with a minimum of 2-year follow-up. J Orthop Trauma. 29(6):271-5, 2015
                                                                              3. Longo UG et al: Bone loss in patients with posterior gleno-humeral instability: a systematic review. Knee Surg Sports Traumatol Arthrosc. 24(2):612-7, 2014
                                                                              4. Rouleau DM et al: Acute traumatic posterior shoulder dislocation. J Am Acad Orthop Surg. 22(3):145-52, 2014
                                                                              5. Ilaslan H et al: Pseudoparalysis of shoulder caused by glenohumeral interposition of rotator cuff tendon stumps: a rare complication of posterior shoulder dislocation. Skeletal Radiol. 42(1):135-9, 2013
                                                                              6. Rainis CA et al: Capsule function following anterior dislocation: Implications for diagnosis of shoulder instability. J Orthop Res. 31(6):962-8, 2013
                                                                              7. Luenam S et al: Massive rotator cuff tear associated with acute traumatic posterior shoulder dislocation: report of two cases and literature review. Musculoskelet Surg. Epub ahead of print, 2012
                                                                              8. Rouleau DM et al: Incidence of associated injury in posterior shoulder dislocation: systematic review of the literature. J Orthop Trauma. 26(4):246-51, 2012
                                                                              9. Harish S et al: Imaging findings in posterior instability of the shoulder. Skeletal Radiol. 37(8):693-707, 2008
                                                                              10. Kowalsky MS et al: Traumatic posterior glenohumeral dislocation: classification, pathoanatomy, diagnosis, and treatment. Orthop Clin North Am. 39(4):519-33, viii, 2008
                                                                              11. Saupe N et al: Acute traumatic posterior shoulder dislocation: MR findings. Radiology. 248(1):185-93, 2008
                                                                              12. Chung CB et al: Humeral avulsion of the posterior band of the inferior glenohumeral ligament: MR arthrography and clinical correlation in 17 patients. AJR Am J Roentgenol. 183(2):355-9, 2004
                                                                              13. Cicak N: Posterior dislocation of the shoulder. J Bone Joint Surg Br. 86(3):324-32, 2004
                                                                              14. Hall FM: MR arthrography of the posterior labrocapsular complex. AJR Am J Roentgenol. 181(2):595; author reply 595-6, 2003
                                                                              15. Tung GA et al: MR arthrography of the posterior labrocapsular complex: relationship with glenohumeral joint alignment and clinical posterior instability. AJR Am J Roentgenol. 180(2):369-75, 2003
                                                                              16. Yu JS et al: The POLPSA lesion: MR imaging findings with arthroscopic correlation in patients with posterior instability. Skeletal Radiol. 31(7):396-9, 2002