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KEY FACTS
Terminology
Imaging
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Posteromedial corner (PMC)
- Semimembranosus (SM)
- Posterior oblique ligament (POL)
Synonyms
- Semimembranosus corner injury
Definitions
- PMC of knee extends from posterior aspect of medial collateral ligament (MCL) to medial edge of posterior cruciate ligament (PCL)
- Prevents anteromedial rotatory instability of knee
- Major components
- SM muscle and tendon and its aponeurotic expansions
- POL
- Posteromedial aspect of medial meniscus
- Posteromedial joint capsule
IMAGING
General Features
Radiographic Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Joshi A et al: Weave technique for reconstruction of medial collateral ligament and posterior oblique ligament: an anatomic approach using semitendinosus tendon. Arthrosc Tech. 8(11):e1417-23, 2019
- Dold AP et al: The posteromedial corner of the knee: anatomy, pathology, and management strategies. J Am Acad Orthop Surg. 25(11):752-61, 2017
- Lundquist RB et al: Posteromedial corner of the knee: the neglected corner. Radiographics. 35(4):1123-37, 2015
- Geiger D et al: Posterolateral and posteromedial corner injuries of the knee. Radiol Clin North Am. 51(3):413-32, 2013
- Bonasia DE et al: Treatment of medial and posteromedial knee instability: indications, techniques, and review of the results. Iowa Orthop J. 32:173-83, 2012
- Hubert MG et al: Surgical treatment of acute and chronic anterior and posterior cruciate ligament and medial-side injuries of the knee. Sports Med Arthrosc. 19(2):104-9, 2011
- Tibor LM et al: Management of medial-sided knee injuries, part 2: posteromedial corner. Am J Sports Med. 39(6):1332-40, 2011
- Levy BA et al: Controversies in the treatment of knee dislocations and multiligament reconstruction. J Am Acad Orthop Surg. 17(4):197-206, 2009
- Lind M et al: Anatomical reconstruction of the medial collateral ligament and posteromedial corner of the knee in patients with chronic medial collateral ligament instability. Am J Sports Med. 37(6):1116-22, 2009
- House CV et al: Posteromedial corner injuries of the knee. Clin Radiol. 62(6):539-46, 2007
- Fanelli GC et al: Surgical treatment of acute medial collateral ligament and posteromedial corner injuries of the knee. Sports Med Arthrosc. 14(2):78-83, 2006
- Kurzweil PR et al: Physical examination and imaging of the medial collateral ligament and posteromedial corner of the knee. Sports Med Arthrosc. 14(2):67-73, 2006
- Robinson JR et al: The posteromedial corner revisited. An anatomical description of the passive restraining structures of the medial aspect of the human knee. J Bone Joint Surg Br. 86(5):674-81, 2004
- Loredo R et al: Posteromedial corner of the knee: MR imaging with gross anatomic correlation. Skeletal Radiol. 28(6):305-11, 1999
- Yao L et al: Avulsion of the posteromedial tibial plateau by the semimembranosus tendon: diagnosis with MR imaging. Radiology. 172(2):513-4, 1989
- Hughston JC et al: The role of the posterior oblique ligament in repairs of acute medial (collateral) ligament tears of the knee. J Bone Joint Surg Am. 55(5):923-40, 1973
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Posteromedial corner (PMC)
- Semimembranosus (SM)
- Posterior oblique ligament (POL)
Synonyms
- Semimembranosus corner injury
Definitions
- PMC of knee extends from posterior aspect of medial collateral ligament (MCL) to medial edge of posterior cruciate ligament (PCL)
- Prevents anteromedial rotatory instability of knee
- Major components
- SM muscle and tendon and its aponeurotic expansions
- POL
- Posteromedial aspect of medial meniscus
- Posteromedial joint capsule
IMAGING
General Features
Radiographic Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Joshi A et al: Weave technique for reconstruction of medial collateral ligament and posterior oblique ligament: an anatomic approach using semitendinosus tendon. Arthrosc Tech. 8(11):e1417-23, 2019
- Dold AP et al: The posteromedial corner of the knee: anatomy, pathology, and management strategies. J Am Acad Orthop Surg. 25(11):752-61, 2017
- Lundquist RB et al: Posteromedial corner of the knee: the neglected corner. Radiographics. 35(4):1123-37, 2015
- Geiger D et al: Posterolateral and posteromedial corner injuries of the knee. Radiol Clin North Am. 51(3):413-32, 2013
- Bonasia DE et al: Treatment of medial and posteromedial knee instability: indications, techniques, and review of the results. Iowa Orthop J. 32:173-83, 2012
- Hubert MG et al: Surgical treatment of acute and chronic anterior and posterior cruciate ligament and medial-side injuries of the knee. Sports Med Arthrosc. 19(2):104-9, 2011
- Tibor LM et al: Management of medial-sided knee injuries, part 2: posteromedial corner. Am J Sports Med. 39(6):1332-40, 2011
- Levy BA et al: Controversies in the treatment of knee dislocations and multiligament reconstruction. J Am Acad Orthop Surg. 17(4):197-206, 2009
- Lind M et al: Anatomical reconstruction of the medial collateral ligament and posteromedial corner of the knee in patients with chronic medial collateral ligament instability. Am J Sports Med. 37(6):1116-22, 2009
- House CV et al: Posteromedial corner injuries of the knee. Clin Radiol. 62(6):539-46, 2007
- Fanelli GC et al: Surgical treatment of acute medial collateral ligament and posteromedial corner injuries of the knee. Sports Med Arthrosc. 14(2):78-83, 2006
- Kurzweil PR et al: Physical examination and imaging of the medial collateral ligament and posteromedial corner of the knee. Sports Med Arthrosc. 14(2):67-73, 2006
- Robinson JR et al: The posteromedial corner revisited. An anatomical description of the passive restraining structures of the medial aspect of the human knee. J Bone Joint Surg Br. 86(5):674-81, 2004
- Loredo R et al: Posteromedial corner of the knee: MR imaging with gross anatomic correlation. Skeletal Radiol. 28(6):305-11, 1999
- Yao L et al: Avulsion of the posteromedial tibial plateau by the semimembranosus tendon: diagnosis with MR imaging. Radiology. 172(2):513-4, 1989
- Hughston JC et al: The role of the posterior oblique ligament in repairs of acute medial (collateral) ligament tears of the knee. J Bone Joint Surg Am. 55(5):923-40, 1973
