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
Related Anatomy
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Related Differential Diagnoses
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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
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