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📌Posterior Oblique Ligament (POL)
- The POL is functionally distinct from the Medial Collateral Ligament (MCL) and is the most frequently injured structure of the Posteromedial Corner (PMC).
✅ Anatomy of the POL
- The POL originates proximally just behind and slightly inferior to the proximal origin of the superficial MCL (sMCL). It runs obliquely posteriorly and caudally to insert at the meniscus and the proximal tibia. Additionally, it connects to the semimembranosus, the oblique popliteal ligament (OPL), and the posteromedial capsule.
✅ Major Injury Patterns to the PMC
- POL Injury with Capsular Arm Involvement: Involves the capsular arm of the semimembranosus tendon (70%).
- POL Injury with Meniscal Detachment: Involves complete peripheral meniscal detachment (30%).
- Combined POL Injury: Includes disruption of the semimembranosus tendon and peripheral meniscal detachment (19%).
✅ Common Disruptions in Complex Knee Injuries
- Disruptions of the distal POL are frequent in complex knee injuries, notably in association with the oblique popliteal ligament, medial collateral ligament, and semimembranosus tendon tears.
Semin Musculoskelet Radiol. 2016 Feb;20(1):12-25
J Am Acad Orthop Surg. 2017 Nov;25(11):752-761
Skeletal Radiol. 2022 May;51(5):1063-1071
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
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#PMC, #POL, #Posteriorobliqueligament, #kneeMRI, #ACLtear, #MCLinjury, #AMRI, #kneeinstability
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