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1️⃣ PCL Tibial Attachment Anatomy and Bundle Locations
➡️ AL and PM Bundle Locations in the PCL
- The AL bundle is located in the superolateral aspect of the footprint.
- The PM bundle is in the inferomedial aspect of the PCL footprint.
- The most posterolateral aspect of the medial meniscus root typically marks the most anterior portion of the PCL.
Reference: J Knee Surg. 2021 Apr; 34(5):499-508
2️⃣ ALB and PMB of the PCL: Tibial Attachments
➡️ Tibial Attachment Area and Characteristics
- The ALB's tibial attachment area is 88 mm^2, bordered medially and posteriorly by the PMB.
- The PMB's tibial attachment area is approximately 105 mm^2 and more compact than the ALB, fanning out at its attachment.
Reference: Am J Sports Med. 2015 Dec; 43(12):3077-92
3️⃣ Tibial Bony Landmarks for PCL
➡️ Key Landmarks Identified on Lateral Radiographs
- The champagne-glass drop-off marks the transitional zone to the popliteus muscle.
- The bundle ridge separates the tibial attachment site of the ALB and PMB.
Reference: Am J Sports Med. 2015 Dec; 43(12):3077-92
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