Deep part of tibial collateral ligament
Pars profunda ligamenti collateralis tibialis
- Synonym: Deep part of medial collateral ligament of knee
- Acronym: dMCL
- Related terms: Deep part of medial collateral ligament
Definition
The deep part of the tibial collateral ligament (deep medial collateral ligament; dMCL) is a key stabilizer of the medial knee. Anatomically, the dMCL consists of two distinct portions: the meniscofemoral and meniscotibial ligaments.
The meniscofemoral portion attaches to the femur just distal and posterior to the medial epicondyle, approximately 6 mm distal and 5 mm posterior to the medial epicondyle.
The meniscotibial portion attaches to the tibia, fanning out anterodistally to a wide attachment site. This tibial attachment is located about 8 mm below the tibial plateau and spans between 17 and 39 mm anteroposteriorly.
References
1.The Bone Attachments of the Medial Collateral and Posterior Oblique Ligaments Are Defined Anatomically and Radiographically.Athwal KK, Willinger L, Shinohara S, et al.Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA. 2020;28(12):3709-3719. doi:10.1007/s00167-020-06139-6.
2.The Anatomy of the Medial Part of the Knee.LaPrade RF, Engebretsen AH, Ly TV, et al.The Journal of Bone and Joint Surgery. American Volume. 2007;89(9):2000-10. doi:10.2106/JBJS.F.01176.
