Topics

Topic

design image
Medial tibial plateau

The medial tibial plateau forms the upper medial articular surface of the tibia, contributing to the knee joint. It is larger, oval, and more concave compared to the lateral plateau, reflecting its role in weight-bearing and stability. It articulates with the medial femoral condyle and is covered by articular cartilage. The plateau supports important ligamentous, capsular, and meniscal attachments, making it a critical structure in knee biomechanics and pathology.

Synonyms

  • Medial tibial condyle (articular surface)

  • Medial plateau of tibia

  • Superior medial surface of tibia

Muscular Attachments

  • Pes anserinus (anteromedial tibia just below plateau): Sartorius, gracilis, semitendinosus

  • Semimembranosus: Inserts on posterior aspect, sending expansions to posterior oblique ligament and medial meniscus

  • Popliteus expansions: Related posteriorly via capsular attachments

  • Though no direct muscular insertion on the articular plateau itself, periarticular soft tissue attachments make it functionally important

Relations

  • Superiorly: Articulates with the medial femoral condyle

  • Inferiorly: Medullary cavity of tibia and trabecular bone

  • Anteriorly: Tibial tuberosity (inferior), patellar tendon, pes anserinus tendons

  • Posteriorly: Posterior horn of medial meniscus, semimembranosus tendon, posterior capsule

  • Medially: Medial collateral ligament (MCL)

  • Laterally: Intercondylar eminence, medial meniscus attachment

Function

  • Provides stable articulation for the medial femoral condyle

  • Bears greater load than lateral plateau due to body weight transmission

  • Serves as attachment site for stabilizing structures (meniscus, capsule, tendons)

  • Maintains congruence of the knee joint and resists shear/rotational forces

Clinical Significance

  • Fractures: Tibial plateau fractures frequently involve the medial plateau (Schatzker types IV–VI), important for surgical planning

  • Arthritis: Weight-bearing predisposes it to early degenerative changes and osteoarthritis

  • Meniscal pathology: Medial meniscus attaches firmly here, making it more prone to tears

  • Ligamentous injuries: MCL and posterior capsule intimately related, critical in valgus injuries

  • Imaging: Marrow signal, cortical outline, and cartilage surface must be evaluated for subtle pathology

MRI Appearance

T1-weighted images:

  • Marrow shows intermediate to bright signal intensity depending on fatty content

  • Cortical bone: dark (low signal)

  • Articular cartilage: intermediate signal

T2-weighted images:

  • Marrow shows intermediate to bright signal intensity

  • Fluid (effusion, edema, cysts) appears bright

  • Cortical bone remains dark

STIR (Short Tau Inversion Recovery):

  • Normal marrow shows low signal

  • Pathologic marrow (edema, fracture, contusion, infection, tumor) appears bright

Proton Density Fat-Saturated (PD FS):

  • Marrow normally low signal

  • Pathologic marrow changes (edema, trauma, inflammation) appear bright

  • Meniscus and cartilage visualized clearly against suppressed fat

T1 Fat-Sat Post-Contrast:

  • Normal marrow enhances mildly and diffusely

  • Pathology (infection, tumor, synovitis) shows focal or heterogeneous enhancement

  • Osteomyelitis or tumor infiltration: abnormal intense enhancement

CT Appearance

Non-Contrast CT:

  • Plateau cortex appears as dense high attenuation bone

  • Marrow appears as lower density trabecular structure

  • Excellent for detecting fractures, cortical irregularity, or sclerosis

Post-Contrast CT:

  • Normal marrow enhances minimally

  • Pathologic enhancement (infection, tumor, inflammation) appears as heterogeneous or focal enhancement

  • Hemarthrosis, effusions, or fracture lines better outlined

MRI image

medial tibial plateau axial cross sectional anatomy 3T MRI AI enhanced radiology anatomy image-img-00000-00000

MRI image

medial tibial plateau coronal cross sectional anatomy 3T MRI AI enhanced radiology anatomy image-img-00000-00000

CT image

medial tibial plateau ct coronal image

CT image

medial tibial plateau ct sag