Lateral Intercondylar Tubercle Of The Tibia, Anatomy

Description

Lateral intercondylar tubercle (tibial spine) rises from the superior tibial plateau within the intercondylar area, positioned between the medial and lateral tibial condyles and just anterior to the posterior intercondylar region. From this fixed proximal viewpoint, the tubercle reads as a pointed bony peak on the head of the tibia, with the lateral side set slightly lateral to the midline and adjacent to the articular surface that supports the lateral femoral condyle. The contour of the intercondylar eminence creates a bony ridge that separates the central nonarticular intercondylar region from the surrounding cartilage-bearing plateaus. Small structure, big implications. Orthopedic teaching often treats the intercondylar eminence as a single landmark, but the lateral intercondylar tubercle matters because it frames the tibial attachment region for the cruciate ligaments and anchors the central topography that guides arthroscopic orientation; loss of its normal profile alters how you judge the tibial footprint during ACL reconstruction and how you interpret post-reduction alignment after tibial spine injury. Avulsion fractures of the tibial spine (common in pediatric knees) can involve this lateral peak and are frequently discussed alongside ACL laxity on exam, while osteophyte formation along the intercondylar area can encroach on the intercondylar notch and correlate with extension loss in degenerative knee disease. Lighting and bone surface detail in this illustration make the peak, its margins, and the surrounding intercondylar area easy to parse against the broader proximal tibia. Use this illustration in gross anatomy and musculoskeletal anatomy courses to reinforce proximal tibial surface anatomy, and in orthopedic or sports medicine publications when labeling tibial plateau landmarks for ACL-related content, tibial spine fractures, or preoperative planning figures. It also fits radiology teaching files that correlate tibial eminence contours with CT or MRI of the knee joint. Anatomical accuracy verified by SciePro's Medical Advisory Board.