Tibia

 

  1. Upper End
    1. Tibial Plateau

         Presents two smooth and concave articular facets

         The medial facet, oval in shape, is slightly concave from side to side, and from front to back.

         The lateral, nearly circular, is concave from side to side.

         The central portions of these facets articulate with the condyles of the femur.

         Their peripheral portions support the menisci of the knee-joint.

         Between the articular facets, closer to the posterior than the anterior aspect of the bone, are the intercondylar eminences.

          

    1. Medial Condyle

         Presents posteriorly a deep transverse groove, for the insertion of the tendon of the Semimembranosus.

         Its medial surface is convex, rough, and prominent; it gives attachment to the medial collateral ligament.

 

    1. Lateral Condyle

         Presents posteriorly a flat articular facet, nearly circular in form, directed downward, backward, and lateral, for articulation with the head of the fibula.

         Its lateral surface is convex, rough, and prominent in front.

 

    1. Tibial Tubercle

         The anterior surfaces of the condyles.

         Attachment of ligamentum patella (patellar tendon)

 

    1. Gerdyís Tubercle

         On the lateral condyle is an eminence, situated on a level with the upper border of the tuberosity and at the junction of its anterior and lateral surfaces, for the attachment of the iliotibial band.

 

    1. Intercondylar Tubercles

         Between the articular facets, closer to the posterior than the anterior aspect of the bone, is the intercondylar eminences

 

  1. Shaft

 

  1. Lower End

 

    1. Fibular Notch

         The lateral surface presents a triangular rough depression for the attachment of the inferior interosseous ligament connecting it with the fibula.

         The lower part of this depression is smooth, covered with cartilage and articulates with the fibula.

 

    1. Medial Malleolus

         The medial surface of this process is convex and subcutaneous.

         Itís lateral or articular surface is smooth and slightly concave, and articulates with the talus.

         Its anterior border is rough, for the attachment of the anterior fibers of the deltoid ligament of the ankle-joint.

 

    1. Groove for Tibialis Posterior

         The posterior border of medial malleolus presents a broad groove.

         The groove lodges the tendons of the tibialis posterior and flexor digitorum longus.