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Content: 00:00 Introduction & Content 00:41 Tibia Anatomy 00:52 Proximal Tibia 02:58 Shaft/body of Tibia 04:31 Distal Tibia 05:41 Fibula Anatomy 05:51 Proximal Fibula 06:58 Shaft/body of Fibula 07:51 Distal Fibula 08:38 How are the Tibia and Fibula held together? 08:48 Superior Tibiofibular Joint 09:05 Interosseous Membrane 09:20 Distal tibiofibular joint 09:35 Outro & Next topic ------------------ 🫀Help me make more free educational content: / @taimtalksmed 📲Other Links: Website: https://taimtalksmed.com/ Instagram: / taimtalksmed Discord: / discord ------------------- This video covers the anatomy of the lower leg bones – the tibia and fibula. Each structure is explained with landmarks, joint connections, muscle attachments, and clinical relevance. --- TIBIA (Tibia) Proximal End Medial condyle (condylus medialis) – articulates with medial femoral condyle Lateral condyle (condylus lateralis) – articulates with lateral femoral condyle Superior articular surfaces – support femoral condyles Intercondylar eminence (eminentia intercondylaris) – separates intercondylar areas Anterior intercondylar area (area intercondylaris anterior) – attachment for ACL, anterior horns of menisci Posterior intercondylar area (area intercondylaris posterior) – attachment for PCL, posterior horns of menisci Articular facet for fibula – forms proximal tibiofibular joint Tuberosity for iliotibial tract – insertion for iliotibial band Shaft Tibial tuberosity (tuberositas tibiae) – insertion for patellar ligament Anterior border (margo anterior) – sharp, subcutaneous "shin" Medial border (margo medialis) Interosseous border (margo interosseus) – attachment for interosseous membrane Medial surface (facies medialis) – subcutaneous surface Lateral surface (facies lateralis) – origin for tibialis anterior Posterior surface (facies posterior) – origin for flexor muscles Soleal line (linea musculi solei) – origin of soleus and fascial separation Distal End Medial malleolus (malleolus medialis) – supports ankle joint, attachment for deltoid ligament Articular facet of medial malleolus – articulates with talus Inferior articular surface (facies articularis inferior) – articulates with talus Malleolar groove (sulcus malleolaris) – guides flexor tendons Fibular notch (incisura fibularis) – anchors fibula via tibiofibular syndesmosis --- FIBULA (Fibula) Proximal End Apex of head (apex capitis fibulae) Head of fibula (caput fibulae) – articulates with tibia, muscle and ligament attachment Articular facet of fibular head – part of superior tibiofibular joint Neck of fibula (collum fibulae) – common fibular nerve crosses here Shaft Anterior border (margo anterior) Posterior border (margo posterior) Interosseous crest (crista interossea) – attachment for interosseous membrane Medial surface (facies medialis) – muscle origin Lateral surface (facies lateralis) – origin of fibularis muscles Posterior surface (facies posterior) – origin of tibialis posterior and flexor hallucis longus Distal End Lateral malleolus (malleolus lateralis) – lateral support of ankle Articular facet of lateral malleolus – articulates with talus Malleolar fossa (fossa malleoli lateralis) – ligament attachment Malleolar groove – guides tendons of fibularis longus and brevis --- Joints Between Tibia and Fibula Superior tibiofibular joint (articulatio tibiofibularis) – plane synovial joint, supported by anterior and posterior ligaments of fibular head Interosseous membrane (membrana interossea cruris) – fibrous sheet between shafts, stabilizes and transmits force Distal tibiofibular joint (syndesmosis tibiofibularis) – fibrous syndesmosis, reinforced by anterior and posterior tibiofibular ligaments --- Clinical Relevance Osgood-Schlatter disease – inflammation at tibial tuberosity due to overuse Common fibular nerve injury – from trauma to fibular neck, may cause foot drop Tibiofibular syndesmosis injury – high ankle sprain due to ligament rupture --- Sources Kozlowski, T. (2017). Memorix Anatomy, 2nd ed. Standring, S. (2020). Gray’s Anatomy, 42nd ed. White TD, Folkens PA. (2005). The Human Bone Manual Programs used Complete Anatomy (3D4Medical), PowerPoint, Canva, Camtasia