100 likes | 327 Views
The Knee Joint. Largest and Most Complex Joint. Structure of the Knee. Lateral and Medial Epicondyles on both femur and tibia Tibial Tuberosity front of tibia
E N D
The Knee Joint Largest and Most Complex Joint
Structure of the Knee • Lateral and Medial Epicondyles • on both femur and tibia • TibialTuberosity • front of tibia • Patellofemoral Joint – patella held in place by the quadraceptendon (above), patellar lig. (below), and intervening fibers that form a pocket • Medial and Lateral Condyle (femur) • Intercondylarfossa (femur) • Intercondylar eminence (tibia)
Menisci • Circular rims of fibrocartilage on the articular surfaces of the head of the tibia
Menisci • Thick on the outside – get thinner on the inside • Deepen the joint and serve as shock absorbers • Inner edges are free, but the other borders are attached loosely to the rim of the head of the tibia • Medial and Lateral Meniscus
Ligaments • Patellar lig., Medial (tibial) Collateral lig., Lateral (fibular) Collateral lig., Oblique Popliteallig., Anterior Cruciatelig., Posterior Cruciatelig., Transverse lig., Iliotibial tract
Movements • Flexion and Extension • Inward and Outward rotation in the non-weight bearing flexed position
Muscles of the Knee Joint Anterior (Extension) Posterior (Flexion) Hamstring group Biceps femoris Semimembranosus Semitendinosus Sartorius Gracilis Popliteus Gastrocnemius • Quadracepsfemoris group • Rectus femoris • Vastusintermedius • Vastuslateralis • Vastusmedialis