Anatomy - Lower Limb Bones And Joints Flashcards Preview

Block 2 - MSK > Anatomy - Lower Limb Bones And Joints > Flashcards

Flashcards in Anatomy - Lower Limb Bones And Joints Deck (10)
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- longest bone in body
- develops in cartilage
- commonly fractured


Tibia and fibula

- Tibia forms medial malleolys. Weight bearing anr robust

- Fibula: lateral malleolus. Extends further distally. Very limited weight bearing, many muscles attached, articulates with tibia. Important for stability of ankle joint


Sacroiliac joint

- synovial joint between appendicular and axial skeleton
- main stabilising ligaments: interosseous sI ligament, sacrotuberous ligament, sacospinous liggament
- stable joint to facilitate weight transfer from sacrum to hip bone and lower limb


Hip joint

- classification: synovial, ball and socket joint
- articular surface: acetabulum of hip bone and labrum to head of femur
- Movement - flex, extend, abduct, adduct, medial and lateral rotation
- ligament of head of femur carries a blood vessel to the developing head of femur in a juvenile


Knee joint

- largest synovial joint in the body
- modified hinge joint
- Flexion, extension, some medial and lateral rotation when joint is flexed
- stabilised by muscles and ligaments, most stable in extended position/close packed in extansion
- around 11 bursae



- fibrocartilage
- periphery is thick and blends with capsule - good blood supply
- inner aspect is thin and free edge, avascular
- attach to intercondylar area
- medial meniscus less mobile and more commonly injured


Cruciate ligaments

- within capsule but outside synovial membrane
- anterior cruciate attach to lateral femoral condyle, posterior cruciate attach to medial femoral condyle
- Function: stabilise knee
- ACL most commonly damaged


Collateral ligaments

-Tibial collateral ligament: broad and flat, limits abduction, more commonly damaged
- Fibular collateral ligamentL round,c ord-like, separate from joint capsule
- Limits adduction movement


Tibiofibular joint

- superior one is a plane synovial joint
- inferior one is a fibrous joint


Ankle joint

- classification: hinge, synovial
- Articulasr surface: distal tibia, medial and latteral malleoli to talus
- MovementL dorsiflexion, plantar flexion
- More stable in dorsiflexion