Leg Bones: Tibia and Fibula (right side, anterior view) Flashcards
The leg
Composed of two long bones
Tibia: larger, medial
Fibula: more delicate, lateral
Synovial hinge joint of the knee
Formed btwn the medial and lateral condyles of the femur
Meeting the medial and lateral condyles of the tibia
Medial and Lateral Menisci
Location: located btwn the condyles of the femur and tibia
Function: c-shaped dense fibrous pads, Assists in rotation of the knee and serves to spread synovial fluid within the joint
Intercondylar Eminence
Location: btwn the tibial condyles
Function: attaches to the cruciate ligaments to provide stability in the knee joint.
The tibia
Th weight bearing bone of the leg transmitting force btwn the femur and ankle.
The fibula
Attaches muscles of the leg, it articulates only with the tibia and does not form a joint with the femur.
Tuberosity of the tibia
Location: below the condyles of the tibia,
Function: prominent roughly triagnular, receives the tendon of the quadriceps femoris muscle via the patella ligament.
Crest of the Tibia
Location: sharp anterior border
Function: subcutaneous (Directly below the skin)
Interosseous Borer
Both on the tibia and fibula
Function: attachment for the interosseous membrane, contains oblique fibers, sloping down from the tibia towards the fibula.
Interosseous membrane (function)
Permits attachment of various muscles found in the anterior leg
Head of the fibula
Above the interosseous membrane,
Function: articulates with the lateral condyle of the tibia, form a gliding joint that is strengthened by surrounding ligaments of the kne joint.
Medial Malleolus
Location: distal end of the tibia is expanded to form the prominent
Function: articulates with the talus bone of the ankle. Forms the major segment of the ankle joint
Lateral Malleolus
Location: expanded dista end of the fibula
Malleoli
Function: embrace the ankle joint on either side, thereby preventing undesirable side to side movement,
Talus of the ankle
Receives the entire weight of the body from the femur and tibia, redistributing this force posteriorly to the calcaneus and anteriorly to the ball of the foot.
