Exam 4 Part 2 Knee joint Flashcards
The knee joint is formed from the articulation of the:
Femur, tibia, & patella
During development, 3 separate joints become continuous w/ each other & form a single, large knee cavity
- B/t patella & femur
- B/t lateral condyles of the femur & tibia
- B/t medial condyles of the femur & tibia
Articulating surface of the tibial condyles are also known as?
Lateral & medial tibial plateaus
Joint b/t the FEMUR & TIBIA is classified as?
Ginglymus (hinge) w. some degrees of rotation when joint is flexed
Joint b/t the PATELLA & FEMUR is classified as?
Plane gliding
Nerve supply to the knee joint?
Femoral
Obturator
Common fibular
Tibial
Bursae that lies b/t the patella & the skin
Subcutaneous PREpatellar
Bursae that lies b/t the tibial tubercle & the skin
Subcutaneous INFRApatellar
Bursae found b/t the ligamentum patella & the tibial tubercle
Deep infrapatellar
Bursae that lies b/t the femur & the common tendon of insertion of the quadriceps
Suprapatellar
Extrinsic ligaments of the knee joint (4)
- Ligamentum Patella
- Lateral (fibular) collateral
- Medial collateral
- Oblique & Arcuate Popliteal
- Anterior lig. of the knee joint & represents the original distal common tendon of insertion of the quadriceps
- Runs from the apex of the patella to the tibial tubercle
- Important part in maintaining the alignment of the patella relative to the articular surface of the femur
Ligamentum Patella
- Located on the lateral side of the joint
- superficial & separate from the articular capsule of the joint
- Attaches from the lateral epicondyle of the femur (proximally) to the head of the fibula (distally)
- Functions as a wall & prevents lateral movement (abduction) at the joint
Lateral (fibular) Collateral
- Medial side of the knee joint
- Blends w/ the articular capsule & directly attaches to the medial meniscus
- Attaches the medial epicondyle of the femur (proximally) & to the medial side of the tibia, just below the medial condyle (distally)
Medial (Tibial) Collateral
- Found on the posterior aspect of the knee joint
- They both function as walls to prevent HYPERextension of the joint
- They also stabilize the posterior aspect of the knee joint
Oblique & arcuate popliteal