We need you! See something you could improve? Make an edit and help improve WikSM for everyone.
Patellofemoral Joint
From WikiSM
Contents
Description
- General
- Biomechanically complex
- Synovial joint between the condyles of the Femur, articular surface of Patella
- Contiguous and part of the the Knee Joint
- Posterior patella: medial, lateral and odd facets articulate; lateral is largest and steepest
- Femur: medial and lateral condyles articulate
- Articular surface: Hyaline Cartilage
- Joint capsule is contiguous with the knee joint
- Static stabilizers
- Medial: Medial Patellofemoral Ligament, medial patelloatibial ligament, Medial Patellar Retinaculum
- Lateral: lateral patellofemoral ligament, lateral patelloatibial ligament, Lateral Patellar Retinaculum
- Dynamic stabilizers
- Quadriceps Femoris proximally via the Quadriceps Tendon
- Patellar Tendon on the inferior pole attaches to the tibial tubercle
- Vastus Medialis: medial restraint to lateral translation
- Vastus Lateralis: lateral restraint to medial translation
Actions
- Knee extension
- Patellar slides along femoral condyles
- Increases lever arm of the extensor mechanism
- Transmits tensile forces generated by the quadriceps to the patellar tendon
Vascular Supply
- Branches of the Popliteal Artery including
- Superior, inferior medial, lateral geniculate arteries
- Branches of the Femoral Artery including
- Descending geniculate branches
Innervation
- Branches of
Clinical Significance
- Patellofemoral Pain Syndrome
- Chondromalacia Patellae
- Patellofemoral Joint Arthritis
- Patella Instability
- Trauma