Anatomy
What Is That
Ligament
Ligament
Ligament Injuries
What Is That Knee Injury
Name That Structure
100
This small, triangular bone, also known as the kneecap, protects the knee joint and aids in leg extension.
Patella
100
This important ligament in the knee helps prevent the tibia from sliding forward relative to the femur and is commonly injured in sports
ACL - Anterior Cruciate Ligament
100
Direct blow or valgus force from lateral direction or lateral tibial rotation
MCL Sprain
100
Patella Fracture
100
Structure 3
ACL
200
This slender bone runs parallel to the tibia and provides support and stability to the lower leg
Fibula
200
This C-shaped cartilage in the knee acts as a shock absorber between the femur and tibia.
Meniscus
200
Direct blow or varus force from medial direction or internal tibial rotation
LCL Sprain
200
Knee extension to help reduce dislocation
Immobilized 4 weeks - isometric exercises
May need horseshoe brace for protection
Patella Dislocation / Subluxation
200
Structure 4
MCL
300
This bone is the longest and strongest bone in the human body, connecting the hip to the knee.
Femur
300
This ligament, located behind the ACL, prevents the tibia from moving backward relative to the femur
PCL - posterior cruciate ligament
300
Weight bearing combined with rotary force, or sudden, strong internal rotation of femur with flexed knee
Meniscus Tear
300
Jumping, running, repetitive forceful extension of knee, plyometrics causes this
Patella Tendonitis
300
Structure 8
Lateral Meniscus
400
This bone, also known as the shinbone, is the larger and stronger of the two bones in the lower leg
Tibia
400
This ligament runs along the outer side of the knee, providing stability and preventing excessive side-to-side movement
LCL - lateral collateral ligament
400
decelerating from jump or forward running; combination of multiple plane forces acting at the knee, most commonly knee extension, valgus force, anterior shear & internal rotation of tibia
ACL Sprain
400
tibial displacement with respect to the femur: anterior, posterior, medial, lateral, and rotary
Knee dislocations
400
Structure 7
Fibula
500
The knee is classified as this type of synovial joint, allowing movement primarily in one direction like a door
Hinge
500
This ligament on the inner side of the knee helps stabilize the joint and prevent excessive inward movement
MCL - Medial collateral ligament
500
Most at risk when knee flexed to 90 degrees: fall with full weight on anterior aspect of bent knee w/foot in plantar flexion, hard blow to front of bent knee (dashboard injury)
PCL Sprain
500
Very common to feel & hear pop
Disability, unstable, feels like knee is “shifting”
Mild to severe swelling
Positive Anterior Drawer test, positive Lachman’s sig
ACL Sprain
500
Structure 5
Patella Tendon