Clinical Knee Anatomy Flashcards
What increases the mechanical advantage of the quadriceps and how?
- patella
- brings the extensor mechanism further from the knee joint.
Medial patellofemoral ligament:
- a thickening of the patellar ligament.
Which meniscus is least mobile and most likely to tear?
- medial meniscus
- attached to medial collateral ligament
A proximal tibial fracture could lead to:
- a popliteal artery tear because the popliteal artery is so closely bound to the tibia.
The most common type of knee pain:
patellofemoral
- occurs when the patella is pressed against the femur
- Diffuse anterior tenderness
- Patellar tenderness
- Patellofemoral crepitus
- Overweight
Q-Angle:
The angle between the femur and the tibia.
Patella is always pulled laterally, and almost always dislocates:
laterally.
What is the only part of the menisci that can be repaired?
- lateral 1/3rd
- interior menisci (pink and white) are avascular
Symptoms of meniscal tears:
- Isolated joint line pain
- Mechanical symptoms
- Catching
- Locking
McMurrays sign is indicative of:
meniscal tear
What part of the meniscus has about 70% of the mensicus function?
- peripheral rim (splits load of femur)
- reason for partial meniscectomy
Most common knee ligament injury:
- MCL sprain
- pain at medial femoral epicondyle
How do you test for MCL sprain/tear?
- valgus stress
PCL is looser in ______ and ________ in flexion.
looser in extension and tighter in flexion.
ACL is _______ in flexion and ________ in extension.
looser in flexion and tighter in extension.
Which is more likely to tear during a direct fall to ground: ACL or PCL?
- PCL
- foot in plantar flexion, tibia head strikes ground first
- PCL tightest at 90 degrees
