30. NORMAL KNEE MOTION
KNEE FLEXION-EXTENSION
takes place between the
bottom of the femur and the
top of the menisci.
TWISTING MOTION takes
place between the bottom of
the menisci and the tibia.
31. MENISCUS OF THE KNEE
Purpose:
Equalize weight
distribution across the
knee joint.
Shock absorption.
57. Mechanisms of Injury
MCL Valgus of Knee
ACL Valgus after MCL
Extension with tibia
in internal rotation.
Hyperextension.
58. PCL Valgus after MCL
and ACL.
Varus after LCL,ACL
Hyperflexion with
tibial internal
rotation.
Blunt trauma to
tibial tuberosity.
59. FCL Varus of knee.
M.M. External rotation
of the tibia.
Valgus to knee.
L.M. Hyperflexion of the
knee.
60. SIGNS AND SYMPTOMS
OF LIGAMENT INJURY
(Not all symptoms have to be
present to indicate injury)
• Immediate pain ++++
• Feeling of tearing.
• Hearing unusual noises.
…. 2.
61. .. 2 Signs and Symptoms
• Feeling of ‘giving way’.
• Loss of function of the
joint
• Be cautious of the
‘painful’ and then ‘not
very painful’ knee.
71. The greater the Q
angle, the greater
the tendency to
move the patella
laterally against the
lateral femoral
condyle. A large Q
angle plus strong
quad contraction
can dislocate pat.
76. Signs and Symptoms of
Patello-femoral Pain Syn.
Painful crepitus of the knee.
Locking, catching of knee.
Swelling.
Loss of strength.
Activity worsens symptoms.
79. The greater the Q
angle, the greater
the tendency to
move the patella
laterally against the
lateral femoral
condyle. A large Q
angle plus strong
quad contraction
can dislocate pat.
80. “ My knee came apart
and went back together
again”.
For example, “I was
running forward, planted
on my right foot, cut to
my left and attempted to
push off with my right”.
83. If the patella is dislocated,
slightly flex the hip and
slowly extend the knee.
Usually the patella
relocates. If it does not, do
not force the patella medial.
There may be some
associated fractures (back
of the patella, lateral
femoral condyle). MEDICAL