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knee joint
modified hinge
normal angle of knee
180-185* angled medially
genu valgum
>185* (knock knees)
increased tensile stress on MCL
increased compressive stress on lateral compartment
excessive lateral tracking of patella
genu varum
<175* (bow legs)
increased medial compartment compressive loading
greater loss of medial joint space
increased tensile strain on LCL
genu recurvatum
secondary to laxity of posterior knee structures
overpowering knee extension torque
medial meniscus
less mobility
connections to medial joint capsule, MCL, ACL, PCL, semimembranosus
lateral meniscus
connections to ACL, PCL, popliteus
Q angle
10-15 *
ASIS → mid patella → tibial tuberosity