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Which of the following best describes normal tibio-femoral joint kinematics ?
The femur undergoes internal rotation with knee flexion
The lateral femoral condyle remains stationary on the lateral tibia plateau during knee flexion from 0 to 120 degrees
The tibia undergoes internal rotation with knee flexion
The medial femoral condyle moves posteriorly on the medial tibial plateau during knee flexion from 0 to 120 degrees
Beyond 120 degrees of flexion only the lateral femoral condyle participates in femoral rollback
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Which of the following motions shows the greatest difference between a normal and ACL deficient knee?
Posterior femoral translation at 30° flexion
Posterior femoral translation at 60° flexion
Axial rotation in full extension
Axial rotation at 50° flexion
Varus angulation at 30 ° flexion
Proper measurement of the Q-angle
HPI - A 18 year old male patient presents with left knee pain.
He suffered trauma to his left knee 1 year ago in an explosion that caused a tibial plateau fracture and extensive burns around the lateral aspect of his left knee and left thigh.
He was treated with an Ilizarov external fixator that left this valgus deformity and a loss of knee ROM.
Physiotherapy has helped the patient gain knee ROM from 0 degrees extension to 70 degrees flexion.
Prior to management, would you order a CT scan of this patient's left knee?
HPI - I have a patient with a bilateral flexion contracture of the knee. Range (-40º to 110º).
What is the best treatment?