biomechanics of lower limb Flashcards
why is the hip joint intrinsically stable?
due to its shape, its strong joint capsule and the surrounding ligaments and muscles
for common daily activities, you need? (hip)
120 flexoin and 20 ab and adduction
what mechanism describes the spiral mechanism of the knee joint as it flexes and extends?
screw home mechanism
most joints operate at a mechanical?
disadvantage?
2 main functions of menisci?
shock absorbers and load distributors
3 main ligaments in the ankle?
medial, lateral, anterior inferor fibulotalar
bones that make up 3 parts f foot?
forefoot - met and phalanges, midfoot - navicular, cuboid and the cuneiforms, handoff - the talus and calcaneus
bones that form the subtalar joint?
talus and calcaneus
flexion and extension of joints during reciprocal gait?
knee - flexion 70, extension na, hip flexes 30 extends 20, dorsiflex 10, plantarflex 20
what is rec gait?
the most commonly used for walking. during RG the lowe limbs are used alternatively to provide support and propulsion.
3 main types of equipment found in gait analy centre?
motion analysis system, force plates, emgs
what is a motion analysis system?
a device which records the motion of markers placed on a patient, thus allowing the patients movements to be reconstructed and observed on a computer
phases of RG?
stance phase consists of heel down, foot flat, mid swing, heel up. then swing phase consists of toe umped swing, heel down
what is double support?
the period of time during the gait cycle when both feet are in contact with the ground
what is used to measure the ground reaction force exerted on the foot during the stance phase of gait?
a force plate
