Question

Hi, could someone please help me answer all parts of this question

QUESTION 5 TOTAL MARKS: 25] [5 Marks] Q 5(a) Describe, with the aid of a sketch, the main features of a knee ankle foot orthosis (KAFO). Q 5(b) Figure 5.1 (a) and (b) show the sagittal plane joint kinematics for the ankle and knee of a patient with Spina Bifida with and without a conventional KAFO Knee Flexion 70 50 40 30 20 10 to 03 07 Time (s) 02 0.4 08 08 12 1 Time (s Figure 5.1 (a) Ankle Plantar / Dorsiflexion and (b) Knee flexion for a spina bifida patient with and without a KAFO. (i) Identify, and describe using anatomical terms, the key problems associated with ankle and knee function compared to normal gait, in the case where [3 Marks] no orthosis is used (ii) Discuss the efficacy of the orthosis in relation to these key problems based [4 Marks] on the kinematic data provided (ii) Using free body diagrams, illustrate the forces applied by the orthosis to the [8 Marks] body during (a) the stance phase, (b) the swing phase Q 5(c) [5 Marks] Using the following information for a frame of a gait cycle study, calculate the power generation, absorption and/or transfer flows at the knee and show them on a diagram of the knee Kinematic Data Joint Reaction Forces and Moments Knee Linear Velocity Vxk 0.58 m/s Vyk=-0.03 m/s Knee: Fxk-36.8N F.-481.5 N Mk 24.8 N.m (on Leg) (on Leg) (on Leg) Leg Angular Velocity o 7.87 rad/s Thigh Angular Velocity oth4.84 rad/s End of Question 5)

Answer 1

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