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PTA Physical Therapy Assistant

Category - Therapeutic Modalities

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When applying lumbar traction, what is the effect of flexing the hips from 60 to 75 degrees of flexion?

Increase the laxity in L₅ - S₁
Increase the laxity in L₄ - L₅
Increase the laxity in L₃ - L₄

Explanation

Answer: B - When applying lumbar traction, flexing the hips from 60 to 75 degrees of flexion will cause an increase laxity in L₄ - L_5.
When applying lumbar traction, flexing the hips from 45 - 60 degrees of flexion will cause increase the laxity in L₅ - S_1. Whereas flexing the hips from 45 - 60 degrees of flexion will cause increase the laxity L₃ - L₄.

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