Anterior Shear Test for Lumbar Instability | Rationale & Interpretation

What is the primary purpose of the anterior shear test?

• To test knee joint stability

• To evaluate anterior lumbar instability

• To measure hip flexion range

• To assess posterior lumbar instability

In the anterior shear test, which vertebrae are primarily involved in the demonstration?

• L2 and L3

• L1 and L2

• L4 and L5

• L5 and S1

What is the role of the cranial hand during the anterior shear test?

• To stabilize L4 firmly

• To hold L5 loosely

• To apply force through the femur

• To palpate the movement of L5

What indicates a positive anterior shear test?

• Increased hip flexion

• Excessive anterior translation of L4

• No movement detected

• Excessive posterior translation of L5

How does the anterior shear test indirectly assess anterior movement?

• By directly pulling L4 anteriorly

• By moving L5 anteriorly relative to L4

• By moving L5 posteriorly relative to L4

• By stabilizing L5 and palpating L4