During a pull move, contacting the inferior medial PSIS indicates which listing?

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Multiple Choice

During a pull move, contacting the inferior medial PSIS indicates which listing?

Explanation:
The pull move readout on the PSIS reveals the three-dimensional position of the innominate. An inferior and medial contact on the PSIS means the ilium is positioned posteriorly and inferiorly with inward (internal) rotation. In this listing system, that exact combination is encoded as PIIN. The other options don’t match all three components: a posterior-inferior alone (PI) lacks the rotational direction; posterior-inferior with external rotation (PIEX) would indicate the opposite rotation; and inferior without the posterior/rotational components (IN) doesn’t capture the full orientation shown by the contact. So the inferior medial PSIS contact during a pull aligns with PIIN.

The pull move readout on the PSIS reveals the three-dimensional position of the innominate. An inferior and medial contact on the PSIS means the ilium is positioned posteriorly and inferiorly with inward (internal) rotation. In this listing system, that exact combination is encoded as PIIN. The other options don’t match all three components: a posterior-inferior alone (PI) lacks the rotational direction; posterior-inferior with external rotation (PIEX) would indicate the opposite rotation; and inferior without the posterior/rotational components (IN) doesn’t capture the full orientation shown by the contact. So the inferior medial PSIS contact during a pull aligns with PIIN.

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