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. 2013 Jan 12;18(2):197–204. doi: 10.1007/s00776-012-0345-2

Fig. 10.

Fig. 10

Dropping sign or external rotation lag sign. The patient is asked to keep the arm in external rotation. On the intact side (a), the patient can keep the arm in external rotation position when the examiner lets the arm go. On the involved side (b), the patient cannot keep the arm in external rotation, and the arm comes back to the neutral rotation after the examiner lets the arm go