21) The elbow has dislocated if the olecranon is not in a horizontal line with the epicondyles of the humerus.
22) The supracristal line is used to determine the location of a lumbar puncture.
23) The dimple indicating the posterior superior iliac spine is a landmark for the sacroiliac joint.
24) The femoral triangle is formed by the inguinal ligament, sartorius, and gracilis muscles.
25) The two heads of the gastrocnemius form the inferior borders of the popliteal fossa.
26) The head of the radius is felt by pressing into the dimple on the posterior lateral surface of the elbow while extending and rotating the forearm.
27) Intramuscular injections in the deltoid should be given about 1 inch superior to the greater tubercle.
28) The external carotid arteries and the carotid pulse can be palpated just posterior to the sternocleidomastoid.
29) In lean, muscular individuals, the linea semilunaris marks the lateral borders of the rectus abdominis.
30) You can locate the iliac crests by resting your hands on your hips.