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jack·knife po·si·tion(jaknīf pŏ-zishŏn)
Positioning a patient on on her or his stomach, with knees at a 90-degree angle and arms outstretched.
A position in which the patient lies on the back, shoulders elevated, legs flexed on thighs, thighs at right angles to the abdomen. It is used when introducing a urethral sound.Synonym: reclining position
See also: position