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1. to turn along an axis while moving forward along a surface.
2. the act of rolling.
3. an object that has been rolled into a cylindrical shape.
pelvic roll pelvic rotation.
trochanter roll a wedge (usually a rolled towel) placed from the crest of the ilium to midthigh to prevent external rotation of the hip when the patient is in a recumbent position.
Use of trochanter roll to prevent external rotation of hip.
See illustration.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


1. A mass or structure of a rounded or cylindric form created by rotation of a layer of material around its own long axis.
2. The process by which a round entity is moved by a pressure gradient, as when leukocytes move along a blood vessel wall.
Farlex Partner Medical Dictionary © Farlex 2012


(rol) [Fr. roulle, scroll fr. L. rotula, small wheel]
A usually solid, cylindrical structure.

cotton roll

A cylindrical mass of purified and sterilized cotton used as packing or absorbent material in various dental procedures.

ilial roll

A sausage-shaped mass in the left iliac fossa. It is due to a collection of feces in or induration of the walls of the sigmoid colon.

lumbar roll

An air-filled, foam, or gel cushion placed behind the lower back as a support.

Patient care

It is used to maintain the normal lordotic curvature of the lumbar spine and thereby to relieve pressure on commonly injured structures such as discs and facet joints.

scleral roll

See: spur, scleral

trochanter roll

A cushion or pillow used to hold the hip of a postoperative patient in neutral position.
See: Trochanter Roll
Medical Dictionary, © 2009 Farlex and Partners

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References in periodicals archive ?
* Roll-call votes do not provide much useful data on the electorate:
Most ACM members would probably consider publishing roll-call votes in Communications to be a waste of paper.
* Kocher is factually mistaken when he says that during his seven years on Council preceding his Presidency there were no roll-call votes taken.
Many state schools were realising that these traditional symbols were better than a ``rag-tag roll-call'' at letting children know they were there to learn, said chief schools inspector David Bell.
Since they take the broadest set of data relating to legislator preferences--the complete set of roll-call votes from a Congress--NOMINATE scores provide a broad-based, non-time-specific measure of underlying legislator ideology.
We can, however, create legislators, endow them with known preferences, have them vote in ways consistent with the spatial model on roll calls, and then use NOMINATE to estimate their preferences from the simulated roll-call data.
We chose the latter solution to preserve our ability to evaluate how well NOMINATE estimates ideal points on unidimensional roll-call data.
Finally, there may be some theoretical problems using roll-call data to estimate legislators' ideology.(4) If one believes that vote scores may be affected by legislators' strategies, it may be the case that party activity could skew NOMINATE scores and render them a less accurate tool for measuring ideology.
To review, then, we generated roll-call data from simulated legislatures consisting of members that possessed ideal points on one, two, or three dimensions.