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Neurology Compression of a nerve or blood vessel through a constricted space. See Nerve root impingement.


1. Degenerative alteration in a joint in which there is excessive friction between joint tissues. This typically causes limitations in range of motion and the perception of joint pain.
2. An area of periodontal tissue traumatized by the occlusal force of a tooth.
3. The unwanted compression of soft tissue between two or more harder, unyielding structures.


a term used in sports medicine when soft tissue is trapped, usually between bones, leading to pressure, inflammation, pain and loss of function. Shoulder impingement is common in repetitive overhead sports, especially swimming, where the tendons of the 'rotator cuff' are trapped between the head of the humerus and the acromion, causing pain when moving the arm forwards and upwards: the impingement sign. Treatment aims to alter poor technique and reduce inflammation (rest, ice, anti-inflammatory drugs and steroid injections). Surgery is occasionally required.

impingement (impinj´mənt),

n the striking or application of excessive pressure to a tissue by food or a prosthesis.

Patient discussion about impingement

Q. what does c4-5 mild central disk bulging impinging upon cervical cord without spinal stenosis or distortion of the cord . mild righ neural foraminal narrowing from uncovertebral joint hypertropy mean

A. Well this basically means there is a very small narrowing of the cervical (your neck area) spinal canal (where the spinal cord is), however the narrowing does not cause any damage to the spinal cord, therefore probably does not cause any major symptoms involving the nerves. The c4-5 bulging part refers to the part in between the two cervical vertebras c4 and c5, in which the disc (a part in the spinal cord) is sliding a bit side-ways, but again, it does not seem to be causing any trouble.

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References in periodicals archive ?
The study of all those facts which impinge on a building project objectively and subjectively.
Whereas researchers used to begin by looking at affinity and potency, a genomics/informatics-based research culture is growing and starting to impinge on the classical mode.
Bruno has conserved the original volumes and his modern additions of lifts (in the internal courtyard), stairs, a cafe, shop and lavatories impinge lightly on the existing structure.
HarperCollins' use of Baby Buggy's trademarked logo and symbols was inadvertent and not intended to impinge on Baby Buggy's rights or to signify in any way that Baby Buggy endorses "The New Basics.
For the next two years the experimenters expect to be busy with the means of gneerating and focusing the beam of lithium ions, which will come from the walls of a cylindrical diode and impinge on the target (hung in the center of the diode) from all sides.
In addition, global politics may also impinge financial performance.
In general, the architects' highly controlled insertions impinge as little as possible on the original fabric, the lightness and transparency of the new held in tension against the solidity of the old.
In its decision striking down the ban on minors, the Supreme Court said that "minors enjoy the protection of the First Amendment" and added that "limitations on the amount that an individual may contribute to a candidate or political committee impinge on the protected freedoms of expression and association.
But the exceptional qualities of the warehouse structure, with its massive oak timbers and lofty volumes, impressed upon architect and client the conviction that they should impinge upon the building as lightly as possible.
Battat added, "Given our strong balance sheet and credit quality, we expect that the newly-established dividend policy will not impinge on our ability to continue investing in likely internal and external opportunities, including stock repurchases when appropriate.
In addition any more credit downgrades will directly impinge on their ability to finance ANY deal.
Contemporary ecology is ecumenical, for rather than simply denying certain techniques and intelligences, it must try to reconcile the friendly natural forces that impinge on man with the friendly human artefacts that impinge on the environment.