Also found in: Dictionary, Thesaurus, Idioms, Encyclopedia.
Related to impingement: impingement test, nerve impingement


Neurology Compression of a nerve or blood vessel through a constricted space. See Nerve root impingement.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


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.
Medical Dictionary, © 2009 Farlex and Partners

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.

More discussions about impingement
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
References in periodicals archive ?
Lack of examination of the range of motion of shoulder joints in patients with shoulder impingement syndrome and lack of long-term patient follow-up and evaluating the effect of drugs over a long period of time are among the limitations of this study.
Taken together, the results of this study showed that the injection of ketorolac, triamcinolone and betamethasone are equally effective in increasing the performance and reducing pain in patients with shoulder impingement syndrome.
Based on the ultrasound diagnosis, sensitivity of the anterior impingement test for detecting cam impingement was 0.877 (95% CI: 0.812 to 0.894), and specificity was 0.962 (95% CI: 0.819 to 0.998).
The anterior impingement test was positive bilaterally in 50% of the participants (41/82), while the posterior impingement test was positive in 7 (8.5%), and only unilaterally.
In this study shoulder pain in individuals with shoulder impingement symptoms immediately decreased after a thoracic spine manipulation.
Finally, in 2015, Peek, et al, carried out a systematic review of three randomized controlled trials of participants who had non-specific shoulder pain including impingement syndrome and excluding cervical pain.
[17], who analyzed the course of return to normal physical activity among sportsmen after surgery for femoroacetabular impingement. The study reported a tendency for a higher rate of return to sport in professional rather than in recreational athletes.
(33) Schmitz et al compared anteroposterior pelvic radiographs made with EOS imaging in asymptomatic adolescents, demonstrating that 92.8% of participants demonstrated at least one parameter suggesting impingement morphology.
The technique comprises rhythmic, passive and gentle oscillations of the spine, and force and amplitude are applied permitting tissue responses and the individual's condition.11 Thoracic spinal manipulation results in pain reduction and physical function improvement in subacromial impingement syndrome patients.12-14
Nevertheless, the results of the current study suggested that simultaneous arthroscopic and endoscopic surgery can enable professional athletes with an intractable combination of AAIS (anterior ankle impingement syndrome) and PAIS (posterior ankle impingement syndrome)to return to athletic activity as soon as possible (23).
This review identified one moderate-quality clinical trial reporting the efficacy of thrust manipulation plus one conservative intervention for a rotator cuff condition (shoulder impingement).
The study conducted provides base-level quantitative data pertaining to the forces induced by the action of impingement of ACL against the intercondylar notch during knee movement.