Document Detail


The measurement of subacromial contact pressure in patients with impingement syndrome.
MedLine Citation:
PMID:  10210066     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study presents the subacromial contact pressure findings in 25 patients who underwent an arthroscopic acromioplasty for impingement syndrome. All patients failed a course of conservative management before surgery. Patients were evaluated, both before and after acromioplasty, by examination, UCLA functional score, and radiographic assessment of acromial morphology. At the time of surgery, a 4 x 10 mm air-filled catheter was placed beneath the anterior aspect of the acromion under arthroscopic visualization. Subacromial contact pressures were recorded throughout an arc of shoulder motion. Mean pressure and standard deviation were derived from three trials. This protocol was performed on all patients and the results were statistically evaluated. The mean subacromial pressure before acromioplasty was 11.7, 35.6, 50.1, 51.1, and 57.4 mm Hg at abduction arcs of 0 degrees , 90 degrees , and 180 degrees, hyperabduction (forced passive limit of abduction), and cross-reach (arm adducted across the patient's chest with the shoulder internally rotated), respectively. The pressure after acromioplasty decreased to 1.6, 7.8, 15.9, 22.8, and 16.5 mm Hg, respectively. This decrease was significant in all positions (P = .016 at 0 degrees and <.001 in all other positions). At 90 degrees of abduction, pressure always decreased in internal rotation and increased in external rotation. Maximal contact pressure developed in either hyperabduction or cross-reach in all patients except two. Preoperative testing for the position of maximum impingement pain generally correlated with the position of maximum contact pressure.
Authors:
W E Nordt; R B Garretson; E Plotkin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association     Volume:  15     ISSN:  0749-8063     ISO Abbreviation:  Arthroscopy     Publication Date:  1999 Mar 
Date Detail:
Created Date:  1999-05-28     Completed Date:  1999-05-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8506498     Medline TA:  Arthroscopy     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  121-5     Citation Subset:  IM    
Affiliation:
West End Orthopedics, Richmond, Virginia, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Arthroscopy
Endoscopy*
Humans
Middle Aged
Pressure
Shoulder Impingement Syndrome / physiopathology*,  surgery

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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