Reliability of Determining and Measuring Acromial Enthesophytes
- Keith M. Baumgarten MD,
- James L. Carey MD, MPH,
- Joseph A. Abboud MD,
- Grant L. Jones MD,
- John E. Kuhn MD,
- Brian R. Wolf MD, MS,
- Robert H. Brophy MD,
- Charles L. Cox MD,
- Rick W. Wright MD,
- Armando F. Vidal MD,
- C. Benjamin Ma MD,
- Eric C. McCarty MD,
- G. Brian Holloway MD,
- Edwin E. Spencer Jr MD,
- Warren R. Dunn MD, MPH
- … show all 15 hide
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Although the reliability of determining acromial morphology has been examined, to date, there has not been an analysis of interobserver and intraobserver reliability on determining the presence and measuring the size of an acromial enthesophyte.
The hypothesis of this study was that there will be poor intraobserver and interobserver reliability in the (1) determination of the presence of an acromial enthesophyte, (2) determination of the size of an acromial enthesophyte, and (3) determination of acromial morphology.
Patients and Methods
Fifteen fellowship-trained orthopedic shoulder surgeons reviewed the radiographs of 15 patients at two different intervals. Measurement of acromial enthesophytes was performed using two techniques: (1) enthesophyte length and (2) enthesophyte–humeral distance. Acromial morphology was also determined. Interobserver and intraobserver agreement was determined using intraclass correlation and kappa statistical methods.
The interobserver reliability was fair to moderate and the intraobserver reliability moderate for determining the presence of an acromial enthesophyte. The measurement of the enthesophyte length showed poor interobserver and intraobserver reliability. The measurement of the enthesophyte–humeral distance showed poor interobserver reliability and moderate intraobserver reliability. The interobserver and intraobserver reliability in determining acromial morphology was found to be moderate and good, respectively.
There is fair to moderate reliability among fellowship-trained shoulder surgeons in determining the presence of an acromial enthesophyte. However, there is poor reliability among observers in measuring the size of the enthesophyte. This study suggests that the enthesophyte–humeral distance may be more reliable than the enthesophyte length when measuring the size of the enthesophyte.
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- Reliability of Determining and Measuring Acromial Enthesophytes
Volume 7, Issue 3 , pp 218-222
- Cover Date
- Print ISSN
- Online ISSN
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- Keith M. Baumgarten MD (1)
- James L. Carey MD, MPH (2)
- Joseph A. Abboud MD (3)
- Grant L. Jones MD (4)
- John E. Kuhn MD (2)
- Brian R. Wolf MD, MS (6)
- Robert H. Brophy MD (7)
- Charles L. Cox MD (2)
- Rick W. Wright MD (7)
- Armando F. Vidal MD (8)
- C. Benjamin Ma MD (9)
- Eric C. McCarty MD (10)
- G. Brian Holloway MD (11)
- Edwin E. Spencer Jr MD (11)
- Warren R. Dunn MD, MPH (5)
- Author Affiliations
- 1. Sports Medicine and Shoulder Surgery Section, Orthopedic Institute, 810 E 23rd Street, Sioux Falls, SD, 57117, USA
- 2. Department of Orthopaedics and Rehabilitation, Vanderbilt University Medical Center, Nashville, TN, USA
- 3. Shoulder and Elbow Service, Department of Orthopaedic Surgery, University of Pennsylvania Health System, Philadelphia, PA, USA
- 4. Department of Orthopaedic Surgery, The Ohio State University, Columbus, OH, USA
- 6. Department of Orthopaedic Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
- 7. Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO, USA
- 8. Sports Medicine and Shoulder Service, Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA
- 9. Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, CA, USA
- 10. Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, CO, USA
- 11. Shoulder and Elbow Institute, Knoxville Orthopaedic Clinic, Knoxville, TN, USA
- 5. Department of Orthopaedics & Rehabilitation, Health Sciences Research Center, Vanderbilt University Medical Center, Nashville, TN, USA