Citation, DOI, disclosures and article data
Citation:
Knipe H, Hacking C, Friedman line. Reference article, Radiopaedia.org (Accessed on 02 Jun 2023) https://doi.org/10.53347/rID-96759
Disclosures:
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Craig Hacking's current disclosures
The Friedman or scapular line can be used to determine glenoid version and glenoid bone loss 4. Glenoid version angle measured by the Friedman method has better inter-reader reliability than the scapular body method 2.
Measurement
The Friedman line is drawn along the long axis of the scapula from the tip of the medial border to the center of the glenoid fossa 1-4.
- 1. Sharifi A, Siebert M, Chhabra A. How to Measure Glenoid Bone Stock and Version and Why It Is Important: A Practical Guide. Radiographics. 2020;40(6):1671-83. doi:10.1148/rg.2020200008 - Pubmed
- 2. Siebert M, Chalian M, Sharifi A et al. Correction To: Qualitative and Quantitative Analysis of Glenoid Bone Stock and Glenoid Version: Inter-Reader Analysis and Correlation with Rotator Cuff Tendinopathy and Atrophy in Patients with Shoulder Osteoarthritis. Skeletal Radiol. 2020;49(6):995-1003. doi:10.1007/s00256-020-03386-z
- 3. Rouleau D, Kidder J, Pons-Villanueva J, Dynamidis S, Defranco M, Walch G. Glenoid Version: How to Measure It? Validity of Different Methods in Two-Dimensional Computed Tomography Scans. J Shoulder Elbow Surg. 2010;19(8):1230-7. doi:10.1016/j.jse.2010.01.027 - Pubmed
- 4. van de Bunt F, Pearl M, Lee E, Peng L, Didomenico P. Glenoid Version by CT Scan: An Analysis of Clinical Measurement Error and Introduction of a Protocol to Reduce Variability. Skeletal Radiol. 2015;44(11):1627-35. doi:10.1007/s00256-015-2207-4 - Pubmed
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