Cliff sign (hip microinstability)
Last revised by Henry Knipe on 16 Jun 2022
Citation, DOI, disclosures and article data
Citation:
Iqbal S, Knipe H, Haouimi A, Cliff sign (hip microinstability). Reference article, Radiopaedia.org (Accessed on 25 Apr 2024) https://doi.org/10.53347/rID-77307
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77307
Article created:
10 May 2020,
Subhan Iqbal
Disclosures:
At the time the article was created Subhan Iqbal had no recorded disclosures.
View Subhan Iqbal's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Henry Knipe had the following disclosures:
- Radiopaedia Events Pty Ltd, Speaker fees (past)
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.
View Henry Knipe's current disclosures
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The cliff sign in hip microinstability is a steep drop-off and loss of normal sphericity of the lateral femoral head.
Radiographic features
Plain radiograph
- Shenton line distortion
- subluxation of the femoral head
- sclerosis of the femoral neck
MRI
- <3 mm anterior lateral capsule
- >5 mm anterior capsular recess
- posterior-inferior post-contrast accumulation 4
See also
References
- 1. Packer J, Cowan J, Rebolledo B et al. The Cliff Sign: A New Radiographic Sign of Hip Instability. Orthop J Sports Med. 2018;6(11):2325967118807176. doi:10.1177/2325967118807176 - Pubmed
- 2. Dangin A, Tardy N, Wettstein M, May O, Bonin N. Microinstability of the Hip: A Review. Orthop Traumatol Surg Res. 2016;102(8S):S301-9. doi:10.1016/j.otsr.2016.09.002 - Pubmed
- 3. Hoppe D, Truntzer J, Shapiro L, Abrams G, Safran M. Diagnostic Accuracy of 3 Physical Examination Tests in the Assessment of Hip Microinstability. Orthop J Sports Med. 2017;5(11):2325967117740121. doi:10.1177/2325967117740121 - Pubmed
- 4. Safran M. Microinstability of the Hip-Gaining Acceptance. J Am Acad Orthop Surg. 2019;27(1):12-22. doi:10.5435/JAAOS-D-17-00664 - Pubmed
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