Citation, DOI, disclosures and article data
Citation:
Knipe H, Sugaya classification. Reference article, Radiopaedia.org (Accessed on 23 Apr 2024) https://doi.org/10.53347/rID-148192
Disclosures:
At the time the article was created 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
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
The Sugaya classification is a 5-point system used to evaluate rotator cuff repair.
Usage
The Sugaya classification is the most common system used to evaulate rotator cuff repair 2 although intra- and inter-observer reproducibility is variable 3,4.
Classification
The Sugaya classification assesses post-operative rotator cuff repair on oblique coronal, oblique sagittal and transverse T2WI 1:
- type I: sufficient thickness compared to normal cuff with homogeneous low signal
- type II: sufficient thickness compared to normal cuff with partial high-intensity area
- type III
- <50% thickness compared to normal cuff without discontinuity
- suggests partial-thickness delamination tear
- type IV
- minor discontinuity (1-2 slices) on both oblique coronal and oblique sagittal images
- suggests small full-thickness tear
- type V
- major discontinuity (>2 slices) on both oblique coronal and sagittal images
- suggests medium or large full-thickness tear
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1. Sugaya H, Maeda K, Matsuki K, Moriishi J. Functional and Structural Outcome After Arthroscopic Full-Thickness Rotator Cuff Repair: Single-Row Versus Dual-Row Fixation. Arthroscopy: The Journal of Arthroscopic & Related Surgery. 2005;21(11):1307-16. doi:10.1016/j.arthro.2005.08.011 - Pubmed
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2. Malavolta E, Assunção J, Ramos F et al. Serial Structural MRI Evaluation of Arthroscopy Rotator Cuff Repair: Does Sugaya’s Classification Correlate with the Postoperative Clinical Outcomes? Arch Orthop Trauma Surg. 2016;136(6):791-7. doi:10.1007/s00402-016-2429-5 - Pubmed
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3. Niglis L, Collin P, Dosch J, Meyer N, Kempf J, Kempf J. Intra- and Inter-Observer Agreement in MRI Assessment of Rotator Cuff Healing Using the Sugaya Classification 10years After Surgery. Orthop Traumatol Surg Res. 2017;103(6):835-9. doi:10.1016/j.otsr.2017.06.006 - Pubmed
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4. Collin P, Yoshida M, Delarue A, Lucas C, Jossaume T, Lädermann A. Evaluating Postoperative Rotator Cuff Healing: Prospective Comparison of MRI and Ultrasound. Orthopaedics & Traumatology: Surgery & Research. 2015;101(6):S265-8. doi:10.1016/j.otsr.2015.06.006 - Pubmed
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