Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study
Abstract
Aims: To compare magnetic resonance imaging (MRI), derived patellar height indices, the Insall-Salvati Index (ISI), BlackburnePeel Ratio (BPR), and Caton-Deschamps Index (CDI) between adults with Osgood Schlatter disease (OSD) and matched controls, and to determine whether plateau-based indices (BPR, CDI) provide more anatomically reliable assessment of patellar height on MRI than the tuberosity-based ISI in the presence of tibial tuberosity distortion.
Methods: In this retrospective study, 350 adults were evaluated, including 175 patients with radiologically confirmed OSD and 175 age- and sex-matched controls. Knee MRI examinations were reviewed using standardized sagittal T1-weighted sequences. Patellar height was assessed using ISI, BPR, and CDI measured independently by two blinded radiologists.
Results: Median ISI, BPR, and CDI values were significantly higher in the OSD group (ISI: 1.13 vs. 1.00; BPR: 1.17 vs. 1.00; CDI: 1.23 vs. 1.00; all p<0.001), indicating a consistent pattern of patella alta in individuals with OSD. ISI demonstrated elevated values consistent with patella alta, whereas the plateau-based indices (BPR and CDI) likewise showed significantly greater patellar height in the OSD group. Age and sex distribution did not differ between groups (p>0.05).
Conclusion: Adults with OSD exhibit significantly increased patellar height across all MRI-derived indices. In the presence of tibial tuberosity distortion, plateau-based indices (BPR and CDI), which reference stable anatomical landmarks and are validated in normal populations, represent a more anatomically robust option for MRI-based patellar height assessment than the ISI.
Keywords
Supporting Institution
None
Ethical Statement
This retrospective study was conducted in accordance with the principles of the Declaration of Helsinki. Approval was obtained from the Institutional Review Board of [Ankara Bilkent City Hospital] (Approval No: [TABED 2-25-1738]).
References
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Details
Primary Language
English
Subjects
Radiology and Organ Imaging
Journal Section
Research Article
Publication Date
March 10, 2026
Submission Date
January 3, 2026
Acceptance Date
February 6, 2026
Published in Issue
Year 2026 Volume: 8 Number: 2
APA
Akdal Dölek, B., Tekdemir, H., & Duran, S. (2026). Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study. Anatolian Current Medical Journal, 8(2), 265-269. https://doi.org/10.38053/acmj.1855387
AMA
1.Akdal Dölek B, Tekdemir H, Duran S. Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study. Anatolian Curr Med J / ACMJ / acmj. 2026;8(2):265-269. doi:10.38053/acmj.1855387
Chicago
Akdal Dölek, Betül, Halil Tekdemir, and Semra Duran. 2026. “Evaluation of Patellar Height Indices in Individuals With Osgood–Schlatter Disease: A Magnetic Resonance Imaging Based Study”. Anatolian Current Medical Journal 8 (2): 265-69. https://doi.org/10.38053/acmj.1855387.
EndNote
Akdal Dölek B, Tekdemir H, Duran S (March 1, 2026) Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study. Anatolian Current Medical Journal 8 2 265–269.
IEEE
[1]B. Akdal Dölek, H. Tekdemir, and S. Duran, “Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study”, Anatolian Curr Med J / ACMJ / acmj, vol. 8, no. 2, pp. 265–269, Mar. 2026, doi: 10.38053/acmj.1855387.
ISNAD
Akdal Dölek, Betül - Tekdemir, Halil - Duran, Semra. “Evaluation of Patellar Height Indices in Individuals With Osgood–Schlatter Disease: A Magnetic Resonance Imaging Based Study”. Anatolian Current Medical Journal 8/2 (March 1, 2026): 265-269. https://doi.org/10.38053/acmj.1855387.
JAMA
1.Akdal Dölek B, Tekdemir H, Duran S. Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study. Anatolian Curr Med J / ACMJ / acmj. 2026;8:265–269.
MLA
Akdal Dölek, Betül, et al. “Evaluation of Patellar Height Indices in Individuals With Osgood–Schlatter Disease: A Magnetic Resonance Imaging Based Study”. Anatolian Current Medical Journal, vol. 8, no. 2, Mar. 2026, pp. 265-9, doi:10.38053/acmj.1855387.
Vancouver
1.Betül Akdal Dölek, Halil Tekdemir, Semra Duran. Evaluation of patellar height indices in individuals with Osgood–Schlatter disease: a magnetic resonance imaging based study. Anatolian Curr Med J / ACMJ / acmj. 2026 Mar. 1;8(2):265-9. doi:10.38053/acmj.1855387
