Year :
2024
| Month :
June
| Volume :
18
| Issue :
6
| Page :
RC01 - RC05
Full Version
Radiological Study of Ossified Fabella in Indian Knees: A Cross-sectional Study
Published: June 1, 2024 | DOI: https://doi.org/10.7860/JCDR/2024/67901.19508
Sarang Shete, Hemlata Khanapure, Amrit Moulick
1. Associate Professor, Department of Orthopaedics, KLE Academy of Higher Education and Research, (Deemed to be University) (Formerly known as KLE University), Belagavi, Karnataka, India.
2. Assistant professor, Department of Roganidana, KLE Academy of Higher Education and Research, (Deemed to be University) (Formerly known as KLE University), Belagavi, Karnataka, India.
3. Postgraduate Resident (Acad), Department of Orthopaedics, KLE Academy of Higher Education and Research, (Deemed to be University) (Formerly known as KLE University), Belagavi, Karnataka, India.
Correspondence Address :
Dr. Sarang Shete,
Associate Professor, Department of Orthopaedics, JNMC, KLE Academy of Higher Education and Research, Belagavi-590010, Karnataka, India.
E-mail: drsarans@gmail.com
Abstract
Introduction: The fabella is a sesamoid bone found in the posterior and lateral region of the knee, identified on X-rays behind the femoral condyle in a true lateral view. Occasionally, it is a source of knee pain and is associated with radiological evidence of osteoarthritic knees. Due to its uncommon occurrence, there are very few studies related to an ossified fabella. While posteromedial pain and varus are common entities in knee arthritis, attention needs to be given to posterolateral structures like the fabella, as its radiological appearance may indicate the presence of arthritis.
Aim: To determine the occurrence of the fabella and its association with arthritis and knee deformities, such as varus or valgus, in Indian knees on X-rays.
Materials and Methods: This was a single-centre, X-ray-based, cross-sectional study conducted in the Joint Replacement Unit-II of the Department of Orthopaedics between June 2022 and March 2023 at KLE's Dr. Prabhakar Kore Hospital in Belagavi, Karnataka, India. A total of 500 knees were radiologically studied using Medsynapse/Picture Archiving and Communication System (PACS), and Cohen's Kappa Test statistics were employed to measure the agreement between the radiologist and orthopaedician regarding the presence or absence of the fabella interpreted on X-rays.
Results: The occurrence of ossified fabella was observed in 87 (17.4%) subjects. Amongst these 27 (31.03%) had bilateral fabella, while remaining 60 (68.97%) had it either on left or right side. There was a high association between the occurrence of the fabella with age, Osteoarthritis (OA), and knee deformity (p-value<0.001), and a significant association with gender (p-value<0.05), while no association was found between the occurrence of the fabella with the side involved or any previous operations performed (p-value>0.05).
Conclusion: The study revealed that ossified fabella is significantly associated with knee OA, age, and knee deformities.
Keywords
Osteoarthritis, Posterolateral, Sesamoid bone, Varus, X-ray
DOI: 10.7860/JCDR/2024/67901.19508
Date of Submission: Oct 08, 2023
Date of Peer Review: Dec 08, 2023
Date of Acceptance: May 02, 2024
Date of Publishing: Jun 01, 2024
AUTHOR DECLARATION:
• Financial or Other Competing Interests: None
• Was Ethics Committee Approval obtained for this study? Yes
• Was informed consent obtained from the subjects involved in the study? No
• For any images presented appropriate consent has been obtained from the subjects. No
PLAGIARISM CHECKING METHODS:
• Plagiarism X-checker: Oct 09, 2023
• Manual Googling: Dec 13, 2023
• iThenticate Software: May 01, 2024 (18%)
ETYMOLOGY: Author Origin
EMENDATIONS: 7
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