Volume 27, Issue 136, June 2023

Normal reference values of Caton Deschamp ratio in knee joint for patellar height in Indian population

Priya Potdukhe¹, Sandeep Dhote², Avinash Dhok^3♦, Ameen Ansari⁴

¹Junior Resident, Department of Radiodiagnosis and Imaging, NKP Salve Institute of Medical Sciences and Research Centre, Digdoh hills, Nagpur 440019, Maharashtra, India
²Assistant Professor, Department of Radiodiagnosis and Imaging, NKP Salve Institute of Medical Sciences and Research Centre, Digdoh hills, Nagpur 440019, Maharashtra, India
³Professor and Head of Department, Department of Radiodiagnosis and Imaging, NKP Salve Institute of Medical Sciences and Research Centre, Digdoh hills, Nagpur 440019, Maharashtra, India
⁴Junior Resident, Department of Radiodiagnosis and Imaging, NKP Salve Institute of Medical Sciences and Research Centre, Digdoh hills, Nagpur 440019, Maharashtra, India

^♦Corresponding author
Professor and Head of Department, Department of Radiodiagnosis and Imaging, NKP Salve Institute of Medical Sciences and Research Centre, Digdoh hills, Nagpur 440019, Maharashtra, India

ABSTRACT

Background: The patella, which is located in the quadriceps tendon, is the biggest sesamoid bone in humans. The most essential factor in determining patellar stability is patellar height. Hence, various ratios were created to determine the normal values of height of patella. Squatting position is commonly used practise in Indian population. The aim of our study was to ascertain the normal reference values of the Caton Deschamp ratio in the Indian population and to find if any significant difference exists for Indian population as compared to Caucasian population, which can be used as a baseline for reporting patella alta and patella baja. Methods: This was retrospective research that used 200 normal lateral radiographs of Indian knee joints. Visualization of the tibial insertion is better in 30 ̊ flexion of knee. The Caton Deschamp ratios were calculated. Results: The mean Caton Deschamp ratio for Indian population is 0.80 ± 0.21 which in comparison to the Caucasian values (patella baja: <0.5, normal: 0.8, patella alta: >1.0) were similar (P >0.05). Conclusion: No statistically significant difference was found between the normal reference values of Caton Deschamp ratios among different human races and hence these values can be used for restoring knee kinematics in diseased states irrespective of the race.

Keywords: Caton Deschamp ratio, Knee joint, Patella alta, Patella baja, Patellar height

Medical Science, 2023, 27, e247ms2968

PDF

DOI: https://doi.org/10.54905/disssi/v27i136/e247ms2968

Published: 05 June 2023