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A fully-automated deep learning algorithm matched performance of radiologists in assessment of knee osteoarthritis severity in radiographs using the Kellgren-Lawrence grading system. To develop an automated deep learning-based algorithm…

Image and Video Processing · Electrical Eng. & Systems 2023-08-15 Albert Swiecicki , Nianyi Li , Jonathan O'Donnell , Nicholas Said , Jichen Yang , Richard C. Mather , William A. Jiranek , Maciej A. Mazurowski

Knee osteoarthritis (OA) assessment involves a natural but often underused label hierarchy: a coarse binary OA decision and a fine-grained Kellgren--Lawrence (KL) severity grade. Existing deep learning studies commonly treat these targets…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Tongxu Zhang

Knee Osteoarthritis (KOA) is a musculoskeletal condition that can cause significant limitations and impairments in daily activities, especially among older individuals. To evaluate the severity of KOA, typically, X-ray images of the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Adarsh Gupta , Japleen Kaur , Tanvi Doshi , Teena Sharma , Nishchal K. Verma , Shantaram Vasikarla

This paper proposes a new approach to automatically quantify the severity of knee osteoarthritis (OA) from radiographs using deep convolutional neural networks (CNN). Clinically, knee OA severity is assessed using Kellgren \& Lawrence (KL)…

Computer Vision and Pattern Recognition · Computer Science 2016-09-09 Joseph Antony , Kevin McGuinness , Noel E O Connor , Kieran Moran

Radiographic grading of knee osteoarthritis (KOA) with the Kellgren-Lawrence (KL) system is limited by inter-reader variability and the opacity of current deep learning approaches, which predict KL grades directly from images without…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Azmul A. Irfan , Nur Ahmad Khatim , Alfan Alfian Irfan , Achmad Zaki , Erike A. Suwarsono , Mansur M. Arief

The assessment of knee osteoarthritis (KOA) severity on knee X-rays is a central criteria for the use of total knee arthroplasty. However, this assessment suffers from imprecise standards and a remarkably high inter-reader variability. An…

Knee Osteoarthritis (OA) is a debilitating disease affecting over 250 million people worldwide. Currently, radiologists grade the severity of OA on an ordinal scale from zero to four using the Kellgren-Lawrence (KL) system. Recent studies…

Image and Video Processing · Electrical Eng. & Systems 2024-07-16 Niamh Belton , Misgina Tsighe Hagos , Aonghus Lawlor , Kathleen M. Curran

Knee Osteoarthritis (KOA) is a prevalent musculoskeletal disorder that severely impacts mobility and quality of life, particularly among older adults. Its diagnosis often relies on subjective assessments using the Kellgren-Lawrence (KL)…

Image and Video Processing · Electrical Eng. & Systems 2025-01-17 Zhe Wang , Aladine Chetouani , Yung Hsin Chen , Yuhua Ru , Fang Chen , Mohamed Jarraya , Fabian Bauer , Liping Zhang , Didier Hans , Rachid Jennane

Knee osteoarthritis (KOA) is among the musculoskeletal disorders that considerably restrict joint mobility, cause severe chronic pain and impact negatively on quality life. It is one of the persistent health issues worldwide. Generally,…

Artificial Intelligence · Computer Science 2026-05-08 Dayam Nadeem , Neha , Safdar Mustafa , Adnan Alvi , Mohd Hussain

Knee osteoarthritis (OA) is the most common musculoskeletal disease in the world. In primary healthcare, knee OA is diagnosed using clinical examination and radiographic assessment. Osteoarthritis Research Society International (OARSI)…

Image and Video Processing · Electrical Eng. & Systems 2019-07-19 Aleksei Tiulpin , Simo Saarakkala

Knee osteoarthritis (KOA) grading based on radiographic images is a critical yet challenging task due to subtle inter-grade differences, annotation uncertainty, and the inherently ordinal nature of disease progression. Conventional deep…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Xiaoyang Li , Runni Zhou

The severity of knee osteoarthritis is graded using the 5-point Kellgren-Lawrence (KL) scale where healthy knees are assigned grade 0, and the subsequent grades 1-4 represent increasing severity of the affliction. Although several methods…

Image and Video Processing · Electrical Eng. & Systems 2020-04-21 Sudeep Kondal , Viraj Kulkarni , Ashrika Gaikwad , Amit Kharat , Aniruddha Pant

Knee osteoarthritis (KOA) is a disease that impairs knee function and causes pain. A radiologist reviews knee X-ray images and grades the severity level of the impairments according to the Kellgren and Lawrence grading scheme; a five-point…

Image and Video Processing · Electrical Eng. & Systems 2019-08-26 Jaynal Abedin , Joseph Antony , Kevin McGuinness , Kieran Moran , Noel E O'Connor , Dietrich Rebholz-Schuhmann , John Newell

The diagnostic accuracy and subjectivity of existing Knee Osteoarthritis (OA) ordinal grading systems has been a subject of on-going debate and concern. Existing automated solutions are trained to emulate these imperfect systems, whilst…

Machine Learning · Computer Science 2025-05-30 Niamh Belton , Aonghus Lawlor , Kathleen M. Curran

Knee osteoarthritis (OA) is a common degenerate joint disorder that affects a large population of elderly people worldwide. Accurate radiographic assessment of knee OA severity plays a critical role in chronic patient management. Current…

Image and Video Processing · Electrical Eng. & Systems 2021-12-20 Kang Zheng , Yirui Wang , Chen-I Hsieh , Le Lu , Jing Xiao , Chang-Fu Kuo , Shun Miao

Knee osteoarthritis (OA) is one of the highest disability factors in the world. This musculoskeletal disorder is assessed from clinical symptoms, and typically confirmed via radiographic assessment. This visual assessment done by a…

Image and Video Processing · Electrical Eng. & Systems 2020-08-13 Huy Hoang Nguyen , Simo Saarakkala , Matthew Blaschko , Aleksei Tiulpin

Knee osteoarthritis (OA) is the most common musculoskeletal disorder. OA diagnosis is currently conducted by assessing symptoms and evaluating plain radiographs, but this process suffers from subjectivity. In this study, we present a new…

Computer Vision and Pattern Recognition · Computer Science 2017-10-31 Aleksei Tiulpin , Jérôme Thevenot , Esa Rahtu , Petri Lehenkari , Simo Saarakkala

Automated Kellgren--Lawrence (KL) grading from knee radiographs is challenging due to subtle structural changes, long-range anatomical dependencies, and ambiguity near grade boundaries. We propose AGE-Net, a ConvNeXt-based framework that…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Xiaoyang Li , Runni Zhou , Xinghao Yan , Liehao Yan , Zhaochen Li , Chenjie Zhu , Rongrong Fu , Yuan Chai

Knee osteoarthritis (OA) is the most common joint disorder and a leading cause of disability. Diagnosing OA severity typically requires expert assessment of X-ray images and is commonly based on the Kellgren-Lawrence grading system, a…

Image and Video Processing · Electrical Eng. & Systems 2024-12-11 Nicharee Srikijkasemwat , Soumya Snigdha Kundu , Fuping Wu , Bartlomiej W. Papiez

Diagnosing knee joint osteoarthritis (KOA), a major cause of disability worldwide, is challenging due to subtle radiographic indicators and the varied progression of the disease. Using deep learning for KOA diagnosis requires broad,…

Image and Video Processing · Electrical Eng. & Systems 2024-09-26 Fabi Prezja , Leevi Annala , Sampsa Kiiskinen , Timo Ojala
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