Agreement between markerless and marker-based motion capture for knee kinematics and kinetics during functional activities in knee osteoarthritis.

Rhodora Therese Gumabao Torres, Benjamin Senderling, Ehyun Kim, Michael Rose, Mary Gheller, Tuhina Neogi, Deepak Kumar

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Article in Osteoarthritis and cartilage open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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Rhodora Therese Gumabao TorresDepartment of Physical Therapy, Boston University, Boston, MA, USA.

Benjamin SenderlingDepartment of Physical Therapy, Boston University, Boston, MA, USA.

Ehyun KimDepartment of Physical Therapy, Boston University, Boston, MA, USA.

Michael RoseDepartment of Physical Therapy, Boston University, Boston, MA, USA.

Mary GhellerSection of Rheumatology, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.

Tuhina NeogiSection of Rheumatology, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA.

Deepak KumarDepartment of Physical Therapy, Boston University, Boston, MA, USA.

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6 · The paper itself

Abstract

Objective: To assess the agreement between markerless and marker-based motion capture for measuring knee kinematics and kinetics during functional activities in people with knee osteoarthritis. Method: Data from 22 participants (age 63.2 ± 7.6 years; BMI 28.2 ± 4.7 kg/m Results: Across tasks, RMSD ranged from 3.8° to 5.7° for kinematics and 0.2 to 1.2%BW∗ht for kinetics, with joint center differences <5 cm. Agreements on knee adduction moment (KAM) impulse during both walking speeds (ICC = 0.94) and 2nd KAM peak during fast walking (ICC = 0.91) were excellent. Agreements on peak knee adduction angle (ICC = 0.78-0.83), sagittal knee range of motion (ICC = 0.78-0.83), 1st peak of knee flexion moment (KFM) (ICC = 0.76-0.81), and KAM (ICC = 0.87-0.90) were good, as well as, 2nd KAM peak during self-selected walking (ICC = 0.84), KFM impulse during fast walking (ICC = 0.84), and peak KFM during sit-to-stand (ICC = 0.78). Conclusion: The evaluated markerless system is a potential efficient alternative for estimating knee kinematics and kinetics for people with knee osteoarthritis, particularly for sagittal range of motion and frontal kinetics during walking, and sagittal moments in sit-to-stand.

Indexed as

Adduction momentArtificial intelligenceChair standGait

Identifiers

PMID42620590

DOI10.1016/j.ocarto.2026.100853

PMCPMC13485667

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