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Related Experiment Video

Updated: Sep 13, 2025

An Anatomical Study of Nerves at Risk During Minimally Invasive Hallux Valgus Surgery

An Anatomical Study of Nerves at Risk During Minimally Invasive Hallux Valgus Surgery

Published on: February 17, 2018

Rheumatoid Nodule on the Hallux.

Shusuke Matsumoto¹, Jun Arata¹, Teruyo Yamashita¹

¹Department of Plastic and Reconstructive Surgery, Shiga University of Medical Science, Shiga, Japan.

Journal of Plastic and Reconstructive Surgery

|August 4, 2025

Summary

This case study highlights a rare rheumatoid nodule on the foot, emphasizing the importance of careful observation for rheumatoid arthritis management. Early identification aids in distinguishing it from similar conditions like giant cell tumors.

Keywords:

giant cell tumor hallux rheumatoid arthritis rheumatoid nodule soft tissue tumor

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Last Updated: Sep 13, 2025

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Area of Science:

Rheumatology
Dermatopathology
Orthopedics

Background:

Rheumatoid nodules are common subcutaneous lesions in rheumatoid arthritis, typically found over pressure points.
Foot involvement, particularly on the plantar aspect, is exceptionally rare, reported in only 1% of cases.

Observation:

A 65-year-old woman with rheumatoid arthritis presented with a 15x10 mm, dome-shaped, nontender, elastic hard mass on the plantar side of her left hallux.
This presentation represents an unusual location for a rheumatoid nodule.

Findings:

The case details a rare instance of a rheumatoid nodule on the plantar hallux.
Differential diagnosis included giant cell tumors, which can present with similar clinical and imaging characteristics.

Implications:

Accurate identification of rheumatoid nodules is crucial for effective rheumatoid arthritis treatment and management.
Challenges in differentiating rheumatoid nodules from giant cell tumors using imaging necessitate careful clinical evaluation.