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Updated: Jun 13, 2026

Surgical Approach and Complications of Stand-alone Lateral Trans-Psoas Interbody Fusion
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Published on: February 14, 2025

Painful os intermetatarseum.

Kevin M Smith1, Matt B Welch

  • 1College of Podiatric Medicine and Surgery, Des Moines University, Des Moines, IA 50312, USA. kevin.smith@dmu.edu

Journal of the American Podiatric Medical Association
|May 19, 2010
PubMed
Summary
This summary is machine-generated.

Accessory ossicles like the os intermetatarseum are typically benign. However, this uncommon foot bone may fracture or irritate tissues, potentially causing metatarsus primus varus.

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Area of Science:

  • Orthopedics
  • Radiology
  • Anatomy

Background:

  • Accessory ossicles are common incidental findings on foot radiographs.
  • While usually asymptomatic, they can cause pain and biomechanical issues.

Observation:

  • The os intermetatarseum is an uncommon accessory ossicle located between the first and second metatarsal bases.
  • This ossicle's development is not fully understood.

Findings:

  • The article reviews theories on the development of the os intermetatarseum.
  • It explores the potential role of this ossicle in causing metatarsus primus varus.

Implications:

  • Understanding the os intermetatarseum's etiology is crucial for diagnosing foot pain.
  • Recognizing this ossicle's association with metatarsus primus varus may guide treatment strategies.