Surgical and Radiologic Anatomy

, Volume 34, Issue 1, pp 39–42 | Cite as

Intra-articular ossicle in interphalangeal joint of the great toe and clinical implication

  • P. Suwannahoy
  • T. Srisuwan
  • N. Pattamapaspong
  • Pasuk Mahakkanukrauh
Original Article


Failure of closed reduction for an interphalangeal joint dislocation of the great toe resulted from an intra-articular ossicle interposed between the articular cartilages of the phalanges. The knowledge concerning the intra-articular ossicle is unclear. A study was thus carried out on 100 fresh great toes to document the appearance, number, size, and location of the intra-articular ossicle found in the interphalangeal joint of the great toe. Roentgenographic studies of the joint revealed 86% of bony mass representing either the sesamoid bone or the intra-articular ossicle. Anatomical studies revealed no sesamoid bone in the flexor hallucis longus tendon. There was 88% of intra-articular ossicle on the dorsal surface of the plantar capsule of the interphalangeal joint. A medial surgical approach to reduce the irreducible dislocation is thus suggested as easier and safer than other approaches.


Intra-articular ossicle Dislocation of interphalangeal joint of great toe Failure of closed reduction 



The authors gratefully acknowledge the Department of Anatomy, Faculty of Medicine Chiang Mai University for samples. A special thanks is expressed to Dr. Chanintr Mahakkanukrauh the American Board of orthopedic to approve the manuscript. The authors have no conflict of interest.


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • P. Suwannahoy
    • 1
  • T. Srisuwan
    • 2
  • N. Pattamapaspong
    • 2
  • Pasuk Mahakkanukrauh
    • 1
  1. 1.Department of Anatomy, Faculty of MedicineChiangMai UniversityChaingMaiThailand
  2. 2.Department of Radiology, Faculty of MedicineChiangMai UniversityChaingMaiThailand

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