Orthoteers homepage Advertise on Orthoteers
Orthoteers Junior Orthoteers Orthopaedic Biomechanics Orthopaedic World Literature Society Educational Resources Image Gallery About Orthoteers Orthoteers Members search

Sesamoids

  • Named sesamoid bones because of resemblance to sesame seeds
  • Most constant sesamoids are those under 1st MTP joint, but can be present under other metatarsal heads
  • Develop by endochondral ossification
  • Ossification by age 8-12 yrs of age, females earlier
  • Multiple ossification centres which don't always fuse
  • Fibular sesamoid rarely partite
  • Tibial sesamoid bipartite in 10% of population, a quarter of whom have bilateral tibial bipartite sesamoids
  • Named sesamoid bones because of resemblance to sesame seeds
  • Most constant sesamoids are those under 1st MTP joint, but can be present under other metatarsal heads
  • Develop by endochondral ossification
  • Ossification by age 8-12 yrs of age, females earlier
  • Multiple ossification centres which don't always fuse
  • Fibular sesamoid rarely partite
  • Tibial sesamoid bipartite in 10% of population, a quarter of whom have bilateral tibial bipartite sesamoids

    • Central ridge, crista divides the under surface/trochlear surface of the 1st MTP joint, divides the two sesamoids
    • Medial and lateral metatarsaosesamoid ligaments and medial and lateral phalangosesamoid ligaments and intersesamoid ligaments are stabilisers
    • The sesamoids are embedded in the plantar plate in the plantar plate with attached to prox phalanx inferiorly by insertions of medial and lateral heads of flexor hallucis
    • The fibular sesamoid also attached to adductor hallucis, and intermetatarsal ligament
    • The tibial sesamoid is attached to abductor hallucis


  • This is a preview of the site content. To view the full text for this site, you need to log in.
    If you are having problems logging in, please refer to the login help page.


    © 2005-2007 Orthoteers.co.uk - last updated by Len Funk on 09 February 2005Medical Merketing and SEO by Blue Medical 
    Biomet supporting orthoteersThe British Orthopedic Association supporting OrthoteersOrthoteers is a non-profit educational resource. Click here for more details
    Accessory Bones
    Adult Hallux Valgus
    Amputations of the Foot & Ankle
    Anatomy of the Foot & Ankle
    Ankle Arthritis
    Ankle Fractures
    Ankle Instability
    Ankle Sprains
    Arthritis in Children
    Arthrodeses of the Foot & Ankle
    Arthroscopy of the Foot & Ankle
    Bibliography
    Biomechanics of the Foot & Ankle
    BOFSS Syllabus for FRCS (Tr & Orth)
    Bunionettes
    Calcaneal Fractures
    Compartment Syndrome
    Diabetic Foot
    Foot & Ankle Hyperbook
    Foot & Heel Pain
    Freiberg's disease
    Hallux Rigidus
    Hyperkeratotic Pathology of the Pla...
    Lesser Toe Deformities
    Lisfranc Fractures
    Morton's Neuroma
    OCD & Osteochondoses of the Foot & ...
    Other Foot Fractures
    Peroneal Tendon Injuries
    Rheumatoid Foot
    Rheumatoid Forefoot
    Sesamoids
    Sinus Tarsi Syndrome
    Soft Tissue Impingement
    Tarsal Tunnel Syndrome & Nerve Entr...
    Tendo Achilles Disorders
    tendo achilles references
    Tendon Disorders
    Hide Menu