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Accessory Navicular Wheeless

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Location: http://www.wheelessonline.com/ortho/accessory_navicular

Description: accessory navicular is an accessory ossicle of the foot which is located on the medial side of foot, proximal to the navicular and in continuity with the tibialis posterior tendon;
- approximately 2-12% of people may have this ossicle;
- accessory navicular generally does not ossify until 9 years of age, and in about one half of cases, the accessory navicular will go on to fuse to navicular;
- a valgus stress injury may fracture the attachment of the ossicle to the navicular resulting in abnormal motion;
- insertion of major portion of tibialis posterior tendon into accessory bone displaces tendon, allowing foot to deviate into a valgus position;
- this results in flatfoot w/ prominences of accessory bone& navicular;

Type: Reference Material
Author/Contact: Wheeless
Institution: Duke
Primary Subject/Category:

Language: English

Submitted by: admin
Hits: 536
Added: Sun Oct 28 2007