Espiral AtlasLateral tubercle of the posterior process of the talus
tuberculum laterale processus posterioris tali
Study entry
Description
The prominent tubercle on the outer side of the groove for the flexor hallucis longus.
Source: cap. 7, «Huesos del miembro inferior: huesos del pie: tarso»
Clinical correlation
Os trigonum
The secondary center that forms the lateral tubercle of the talus sometimes does not unite with the body of the bone, perhaps because of forced plantar flexion in adolescence; or the already ossified center breaks and does not heal. An accessory ossicle remains, the os trigonum, present in 14% to 25% of adults, almost always in both feet and more common in soccer players and dancers.
Related clinical cases
- Os trigonum