Talar Supinatus.  The ontogenetic torsional development of the talar head has prematurely ended (see black arrow). This foot structure is termed the Rothbarts Foot.

Talar Normalus.  The ontogenetic torsional development of the talar head has completed (see black arrow).  This foot structure is termed a plantargrade foot.

Unwinding of the Talar Head.  The difference between a Rothbarts Foot vs a Plantargrade Foot.

• If the talar head does not complete its ontogenetic torsional development (talar supintus), the first metatarsal and hallux remain structurally elevated and inverted position. 

• Clinically, this first metatarsal/hallux supinatus can be seen in the standing foot when the subtalar joint is placed into its anatomical neutral (joint congruity) position.

Varus alignment of the talar bone changes the position of the forefoot:

In 1996 Daniels et al published a paper describing a direct correlation between the varus alignment of the talar neck and the position of the forefoot.  On twelve cadaver feet, when they introduced a 17.1 (plus or minus) varus malalignment of the talar neck (via a medial based wedge osteotomy), it resulted in a 11.5 (plus or minus 2.4) degree adduction of the forefoot.

     Daniels TR, Smith JW, Ross TI 1996. Varus Malalignment of the Talar Neck. Its Effect on the Position of the Foot and on Subtalar Motion. Journal Bone Joint Surgery; 78: 1559 - 1567.

Professor/Dr.Brian A. Rothbart
Chronic Pain Elimination Specialist
Discovered the Rothbarts Foot and the PreClinical Clubfoot Deformity
Developer of Rothbart Proprioceptive Therapy
Inventor and Designer of Rothbart Proprioceptive Insoles
Founder of International Academy of Rothbart Proprioceptive Therapy
Author of Forever Free From Chronic Pain

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