XX Congresso Nazionale AIP Sanremo 22/25 aprile 2005 - Podologia
ORE 10.30 Primus Metatarsus Supinatus (Rothbart’s Foot). Il suo impatto sulle persone anziane. Podoiatra Ing. Biomeccanico Brian A. Rothbart (Photo)

Photos - Embryological Foot Types





Primus Metatarsus Supinatus (rothbart's Foot Structure)

In 2002, Professor Brian A. Rothbart published a paper (Journal Bodyworks and Movement Therapy) describing a previously unreported embryological foot type (technically referred to as the Primus Metatarsus Supinatus Foot), which he linked to the failed or incomplete torsional development of the talus. This foot type is thought to be responsible for poor posture in children and chronic musculoskeletal problems (foot to jaw) in the adult.  

A (1) deep first web space (See Figure 1 Below), (2) positive Knee Bend Test and (3) lateral heel wear patterns, provide a 90-95% level of confidence that you are dealing with a Primus Metatarsus Supinatus foot type. 


However, a definitive diagnosis for the Primus Metatarsus Supinatus (PMs) foot type is made by measuring the PMs values (See Figures 2-3 Below).  PMs values between 10mm and 25mm (approximately ½ to 1 inch) are pathognomonic of the PMs foot type (Rothbart's Foot Structure).  (Measurements between 30 and 55mm are linked to the Preclinical Clubfoot Deformity [PCFD] and greater than 60mm, to the Clubfoot Deformity).



Fig 3 -  Microwedges are calibrated triangles used to measure (in millimeters) the Primus Metatarsus Supinatus (PMs) Values.