Postural Homeostasis is defined as: a state of equilibrium where the postural muscles function around their physiological resting lengths.

Army Study (2007-09) El Paso, Texas
The United States Army (at William Beaumont Army Medical Center in El Paso, Texas) is currently conducting a randomized, double blind study to evaluate the effectiveness of Rothbarts Insoles in controlling and/or eliminating the lower extremity problems seen, so frequently, in the recruits.  Part of this study involves duplicating the Cuernavaca Study, comparing the outcomes. Principal Investigator: Rebecca L Morrell 1Lt, SP, PT; Associate Investigator: Amy J Trevino, MPT MAJ, SP, PT.

Prof Rothbart presents his research on the Proprioceptive Loop (foot to brain connection), its impact on posture and the Primus Metatarus Supinatus foot type, in workshops all across Europe.  For more information contact him at:    rothbartsfoot@Yahoo.com

Current Research (Releasers vs Bracers)

Using pressure plate analysis, we have statistically identified two distinct tonicity patterns resulting from abnormal foot motion (specifically abnormal pronation resulting from the Primus Metatarsus Supinatus foot type): bracing and releasing. Bracers are identified by their elevated media pressure and lower surface area readings (i.e., cavus foot, hammertoes). Typically, they wear down the outside edges of their shoes (See Left Photo below). Releasers are identified by their depressed media pressure and higher surface area readings (i.e., pes planus foot, flaccid toes).  Typically, they wear down the inside edges of their shoes (See Right Photo below). (Differential diagnosis - bracers versus releasers)

             

  Bracer - Women's Shoe       Shoe Wear Patterns

Preliminary data suggests that the plantar surface of the 1st metatarsal and hallux act like a rheostat, adjusting the tonicity patterns in the postural muscles, foot to jaw. If the loading patterns underneath the hallux and 1st metatarsal are disturbed, a profound rippling effect is triggered up the postural chain resulting in adaptations/changes in postural tonicity.

Preliminary data suggests that afferent tactile (non-supportive type) insoles tend to shift the body toward postural homeostasis. 

Preliminary data suggests that mechanical (supportive type) insoles tend to shift the body away from postural homeostasis (Rothbart 2005) and destabilize (augment) the kyphotic and scoliotic curves in the spine (Fusco).

Dramatic changes in the progression of weight bearing forces has been demonstrated using Proprioceptive Insoles.

  • Rothbart BA, 2005 Pressure Plate Analysis of the Medial Column Insole. A Statistical Study. Online Journal of Sports Medicina (Italian), November Issue.
  • Rothbart BA 2005. Tactile therapy shifts patients towards equilibrium. Biomechanics.  Vol XII, No 10:61-68
  • Fusco MA, Fusco R, and Ambrosone M. 2001 Instrumental Evaluation of the Consequences on the Pelvis and on the Vertebral Column Caused by the Use of Various Orthotics, Performed by Means of the Posturographic Rug 3D VRS Formetric. KS ITALIA Studies’ and Research Center.