Welcome to the Podiatry Arena forums

You are currently viewing our podiatry forum as a guest which gives you limited access to view all podiatry discussions and access our other features. By joining our free global community of Podiatrists and other interested foot health care professionals you will have access to post podiatry topics (answer and ask questions), communicate privately with other members, upload content, view attachments, receive a weekly email update of new discussions, access other special features. Registered users do not get displayed the advertisements in posted messages. Registration is fast, simple and absolutely free so please, join our global Podiatry community today!

  1. Everything that you are ever going to want to know about running shoes: Running Shoes Boot Camp Online, for taking it to the next level? See here for more.
    Dismiss Notice
  2. Have you considered the Critical Thinking and Skeptical Boot Camp, for taking it to the next level? See here for more.
    Dismiss Notice
  3. Have you considered the Clinical Biomechanics Boot Camp Online, for taking it to the next level? See here for more.
    Dismiss Notice
Dismiss Notice
Have you considered the Clinical Biomechanics Boot Camp Online, for taking it to the next level? See here for more.
Dismiss Notice
Have you liked us on Facebook to get our updates? Please do. Click here for our Facebook page.
Dismiss Notice
Do you get the weekly newsletter that Podiatry Arena sends out to update everybody? If not, click here to organise this.

Functional Leg Length Difference Linked to Gravity Drive Pronation

Discussion in 'Biomechanics, Sports and Foot orthoses' started by Brian A. Rothbart, Nov 27, 2019.

  1. Brian A. Rothbart

    Brian A. Rothbart Active Member


    Members do not see these Ads. Sign Up.
    Published statistical research studies have validated the following chain of pathomechanical events:
    • Gravity drive pronation (pathognomonic of the PreClinical Clubfoot Deformity and Primus Metatarsus Supinatus foot structure, Rothbart 2010) drives the innominate bone anteriorly
    • The more pronated foot is ipsilateral to the more anteriorly rotated innominate bone (Rothbart 2006)
    • The more anteriorly rotated innominate bone is ipsilateral to the shorter leg (Cummings G, Scholz JP 1993)
    Gravity drive pronation pattern of right > left results in a functionally short right leg (FLLd right short)
    Gravity drive pronation pattern of left > right results in a functionally short left leg (FLLd left short)

    Significance of these findings:
    • Treat the etiology of the FLLd, e.g., the PreClinical Clubfoot Deformity or the Primus Metatarsus Supinatus foot structure
    • Do not use heel lifts to treat the symptoms, e.g., the FLLd

    Cummings G, Scholz JP et al 1993. The Effect of Imposed Leg Length Difference on Pelvic Bone Symmetry. Spine Vol 18:3, pp 369-373.
    Rothbart BA 2006. Relationship of Functional Leg-Length Discrepancy to Abnormal Pronation. Journal American Podiatric Medical Association;96(6):499-507
    Rothbart BA 2010. The Primus Metatarsus Supinatus (Rothbarts) Foot and the PreClinical Clubfoot Deformity.Podiatry Review, Vol. 67(1):
     
  2. Brian A. Rothbart

    Brian A. Rothbart Active Member

    Leg Length Difference is divided into two distinct categories:
    1. Functional LLd
    2. Anatomical LLd
    Functional Leg Length difference (FLLd)
    • FLLd is a symptom that results from an asymmetrical rotation of the innominates
    • Heel platforms are counterindicated
    • The underlying cause of the anterior rotation of the innominates needs to be treated directly
    • Two of the most common causes of anterior innominate rotation are: the PreClinical Clubfoot Deformity and the Primus Metatarsus Supinatus foot structure
    Anatomical Leg Length difference (ALLd)
    • ALLd is a true difference in the length pattern of the legs.
    • It is a primary cause and may require direct intervention
    • If required, use a foot platform under the short leg


     
Loading...

Share This Page