Moderate Pes Planus


The D Quad foot type is a moderately over-pronated foot type with the following features:

  • Vertical heel alignment from Compensated Rearfoot Varus.
  • Normal or neutral forefoot alignment.
  • Low arch.
  • Pronation through Midstance and then late supination with propulsion off the 2nd and 3rd Metatarsal.
  • Calluses may form to the 2nd metatarsal and base of the 5th metatarsal.
  • Approximate presentation in US population is 18%.

The Quad D foot type is often diagnosed as "Pes Planus" (Flat Foot) in adults or "Developmental Flat Foot" or flexible flat foot in children.

CHILD PRESENTATION:  This is an unstable foot type that usually remains as a flat foot after the age of 3-4 when the arch forms.  This is a foot type that will usually not be "out-grown" over time.  The best way to determine the progression of the child's foot is to evaluate older siblings feet or ask Mom and Dad to remove their shoes and socks. 

WALKING PATTERN: Walks similar to Fred Flinstone (for those that remember him)


  • Plantar Fasciitis
  • Metatarsalgia
  • Functional Hallux Limitus
  • Patellofemoral Pain Syndrome
  • Posterior Tibial Tendonitis
  • Neuromas
  • Dorsal Bunions

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Brandt R Gibson, DPM
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Podiatrist, Neuropathy Doctor, Father of 11 and Founder of Mountain West Foot & Ankle Institute