AFO Style Flashcards
UCBL (Univ of CA Berkley/Biomechanics Lab)
Allows for inversion and eversion without impingement on the malleoli
SMO (Supramalleolar Orthosis)
Trimlines superior to the superior border of the malleoli
Increased control in coronal plane compared to UCBL
Longer lever arm
Solid Ankle AFO
Proximal trimline inferior 20 mm distal to fibular head
Maximizes stability in coronal and sagittal planes
Assists with control of genu recurvatum
Lateral Sabolich Trimline
Controls flexible hindfoot varus
3 Point pressure system
Proximal tibia/medial calf
Lateral Sabolich
Medial 1st MTP
Ground Reaction AFO (Floor Reaction)
Alternative to KAFO
Knee extension moment though ground reaction forces and extended anterior lever arm (stance phase)
Footplate is rigid
Solid ankle, full footplate
Anatomical joint placement for an Articulated AFO
Distal tip of malleous
Metal Conventional AFO candidates
Multiple Sclerosis (MS)
Cerebral Palsy (CP)
Polio
Edema
At which joint and in which plane does the motion of inversion and eversion occur?
Subtalar (talcalcaneonavicular) joint, coronal plane
Which ligament maintains the medial longitudinal arch?
Spring Ligament (plantarcalcanealnavicular ligament)
Percentage of the gait cycle is spent in double limb support?
20%
The dorsiflexion stop performs the function of which muscle?
Gastrocnemius/soleus
Functions of the tibialis anterior muscles?
Dorsiflexion
Inversion
30 degrees of genu recurvatum
Two contraindications for plastic AFO’s
Uncontrolled edema, sensitive skin
