DPM Orthotic Device Prescription 3

Question 1

A pediatric patient has a medially deviated subtalar joint axis confirmed on gait analysis. Which orthotic device best addresses excessive pronation in this presentation?

Accepted Answer

Kirby medial heel skive technique

Answer

The Kirby medial heel skive shifts the subtalar joint axis laterally, increasing supination moments and reducing excessive pronation driven by a medially deviated axis.

Question 2

Which measurement is essential before prescribing a rigid functional foot orthosis for a patient with rearfoot varus?

Accepted Answer

Subtalar joint neutral position and total range of motion

Answer

Subtalar joint neutral position and range of motion determine the degree of posting needed and whether the joint can be placed in the corrected position.

Question 3

A patient has bilateral plantar fasciitis unresponsive to stretching and NSAIDs. Which orthotic feature is most evidence-supported for this condition?

Accepted Answer

Heel cushion with medial arch support

Answer

Prefabricated or custom orthotics with heel cushioning and medial longitudinal arch support have the strongest evidence for plantar fasciitis management.

Question 4

Which orthosis type is most appropriate for a patient with posterior tibial tendon dysfunction (PTTD) Stage II?

Accepted Answer

Arizona AFO or custom UCBL with deep heel cup

Answer

Stage II PTTD (flexible flatfoot with tendon dysfunction) requires rigid medial support such as an Arizona AFO or UCBL to control excessive pronation and offload the tendon.

Question 5

When casting for a functional foot orthosis using the suspension casting technique, the subtalar joint should be held in what position?

Accepted Answer

Neutral position

Answer

The subtalar joint is held in neutral position during suspension casting to capture the ideal biomechanical alignment of the foot.

(DPM) Doctor of Podiatric Medicine Practice Test

(DPM) Doctor of Podiatric Medicine Practice Test

DPM Orthotic Device Prescription 3