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Orthotics – 2025/2026 Complete Study Guide on Lower Limb Biomechanics, Foot Orthoses, AFOs, KAFOs, TLSOs, and Orthotic Prescription Principles

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This comprehensive orthotics study guide delivers a complete overview of lower limb biomechanics, orthotic types, and prescription strategies for clinical application. It covers gait cycle phases, ground reaction force influence, and alignment principles for ankle-foot orthoses (AFOs), including solid ankle, hinged, posterior leaf spring, and ground reaction designs. Students will learn about knee-ankle-foot orthoses (KAFOs)—locked knee, stance control, and offset joints—alongside functional goals, clearance, and torque considerations. Detailed content addresses thoracolumbosacral orthoses (TLSOs) for spinal stabilization and scoliosis correction, as well as foot orthoses (accommodative vs. functional), posting techniques, and modifications such as medial heel skives and deep heel cups. Clinical applications include orthotic intervention for drop foot, Charcot-Marie-Tooth disease, posterior tibial tendon dysfunction (PTTD), genu varum/valgum, and plantar fasciitis. The guide also covers materials science, orthotic fabrication methods, pediatric vs. adult fitting considerations, and long-term follow-up protocols. Ideal for orthotist certification candidates, physical and occupational therapy students, podiatry learners, and sports medicine professionals, this resource bridges foundational biomechanical theory with practical orthotic design and fitting techniques, making it an essential academic and clinical reference. Keywords: gait cycle biomechanics, ground reaction force, AFO types, hinged AFO, posterior leaf spring AFO, ground reaction AFO, KAFO types, stance control KAFO, offset knee joint, TLSO spinal orthosis, scoliosis bracing, foot orthosis posting, medial heel skive, deep heel cup, plantar fasciitis orthosis, PTTD orthosis, genu varum correction, genu valgum correction, orthotic materials, orthotic fabrication, pediatric orthotics

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Orthotics/Prosthetics/Gait
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Orthotics/Prosthetics/Gait
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Orthotics/Prosthetics/Gait

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Uploaded on
August 8, 2025
Number of pages
60
Written in
2025/2026
Type
Exam (elaborations)
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Questions & answers

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Orthotics/Prosthetics/Gait 2025/2026
Exam Questions and Correct Answers |
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20. Which of the following orthoses or shoe modifications is used in the

conservative management of plantar fasciitis? (a) Heel lift (b) Posterior night splint

(c) Lateral heel wedge (d) Metatarsal bar - 🧠 ANSWER ✔✔20 (b) A heel lift

plantarflexes the foot and is used for Achilles tendinitis. A metatarsal bar is used

for metatarsalgia. A lateral heel wedge can be used for the conservative

management of osteoarthritis of the knee. A posterior night splint dorsiflexed to 5/

is the correct answer.

30. During normal human locomotion, the center of gravity travels through a

sinusoidal pathway that is modified by 6 determinants of gait. Which of the

following is not considered 1 of the 6 determinants? (a) Pelvic extension (b) Foot

and ankle synchronization (c) Knee flexion (d) Lateral pelvic displacement - 🧠

ANSWER ✔✔30 (a) The 6 determinants are as follows: lateral displacement that

,reduces horizontal excursion from 6" down to 1.7"; knee flexion that reduces

vertical excursion 7/16"; pelvic rotation that reduces vertical excursion 3/8"; pelvic

tilt that reduces vertical excursion 3/16"; and foot and ankle synchronization as

well as ankle and knee synchronization that both serve to smooth out the sinusoidal

curve but do not decrease excursion.

39. The most common complication after amputation in the immature child is (a)

phantom limb pain. (b) diffuse edema. (c) terminal overgrowth. (d) painful

neuroma. - 🧠 ANSWER ✔✔39 (c) Terminal overgrowth at the transected end of a

long bone is the most common complication after amputation in the skeletally

immature child. It occurs most frequently in the humerus, fibula, tibia, and femur,

in that order. The oppositional growth may be so vigorous that the bone pierces the

skin. The treatment of choice is surgical revision.

40. A 79-year-old cachectic woman with coronary artery disease and unstable

angina sustains a right hip fracture after a fall. After an open-reduction internal

fixation of the hip joint with the use of a dynamic hip screw, the orthopedic

surgeon determines that the patient is 25% partial weight bearing to the right side.

She has weak upper body strength and good balance. Which of the following

assistive devices is most appropriate? (a) Standard walker (b) Rolling walker (c)

Axillary crutches (d) Quad cane - 🧠 ANSWER ✔✔40 (b) Standard walkers require

,good standing balance and good upper body strength. Crutches require good upper

body strength and have an increased energy expenditure of 40%-60%, which

would be contraindicated in unstable angina. Quad canes are not appropriate when

significant weight-bearing relief is required. Rolling walkers are most appropriate

for patients who lack upper body strength and provide safer gait than crutches or

canes.

59. In considering selection of a lower limb prosthesis for a child with a congenital

transfemoral amputation, a knee joint should be included (a) at initial fitting. (b)

between 3 to 5 years of age. (c) when sports activities are anticipated. (d) when the

child pulls to stand. - 🧠 ANSWER ✔✔59 (b) The lower limb deficient child should

be fitted with a prosthesis when he or she is ready to pull up to a standing position,

usually between 9 and 12 months. A knee joint is added between 3 and 5 years.

70. What level of amputation has the highest acceptance rate for an upper

extremity prosthesis? (a) Wrist disarticulation (b) Transradial (c) Elbow

disarticulation (d) Transhumeral - 🧠 ANSWER ✔✔70 (b) Overall rejection of

prosthetic usage occurs in 33%-38% of unilateral upper extremity amputees. The

highest acceptance rate is transradial at about 93%, and the lowest is wrist

disarticulation at about 6%.




COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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, 80. When considering realistic functional goals for the majority of transhumeral

amputees, the maximal weight (in pounds) that can be carried with the body-

powered prosthesis is (a) 7. (b) 15. (c) 30. (D) 50. - 🧠 ANSWER ✔✔80 (b)

Handling of heavy objects is limited in upper extremity amputees. A transhumeral

amputee is expected to lift 10lb to 15lb, unless the residual limb is very short or

sensitive. A transradial amputee is expected to lift 20lb to 30lb unless the residual

limb is very short or sensitive.

82. In the orthotic and prosthetic clinic, a patient with Parkinson's disease presents

for gait analysis. The primary gait disturbance found is an alternation in stride

length and altered cadence. A gaittraining program for a person with Parkinson's

disease should include (a) visual cueing techniques. (b) bilateral ankle-foot

orthoses. (c) patterning techniques. (d) vestibular stimulation exercises. - 🧠

ANSWER ✔✔82 (a) Treatment options for gait disturbance in patients with

Parkinson's disease include visual and auditory cueing, in addition to traditional

endurance and strengthening exercises.

100. When comparing quadrilateral sockets with ischial containment sockets, a

successful fitting ismore likely in a quadrilateral socket when (a) the adductor

musculature is intact. (b) the residual limb is fleshy. (c) trunk stability demands are

high at mid stance. (d) the residual limb is shorter. - 🧠 ANSWER ✔✔100 (a)

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