O&P BOARD PREP: MOCK PROSTHETIC
WRITTEN EXAM QUESTIONS WITH CORRECT
ANSWERS 2026/2027
The Ertl procedure is known as an osteomyoplastic amputation reconstruction that
performs a bone bridge between what:
A) Tibia bridged with the fibula
B) Distal end of the radius and ulna
C) Distal end of femur bridged with the tibia
D) Humerus bridged with the ulna - CORRECT ANSWER -A) Tibia bridged with the fibula
A below knee amputee is seen in your clinic for a follow up appointment and states he
feels anterior/distal discomfort in his prosthetic socket. Choose all correct answer(s) to
address this problem:
A) Extend the prosthetic socket
B) Flex the prosthetic socket
C) Add pretibial pads to the prosthetic socket
D) Lower the posterior socket brim - CORRECT ANSWER -A) Extend the prosthetic
socket
C) Add pretibial pads to the prosthetic socket
A below knee amputee is seen in your clinic for a follow up appointment and states he
has posterior knee or hamstring discomfort. Choose all correct answer(s) to address this
problem:
A) Lower the posterior medial brim on the prosthetic socket
B) Extend the prosthetic socket
,C) Flex the prosthetic socket
D) Align prosthetic foot more posterior in relation to the prosthetic socket - CORRECT
ANSWER -A) Lower the posterior medial brim on the prosthetic socket
C) Flex the prosthetic socket
D) Align prosthetic foot more posterior in relation to the prosthetic socket
Which level(s) of amputation may lead to an equinus gait deformity:
A) Lisfranc amputation
B) Chopart amputation
C) Symes amputation
D) Transmetatarsal amputation - CORRECT ANSWER -A) Lisfranc amputation
B) Chopart amputation
D) Transmetatarsal amputation
A below knee amputee presents in clinic wearing a PTB style endoskeletal prosthesis
with general knee pain and distal end pressure. The patient doffs her prosthesis and
liner, upon
examination of her residual limb you note redness on the distal tibia and inferior aspect
of the patella bone. What would be the most logical clinical action(s) you could take at
this point in addressing this problem:
A) Recommend the patient be evaluated for a new liner that will provide better
cushioning to her residual limb
B) Flex the prosthetic socket while concurrently plantar flexing the prosthetic foot
C) Add a gastroc pad to prosthetic socket
D) Add a 1 ply prosthetic sock over liner - CORRECT ANSWER -C) Add a gastroc pad to
prosthetic socket
,D) Add a 1 ply prosthetic sock over liner
Myodesis can be described as:
A) A condition associated with calcification of muscle fibers
B) The suturing and permanent attachment of a muscle to a bone
C) The suturing or permanent attachment of a muscle to another muscle
D) A muscle going through atrophy - CORRECT ANSWER -B) The suturing and
permanent attachment of a muscle to a bone
Which of the following is not part of a Symes amputation procedure:
A) Removal of the malleoli "distal aspect"
B) Placement of thick heel pad
C) Amputation through the articulation of the ankle
D) Transmetatarsal amputation - CORRECT ANSWER -D) Transmetatarsal amputation
Myoplasty can be described as:
A) A condition associated with the loss of sarcomeres
B) The suturing and permanent attachment of a muscle to a bone
C) The suturing or permanent attachment of a muscle to another muscle
D) A muscle experiencing hypertrophy - CORRECT ANSWER -C) The suturing or
permanent attachment of a muscle to another muscle
What are two advantages in the list below of myodesis over myoplasty with regards to
amputations:
A) Decreased rate of infection related revisions
, B) Decreased rate of muscular atrophy
C) Decreased rate of antagonistic muscular imbalances
D) Provides a bulbous distal residual limb for self suspending applications in TT and TF
cases - CORRECT ANSWER -B) Decreased rate of muscular atrophy
C) Decreased rate of antagonistic muscular imbalances
During normal heel strike, the forward hip is how flexed:
A) neutral
B) 10 deg flexed
C) 25 deg flexed
D) 40 deg flexed - CORRECT ANSWER -C) 25 deg flexed
Which style of muscular tissue management in an TH amputation would be of greatest
advantage to a myoelectric prosthesis candidate:
A) Myodesis
B) Myoplasty - CORRECT ANSWER -A) Myodesis
A TF patient is seen in clinic that exhibits lateral/proximal loss of contact in stance. Upon
prosthetic fit examination it is noted the lateral wall is superior to the greater trochanter,
the
anterior wall contours to the adductor longus tendon, the posterior socket does not
encompass the ischial tuberosity, the medial wall is located 65mm inferior to the
perineum.
What do you attribute to the cause of this deviation:
A) The posterior wall does not have ischial containment
B) The lateral wall is located too proximal for an ischial containment socket
WRITTEN EXAM QUESTIONS WITH CORRECT
ANSWERS 2026/2027
The Ertl procedure is known as an osteomyoplastic amputation reconstruction that
performs a bone bridge between what:
A) Tibia bridged with the fibula
B) Distal end of the radius and ulna
C) Distal end of femur bridged with the tibia
D) Humerus bridged with the ulna - CORRECT ANSWER -A) Tibia bridged with the fibula
A below knee amputee is seen in your clinic for a follow up appointment and states he
feels anterior/distal discomfort in his prosthetic socket. Choose all correct answer(s) to
address this problem:
A) Extend the prosthetic socket
B) Flex the prosthetic socket
C) Add pretibial pads to the prosthetic socket
D) Lower the posterior socket brim - CORRECT ANSWER -A) Extend the prosthetic
socket
C) Add pretibial pads to the prosthetic socket
A below knee amputee is seen in your clinic for a follow up appointment and states he
has posterior knee or hamstring discomfort. Choose all correct answer(s) to address this
problem:
A) Lower the posterior medial brim on the prosthetic socket
B) Extend the prosthetic socket
,C) Flex the prosthetic socket
D) Align prosthetic foot more posterior in relation to the prosthetic socket - CORRECT
ANSWER -A) Lower the posterior medial brim on the prosthetic socket
C) Flex the prosthetic socket
D) Align prosthetic foot more posterior in relation to the prosthetic socket
Which level(s) of amputation may lead to an equinus gait deformity:
A) Lisfranc amputation
B) Chopart amputation
C) Symes amputation
D) Transmetatarsal amputation - CORRECT ANSWER -A) Lisfranc amputation
B) Chopart amputation
D) Transmetatarsal amputation
A below knee amputee presents in clinic wearing a PTB style endoskeletal prosthesis
with general knee pain and distal end pressure. The patient doffs her prosthesis and
liner, upon
examination of her residual limb you note redness on the distal tibia and inferior aspect
of the patella bone. What would be the most logical clinical action(s) you could take at
this point in addressing this problem:
A) Recommend the patient be evaluated for a new liner that will provide better
cushioning to her residual limb
B) Flex the prosthetic socket while concurrently plantar flexing the prosthetic foot
C) Add a gastroc pad to prosthetic socket
D) Add a 1 ply prosthetic sock over liner - CORRECT ANSWER -C) Add a gastroc pad to
prosthetic socket
,D) Add a 1 ply prosthetic sock over liner
Myodesis can be described as:
A) A condition associated with calcification of muscle fibers
B) The suturing and permanent attachment of a muscle to a bone
C) The suturing or permanent attachment of a muscle to another muscle
D) A muscle going through atrophy - CORRECT ANSWER -B) The suturing and
permanent attachment of a muscle to a bone
Which of the following is not part of a Symes amputation procedure:
A) Removal of the malleoli "distal aspect"
B) Placement of thick heel pad
C) Amputation through the articulation of the ankle
D) Transmetatarsal amputation - CORRECT ANSWER -D) Transmetatarsal amputation
Myoplasty can be described as:
A) A condition associated with the loss of sarcomeres
B) The suturing and permanent attachment of a muscle to a bone
C) The suturing or permanent attachment of a muscle to another muscle
D) A muscle experiencing hypertrophy - CORRECT ANSWER -C) The suturing or
permanent attachment of a muscle to another muscle
What are two advantages in the list below of myodesis over myoplasty with regards to
amputations:
A) Decreased rate of infection related revisions
, B) Decreased rate of muscular atrophy
C) Decreased rate of antagonistic muscular imbalances
D) Provides a bulbous distal residual limb for self suspending applications in TT and TF
cases - CORRECT ANSWER -B) Decreased rate of muscular atrophy
C) Decreased rate of antagonistic muscular imbalances
During normal heel strike, the forward hip is how flexed:
A) neutral
B) 10 deg flexed
C) 25 deg flexed
D) 40 deg flexed - CORRECT ANSWER -C) 25 deg flexed
Which style of muscular tissue management in an TH amputation would be of greatest
advantage to a myoelectric prosthesis candidate:
A) Myodesis
B) Myoplasty - CORRECT ANSWER -A) Myodesis
A TF patient is seen in clinic that exhibits lateral/proximal loss of contact in stance. Upon
prosthetic fit examination it is noted the lateral wall is superior to the greater trochanter,
the
anterior wall contours to the adductor longus tendon, the posterior socket does not
encompass the ischial tuberosity, the medial wall is located 65mm inferior to the
perineum.
What do you attribute to the cause of this deviation:
A) The posterior wall does not have ischial containment
B) The lateral wall is located too proximal for an ischial containment socket
