Quiz Results Comparison

1) Excessive lordosis may be seen in a transfemoral prosthetic user, if this is not accommodated for in socket alignment.

a) Socket adduction

b) Socket abduction

c) Socket flexion

d) Socket extension

• O&P Study Guide’s Answer: c) Socket flexion

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 625-626). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

2) Anterior translation of the tibia with respect of the femur, may result in an injury to which ligament?

a) Excessive socket abduction

b) Excessive socket adduction 

c) Foot is too inset

d) Foot is too outset

e) a. and c.

f) b. and d.

• O&P Study Guide’s Answer: f) Excessive socket adduction and Foot is too outset

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 389). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

3) What is the recommended bench alignment for the transfemoral socket in the sagittal plane to ensure comfort?

a) 0°

b) 5°

c) 10°

d) 15°

• O&P Study Guide’s Answer: b) 5°

4) The transtibial user experiences knee hyperextension during terminal stance through pre-swing of gait. What may be the cause of this gait deviation?

a) Prosthetic foot is too far inset

b) Prosthetic foot is too far outset

c) Excessive dorsiflexion of the prosthetic foot

d) Excessive external rotation of the prosthetic foot

e) Excessive plantarflexion of the prosthetic foot

• O&P Study Guide’s Answer: e) Excessive plantarflexion of the prosthetic foot

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 389). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

5) An excessively stiff plantar flexion bumper may result in this gait deviation during loading response phase of gait on the prosthetic side.

a) External foot rotation

b) Internal foot rotation

c) Excessive varus moment

d) Drop off

• O&P Study Guide’s Answer: a) External foot rotation

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 392). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

6) Performing a Thomas Test prior to fabrication of a transfemoral prosthesis can be beneficial. What is the primary purpose of the Thomas Test?

a) To evaluate hip extensor range of motion

b) To evaluate hip extensor strength

c) To evaluate hip flexor strength

d) To evaluate hip flexor range of motion

• O&P Study Guide’s Answer: d) To evaluate hip flexor range of motion

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 625-626). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

7) Amputees with a knee disarticulation benefit from this type of prosthetic knee as it provides enhanced stability and accommodation of a long residuum.

a) Single Axis

b) Stance-control

c) Polycentric

d) Manual Lock

e) None of the above

• O&P Study Guide’s Answer: c) Polycentric

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 424). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

8) True or False: Fluid-controlled knees are available in single-axis or polycentric configurations.

a) True

b) False

•  O&P Study Guide’s Answer: a) True

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 795). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

9) Despite the disadvantages of expense and need for strict routine maintenance, these types of prosthetic knees offer instantaneous responsiveness and a wide range of adjustability.

a) Four-Bar knees

b) Polycentric knees

c) Constant friction knees

d) Microprocessor knees

• O&P Study Guide’s Answer: d) Microprocessor knees

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 794). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

10)  True or False: The hip joint is attached directly to the socket/frame, so that it is sufficiently posterior to the acetabulum so that the weight bearing line falls anterior to the hip axis in standing.

a) True

b) False

• O&P Study Guide’s Answer: b) False, rather the correct placement is as follows, the hip joint should be placed anterior to the acetabulum (not posterior) so that the weight bearing line falls posterior to the hip axis during standing.

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 569). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

11)  The amputee states that they feel like they are walking up a hill, what may be causing this?

a) Toe lever is too long, due to excessive anterior placement of the foot

b) Toe lever is too short, due to excessive posterior placement of the foot

c) Excessive external rotation of the toe

d) Excessive internal rotation of the toe

• O&P Study Guide’s Answer: a) Toe lever is too long, due to excessive anterior placement of the foot

• Citation: Smith, D. G., Michael, J. W., & Bowker, J. H. (2004, p. 389). Atlas of amputations and limb deficiencies: Surgical, Prosthetic, and Rehabilitation Principles. American Academy of Orthopaedic Surgeons.

Now that you have compared your quiz results to the answers provided, take note of the questions you answered incorrectly. These questions highlight areas where you may need to focus your study efforts. Review the explanations and notes accompanying the answers to gain a better understanding of the correct concepts and refine your knowledge in those areas.

Remember, learning is an ongoing process, and identifying areas for improvement will help you target your studies effectively. Use this opportunity to refine your understanding and deepen your knowledge for future assessments. Check out our courses for a guided review, more questions, and detailed answers.

Keep up the good work!