NBCOT Registered Occupational Therapists (OTR) Quiz: Orthotic Selection
20 questions · exam conditions
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Orthotic SelectionQuestion 1 of 20

A 55-year-old client with osteoarthritis (OA) of the right thumb carpometacarpal (CMC) joint reports pain with pinching and gripping activities, such as opening jars and turning keys. The client wants to continue their hobby of gardening.

Which orthosis would BEST support the affected joint during activity while maximizing hand function?

A forearm-based thumb spica splint immobilizing the wrist and thumb.
A resting hand splint.
A hand-based thumb spica splint that immobilizes the CMC joint.
A wrist cock-up splint.
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NBCOT Registered Occupational Therapists (OTR) Quiz

NBCOT Registered Occupational Therapists (OTR) Quiz: Orthotic Selection

Practice Orthotic Selection in NBCOT Registered Occupational Therapists (OTR) with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Orthotic Selection, giving you a quick way to practice the rules, question types, and explanations that matter most for NBCOT Registered Occupational Therapists (OTR).

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

All questions

Question 1

A 55-year-old client with osteoarthritis (OA) of the right thumb carpometacarpal (CMC) joint reports pain with pinching and gripping activities, such as opening jars and turning keys. The client wants to continue their hobby of gardening.

Which orthosis would BEST support the affected joint during activity while maximizing hand function?

  1. A forearm-based thumb spica splint immobilizing the wrist and thumb.
  2. A resting hand splint.
  3. A hand-based thumb spica splint that immobilizes the CMC joint. (correct answer)
  4. A wrist cock-up splint.
Explanation: A hand-based thumb spica splint is the best option because it specifically supports and immobilizes the painful CMC joint while leaving the wrist and fingers free for movement. This provides stability to the thumb during functional tasks like gardening, reduces pain, and allows for maximum participation in the desired occupation.

Question 2

An OTR is treating a client who sustained a full-thickness burn to the dorsum of the right hand. The client is in the acute phase of recovery, and the primary goal is to prevent deformity.

Which orthosis is essential to fabricate for this client to prevent contracture?

  1. A resting pan splint with fingers in full extension.
  2. An antideformity splint (intrinsic plus position). (correct answer)
  3. A dynamic flexion splint to maintain tendon glide.
  4. A C-bar splint to maintain the thumb web space.
Explanation: For dorsal hand burns, the antideformity or intrinsic plus position is critical to prevent contractures. This position involves wrist extension (15-30°), MCP flexion (70-90°), and PIP/DIP full extension. This position places the collateral ligaments of the MCP and IP joints at their maximal length, which is crucial for preventing the common post-burn claw hand deformity.

Question 3

A 60-year-old client with rheumatoid arthritis (RA) is experiencing an acute flare-up with significant pain, swelling, and warmth in the wrists, MCP, and PIP joints bilaterally. The client reports difficulty sleeping due to pain.

What is the PRIMARY purpose of an orthosis for this client during this acute phase?

  1. To increase wrist and finger range of motion.
  2. To correct ulnar deviation deformity at the MCP joints.
  3. To immobilize the joints in a functional position to reduce inflammation and pain. (correct answer)
  4. To provide dynamic assistance for weak finger extensors.
Explanation: During an acute RA flare-up, the primary goal of orthotic intervention is to rest the inflamed joints to decrease pain and inflammation. A resting hand splint is used to immobilize the wrist, MCPs, and PIPs in a functional position, which supports the structures and can prevent contracture formation. The focus is on pain relief and joint protection, not mobilization or correction, which would be contraindicated during acute inflammation.

Question 4

A 58-year-old client with a 10-year history of rheumatoid arthritis (RA) presents with moderate, flexible ulnar deviation at the MCP joints and early swan neck deformities in the index and long fingers. The client wants an orthosis to wear during the day to improve their ability to perform light homemaking tasks and gardening.

Which orthotic design BEST balances joint protection with the functional demands of the client's desired activities?

  1. A rigid, volar-based resting hand splint to provide maximum joint rest and inflammation control.
  2. A set of silver ring splints designed to block PIP hyperextension on the affected digits.
  3. A soft, neoprene ulnar deviation correction splint with finger separators and wrist support. (correct answer)
  4. A custom thermoplastic wrist cock-up splint with the wrist positioned in 20° of extension.
Explanation: This client requires an orthosis that addresses the primary deformity (ulnar deviation) while allowing for function. A soft, prefabricated ulnar deviation splint provides gentle realignment of the MCPs without completely restricting movement, making it suitable for daytime, functional use. While silver ring splints (B) address the swan neck deformity, they do not address the ulnar deviation. A resting splint (A) is non-functional for daytime tasks. A wrist cock-up (D) does not address the finger deformities.

Question 5

A 25-year-old client sustained a radial nerve palsy after falling asleep with their arm over the back of a chair. They present with wrist drop and an inability to extend the MCPs and thumb. The client is a student and needs to be able to type and write notes. The nerve is expected to recover in 6-8 weeks.

Which orthosis would provide the optimal balance of functional substitution and joint mobility during the recovery period?

  1. A static volar wrist cock-up splint holding the wrist in 30° of extension.
  2. A low-profile dynamic wrist and MCP extension splint. (correct answer)
  3. A serial static splinting regimen to gradually increase passive wrist extension.
  4. A resting pan splint to prevent contractures, worn continuously except for exercise.
Explanation: The goal for a recoverable radial nerve palsy is to provide functional substitution while awaiting nerve return. A dynamic wrist and MCP extension splint (e.g., Colditz or similar design) holds the wrist in extension but also has an outrigger component that dynamically assists MCP and thumb extension. This allows the client to actively flex their fingers for grasp (e.g., holding a pen) and then relax, letting the splint lift the fingers and wrist for release. This facilitates functional tasks like typing and writing. A static splint (A) improves wrist position but does not address the lack of finger extension for release, limiting function.

Question 6

An OTR is evaluating a 45-year-old client who sustained a mid-shaft humeral fracture 3 weeks ago. The client now presents with an inability to extend the wrist and fingers, consistent with a radial nerve palsy. The primary goal is to improve function in ADLs while awaiting nerve recovery.

Which orthosis is MOST appropriate for this client to facilitate functional hand use?

  1. A static wrist cock-up splint in 30 degrees of extension.
  2. A dynamic wrist and MCP extension outrigger splint. (correct answer)
  3. A resting hand splint to prevent contractures.
  4. An ulnar nerve palsy splint to prevent MCP hyperextension.
Explanation: The most appropriate orthosis is a dynamic wrist and MCP extension outrigger splint. This orthosis provides passive extension to the wrist and digits, substituting for the paralyzed extensor muscles. This allows the client to use their intact flexor muscles to grasp objects and then relax to allow the dynamic component to open the hand for release, thereby improving functional use of the hand during recovery.

Question 7

A client is referred to occupational therapy 3 days after a Zone II flexor tendon repair of the long finger. The surgeon's protocol calls for an early active motion program. The OTR is fabricating an orthosis to be worn continuously.

What is the MOST appropriate orthosis to fabricate for this client's stage of healing?

  1. A dorsal blocking splint with the wrist in 20-30 degrees of flexion and MCPs in 50-70 degrees of flexion. (correct answer)
  2. A volar-based wrist cock-up splint with the wrist in neutral.
  3. A dynamic splint with rubber band traction to pull the DIP and PIP joints into flexion.
  4. A hand-based thumb spica splint to immobilize the CMC joint.
Explanation: A dorsal blocking splint is the standard of care for a Zone II flexor tendon repair. It protects the repaired tendon by preventing full wrist and finger extension, which would put excessive tension on the repair. The specified joint positions (wrist and MCP flexion) place the flexor tendons in a shortened, slackened position, minimizing stress during healing and controlled motion exercises.

Question 8

An OTR is working with a client who has a complete C6 spinal cord injury. The client has active wrist extension but no active finger function. The client's goal is to be able to pick up utensils for self-feeding.

Which orthosis would be MOST effective to help this client achieve their goal?

  1. A resting hand splint to maintain joint alignment.
  2. A universal cuff to hold utensils.
  3. A wrist-driven flexor hinge splint (tenodesis splint). (correct answer)
  4. A dynamic MCP extension outrigger splint.
Explanation: A wrist-driven flexor hinge splint, also known as a tenodesis splint, is the most appropriate choice. It utilizes the client's active wrist extension to create passive finger flexion, allowing for a functional three-jaw chuck grasp. This directly addresses the client's goal of picking up objects like utensils by harnessing their existing motor function.

Question 9

A client is diagnosed with De Quervain's tenosynovitis and reports sharp pain at the radial side of the wrist, especially when lifting their toddler. A positive Finkelstein's test is noted during the evaluation.

Which orthosis is MOST appropriate to manage this client's symptoms?

  1. A short opponens thumb splint.
  2. A wrist cock-up splint with the wrist in 20° extension.
  3. A forearm-based thumb spica splint with the thumb abducted. (correct answer)
  4. An ulnar gutter splint.
Explanation: De Quervain's tenosynovitis involves the tendons of the first dorsal compartment (abductor pollicis longus and extensor pollicis brevis). A forearm-based thumb spica splint is the most effective choice as it immobilizes both the wrist and the thumb CMC and MCP joints, resting the inflamed tendons and reducing pain during functional activities.

Question 10

A client is diagnosed with carpal tunnel syndrome and complains of waking up at night with numbness and tingling in the thumb, index, and middle fingers. The symptoms are relieved by shaking the hand.

What is the MOST appropriate orthosis to recommend for this client's primary complaint?

  1. A forearm-based thumb spica splint to be worn during the day.
  2. A wrist cock-up splint in 0-10 degrees of extension to be worn at night. (correct answer)
  3. A dynamic wrist flexion splint to stretch the carpal ligament.
  4. A resting hand splint with fingers fully extended.
Explanation: For carpal tunnel syndrome, a wrist cock-up splint worn at night is the standard conservative intervention. Positioning the wrist in a neutral to slightly extended position (0-10°) maximizes the space within the carpal tunnel, which reduces pressure on the median nerve and alleviates nocturnal symptoms of paresthesia.

Question 11

A client with an ulnar nerve injury at the wrist presents with a claw hand deformity, characterized by MCP hyperextension and IP flexion in the ring and small fingers. This posture interferes with their ability to grasp large objects.

Which orthosis is specifically designed to improve function by correcting this deformity?

  1. A radial gutter splint.
  2. An anti-spasticity ball splint.
  3. A resting hand splint in the intrinsic plus position.
  4. An MCP flexion block splint (anti-claw splint). (correct answer)
Explanation: An MCP flexion block splint (anti-claw splint) is the most appropriate choice. It prevents hyperextension of the 4th and 5th MCP joints. By blocking this movement, it allows the extrinsic extensor force to be transmitted to the IP joints, facilitating finger extension and improving the hand's ability to open for grasping objects.

Question 12

A client who sustained a traumatic brain injury presents with moderate flexor spasticity in their right hand, resulting in a tightly fisted hand that is difficult to open for hygiene. The OTR notes no joint contractures at this time.

Which type of orthosis is MOST appropriate to manage tone and improve hygiene for this client?

  1. A dynamic finger extension splint.
  2. A wrist-driven flexor hinge splint.
  3. An anti-spasticity ball splint or cone splint. (correct answer)
  4. A dorsal blocking splint.
Explanation: An anti-spasticity ball splint or a cone splint is designed to manage flexor tone. These splints position the hand with the fingers abducted and extended over a curved surface, which can help reduce the stimulation that triggers a strong grasp reflex. This positioning maintains the palmar arch and can make it easier to perform passive range of motion and hygiene care for the palm.

Question 13

A client is 5 days post-operative from MCP joint arthroplasty for severe rheumatoid arthritis. The surgeon has requested an orthosis to protect the implants, maintain alignment, and allow for controlled motion.

What is the MOST appropriate orthosis to fabricate at this stage?

  1. A static resting hand splint to completely immobilize the hand.
  2. A dynamic MCP extension outrigger with a radial pull. (correct answer)
  3. A series of static-progressive casts to increase flexion.
  4. A hand-based thumb spica splint.
Explanation: Following MCP arthroplasty, a dynamic orthosis with an extension outrigger is used to protect the new joints while promoting healing and function. The dynamic component provides passive MCP extension to assist weak extensor muscles and protect the extensor hood mechanism. The radial pull component is crucial for counteracting the tendency for ulnar drift, thus maintaining proper alignment of the prosthetic joints.

Question 14

A client is 6 months post-elbow fracture and has developed a significant elbow flexion contracture with a hard end-feel. The client's active and passive elbow extension is limited to -45 degrees. The client is motivated to improve their range of motion.

Which type of orthosis is the BEST choice for increasing elbow extension for this client?

  1. A static posterior elbow splint worn at night.
  2. A dynamic elbow flexion splint.
  3. A static-progressive or dynamic elbow extension splint. (correct answer)
  4. An anterior elbow conformer for skin integrity.
Explanation: For a chronic contracture with a hard end-feel, an orthosis that applies a low-load, prolonged stretch is most effective. Both static-progressive and dynamic elbow extension splints achieve this. They apply a constant, gentle force to the tissue at its end range, stimulating tissue growth and gradually increasing joint range of motion over time.

Question 15

A client has been diagnosed with trigger finger of the middle finger, characterized by painful catching of the finger in flexion. The OTR recommends a conservative approach using an orthosis.

What is the MOST appropriate orthosis to reduce symptoms of trigger finger?

  1. A splint that blocks the MCP joint in slight flexion, preventing full flexion. (correct answer)
  2. A splint that immobilizes the PIP and DIP joints in extension.
  3. A dynamic splint that assists with finger extension.
  4. A hand-based thumb spica splint.
Explanation: Trigger finger is caused by inflammation of the flexor tendon sheath at the A1 pulley, located at the level of the MCP joint. An orthosis that blocks the MCP joint from flexing fully prevents the inflamed nodule on the tendon from passing through the pulley, thus allowing it to rest and the inflammation to subside. The PIP and DIP joints are left free to move.

Question 16

A client is 2 days post-op from a Dupuytren's fasciectomy of the ring and small fingers. The surgeon's orders are for the fabrication of a protective orthosis to be worn at night and during the day between exercise sessions.

Which orthosis is MOST appropriate to fabricate for this client?

  1. A volar-based hand splint with the affected fingers in full extension. (correct answer)
  2. A dorsal blocking splint with the MCPs in 70 degrees of flexion.
  3. A dynamic flexion splint for the affected fingers.
  4. An anti-claw splint blocking MCP hyperextension.
Explanation: Following a Dupuytren's fasciectomy, the primary goal of the orthosis is to maintain the length of the surgically released tissues and prevent flexion contractures from recurring. A volar-based hand splint that holds the wrist and affected digits in maximal comfortable extension is the standard of care. This position provides a continuous stretch to the healing palmar fascia.

Question 17

A child is born with a mild congenital thumb-in-palm deformity. The pediatric OTR determines that a non-invasive, conservative approach using an orthosis is the first line of treatment to encourage thumb abduction and opposition.

Which type of orthosis is MOST suitable for this child?

  1. A resting hand splint.
  2. A forearm-based thumb spica splint.
  3. A soft thumb abduction splint or strap. (correct answer)
  4. A dynamic MCP flexion splint.
Explanation: For a mild, flexible congenital thumb-in-palm deformity, a soft thumb abduction splint is often the first choice. It is less restrictive than a rigid forearm-based splint, is generally better tolerated by infants and young children, and gently positions the thumb in abduction to stretch the tight adductor and flexor muscles, encouraging more functional use.

Question 18

A 30-year-old carpenter is diagnosed with acute lateral epicondylitis. The client reports significant pain over the lateral epicondyle when lifting tools or making a fist. The OTR decides to fabricate an orthosis as part of the initial intervention.

Which orthosis is indicated to rest the affected muscles during this acute phase?

  1. An elbow strap (counterforce brace) worn just distal to the epicondyle.
  2. A posterior elbow immobilization splint at 90 degrees of flexion.
  3. A volar wrist cock-up splint with the wrist in 30-45 degrees of extension. (correct answer)
  4. A dynamic wrist and finger extension splint.
Explanation: Lateral epicondylitis involves inflammation of the common extensor tendon at the lateral epicondyle. A wrist cock-up splint, by positioning the wrist in extension, reduces the tension on the extensor wad muscles (especially the extensor carpi radialis brevis). This effectively rests the inflamed tendon origin, decreasing pain and promoting healing.

Question 19

An OTR is treating a client with a stable boutonniere deformity of the PIP joint of the ring finger. The deformity is passively correctable. The goal of orthotic intervention is to correct the deformity.

Which orthosis should the OTR fabricate to meet this goal?

  1. A splint that blocks PIP flexion while allowing DIP flexion.
  2. A splint that immobilizes the DIP joint in flexion.
  3. A splint that holds the PIP joint in continuous extension while allowing active DIP flexion. (correct answer)
  4. A dynamic splint that provides a flexion force to the PIP joint.
Explanation: The correct orthotic management for a passively correctable boutonniere deformity is to immobilize the PIP joint in full extension to allow the central slip to heal. It is critical to allow the DIP joint to move through active and passive flexion exercises during this time to prevent stiffness and help restore the balance of the extensor mechanism.

Question 20

A client with chronic rheumatoid arthritis presents with a flexible swan neck deformity in the index finger, which causes the PIP joint to snap during flexion and interferes with grasp.

Which type of orthosis would be MOST effective for improving this client's hand function?

  1. A static PIP extension block splint.
  2. A figure-8 or silver ring splint. (correct answer)
  3. A dynamic PIP flexion assist splint.
  4. A resting hand splint.
Explanation: A figure-8 or silver ring splint is designed specifically to address swan neck deformity. It works by preventing PIP hyperextension while allowing full PIP flexion. By blocking the hyperextension, it corrects the joint's alignment and allows for a smoother, more functional arc of motion for grasping objects.