COF Spinal Orthotic Devices 3 — Questions and Answers
Question 1: A halo vest is indicated primarily for which of the following scenarios?
- Stable C5 compression fracture
- Unstable cervical fracture or post-surgical cervical fusion requiring rigid immobilization (Correct answer)
- Cervicogenic headache management
- Thoracic scoliosis in adults
Correct answer: Unstable cervical fracture or post-surgical cervical fusion requiring rigid immobilization
The halo vest provides the most rigid cervical immobilization available and is used for unstable cervical fractures or following complex cervical spine surgeries.
Question 2: Which cervical orthosis provides the least restriction of cervical range of motion?
- Halo vest
- SOMI brace
- Philadelphia collar
- Soft foam cervical collar (Correct answer)
Correct answer: Soft foam cervical collar
A soft foam cervical collar provides primarily proprioceptive feedback and warmth with minimal mechanical restriction of cervical motion.
Question 3: The SOMI (Sterno-Occipital-Mandibular Immobilizer) orthosis is best described as:
- A rigid lumbar corset with anterior panel
- A cervicothoracic orthosis that controls upper cervical flexion effectively without a posterior upright (Correct answer)
- A Milwaukee brace variant for cervical scoliosis
- A soft cervical collar with thermoplastic reinforcement
Correct answer: A cervicothoracic orthosis that controls upper cervical flexion effectively without a posterior upright
The SOMI brace uses sternal, occipital, and mandibular supports to control upper cervical flexion and is notable for lacking a posterior thoracic upright.
Question 4: For a patient with osteoporotic vertebral compression fracture at T8, which orthosis best combines fracture stabilization with ease of donning?
- Milwaukee brace
- Cruciform Anterior Spinal Hyperextension (CASH) orthosis (Correct answer)
- Halo vest
- Williams flexion orthosis
Correct answer: Cruciform Anterior Spinal Hyperextension (CASH) orthosis
The CASH orthosis uses sternal and pubic pads connected by a frame to prevent flexion with a simple anterior-only design that is easy for elderly patients to don.
Question 5: The Milwaukee brace differs from the Boston brace primarily because it:
- Is only used post-surgically
- Extends superiorly to include a cervical ring and throat mold for high thoracic curves (Correct answer)
- Controls lumbar flexion only
- Is made entirely of flexible thermoplastic
Correct answer: Extends superiorly to include a cervical ring and throat mold for high thoracic curves
The Milwaukee brace includes a neck ring and throat mold extending above the TLSO foundation, making it suitable for scoliotic curves with an apex at or above T8.
Question 6: A patient with acute lumbar muscle strain is prescribed a lumbosacral orthosis. Which feature provides the most direct mechanism for pain relief?
- Restricting all lumbar motion completely
- Increasing intra-abdominal pressure to unload lumbar discs (Correct answer)
- Correcting pelvic obliquity
- Applying traction forces to the lumbar vertebrae
Correct answer: Increasing intra-abdominal pressure to unload lumbar discs
An abdominal support panel in an LSO increases intra-abdominal pressure, which acts as a hydraulic mechanism to reduce compressive loads on lumbar discs and paraspinal muscles.
Question 7: When measuring a patient for a custom TLSO, the orthotist must capture which two critical bony landmarks as superior and inferior trim lines?
- Acromion and iliac crest
- Sternal notch and greater trochanter
- Axilla and pubic symphysis (Correct answer)
- Spinous process of C7 and ischial tuberosities
Correct answer: Axilla and pubic symphysis
A TLSO typically extends from just below the axilla superiorly to the pubic symphysis anteriorly and the gluteal fold posteriorly to control thoracolumbar motion effectively.
COF Spinal Orthotic Devices 3
A halo vest is indicated primarily for which of the following scenarios?