XR 105 Midterm
| Question | Answer |
|---|---|
| which portion of the scottie dog represents the pars interarticularis | the neck |
| which portion of the scottie dog represents the superior articular process? | the ear |
| which portion of the scottie dog represents the inferior articular process | the front leg |
Likewise, people ask, what part of Scottie dog is the pars interarticularis?
the pars interarticularis (the portion of the lamina that lies between the facets) equivalent to the neck of the dog.
Additionally, what does the nose of the Scotty dog represent? The Scotty dog sign is demonstrated with oblique projections of the thoracic and lumbar spine. The "nose" of the Scotty dog represents the spinous process of a lumbar vertebra.
Similarly, you may ask, which vertebral structures form the Scottie dog?
Butterfly vertebrae
The posterior elements of the vertebrae form the impression of a Scottie dog. The nose of the dog is the transverse process, the eye is the pedicle, the neck is the pars interarticularis, the front leg is the inferior articular facet, and the ear is the superior articular facet [2].
What part of the Scotty dog forms the Zygapophyseal joint?
Lumbar/Sacrum/Coccyx - Scotty dog
| Question | Answer |
|---|---|
| What forms the front leg of the Scotty dog? | one inferior articular process |
| What forms the pointed ear of the Scotty dog? | one of the superior articular processes |
| What does the front leg and ear of the Scotty dog form? | zygapophyseal joint |
Related Question Answers
Can a pars defect heal?
A pars defect takes about six to 12 weeks to heal but it could take up to six months to see a full recovery.Where is the pars interarticularis found?
The pars interarticularis (pars) lies between the superior and inferior articular process bilaterally at each vertebral level. Anatomically, one can describe the pars as the region between two, one superior and one inferior, zygapophyseal joints.What is a pars defect in the spine?
A pars defect or spondylolysis is a stress fracture of the bones of the lower spine. These fractures typically occur due to overuse. They can be on one or both sides of the vertebrae. It is a common cause of low back pain in children and adolescents.Can pars defect be hereditary?
The reason for this is not entirely known, but there is thought to be a congenital disposition to these fractures in some people. In fact, this injury runs in families, with up to 30% of first degree relatives (parents and children) of people who have had a pars defect also having one.What is the Scottie dog in spine?
The Scottie dog sign (often seen spelled Scotty but Scottie is the correct spelling) refers to the normal appearance of the lumbar spine when seen on oblique radiographic projection. On oblique views, the posterior elements of the vertebra form the figure of a Scottie dog with: the transverse process being the nose.What is pars Articularis?
Pars interarticularis refers to a small segment of bone that joins the facet joints in the back of the spine. A defect in this portion of the spine leads to a condition called spondylolysis.What is the most common treatment for spondylolisthesis injury?
Surgery for back pain due to spondylolisthesis typically involves spinal decompression, with or without fusion. Decompression alone is almost never done in isthmic spondylolisthesis. Studies show fusion with decompression may give better outcome than decompression alone.What is the difference between Spondylolysis and spondylolisthesis?
Spondylolysis is a breakdown or fracture of the pars interarticularis. Spondylolisthesis is the slipping forward of the vertebral bone. The term "listhesis" means to slip forward (Fig.What is another name for Scotty dog deformity?
Lumbar spondylolysis (LS) is a bony defect of the pars interarticularis that occurs in approximately 6% of the general population and is identified more frequently in athletes1-3).What can you do for spondylolisthesis?
Treating spondylolisthesis- wearing a back brace.
- doing physical therapy exercises.
- taking over-the-counter or prescription anti-inflammatory drugs (such as ibuprofen) to reduce pain.
- using epidural steroid injections.
What is the name of the most distal or caudal portion of the spine?
XR 105 Midterm| Question | Answer |
|---|---|
| what is the name of the most distal portion of the spine? | the coccyx |
| which 2 portions of the vertebrae come together to form the posterior portion of the vertebrae, the "vertebral arch" | the pedicle and the lamina |
| the vertebral arch is formed by | the pedicle and the lamina |
Which portion of the spine is made up of five vertebrae and has a Lordotic curve?
The lumbar spine bends inward to create a C-shaped lordotic curve. Sacrum: This triangle-shaped bone connects to the hips. The five sacral vertebrae (S1 to S5) fuse as a baby develops in the womb, which means they don't move. The sacrum and hip bones form a ring called the pelvic girdle.What is spondylolysis?
Spondylolysis is a stress fracture through the pars interarticularis of the lumbar vertebrae. The pars interarticularis is a thin bone segment joining two vertebrae. It is the most likely area to be affected by repetitive stress.What is the purpose of the articular processes of the vertebrae?
The functional significance of the articular processes is obviously to limit rotation, which can take place in the lumbar segment of the vertebral column during any asymmetrical movement of the body.Where can you found the dens?
The odontoid process (also dens or odontoid peg) is a protuberance (process or projection) of the Axis (second cervical vertebra). It exhibits a slight constriction or neck, where it joins the main body of the vertebra.Why should the hips and knees be flexed for an anteroposterior AP projection of the lumbar spine?
Why should the hips and knees be flexed for an anteroposterior (AP) projection of the lumbar spine? For patient comfort and To reduce the lumbar curvature (both A and B) If the patient has scoliosis, the convexity of the spine should be down toward the image receptor for the lateral spine projection.What is a Zygapophyseal joint?
Applied anatomyZygapophyseal joints are the only synovial joints in the spine, with hyaline cartilage overlying subchondral bone, a synovial membrane and a joint capsule; they comprise the postero-lateral articulation between vertebral levels (Figure 1). The joint space has a potential capacity of 1 to 2 ml.
What are pars fractures?
A pars defect or spondylolysis is a stress fracture of the bones of the lower spine. These fractures typically occur due to overuse. They can be on one or both sides of the vertebrae. It is a common cause of low back pain in children and adolescents.How do you measure a slip angle for spondylolisthesis?
Slip is measured by dividing amount of displacement of cephalad vertebra by diameter of caudad vertebral body, expressed as percentage. Another important measurement is the determination of the degree of kyphosis between the involved segments, or the slip angle.What type of joint movement occurs with the Zygapophyseal joints?
| Type | Intervertebral disc joint: Cartilaginous joint; symphysis Zygapophyseal joint: Synovial plane joint, nonaxial, uniplanar |
|---|---|
| Blood supply | Segmental arteries |
| Movements | Flexion, extension, lateral flexion and axial rotation of the vertebral column |
Which set of Zygapophyseal joints of the lumbar spine is best demonstrated with an LAO position?
Final review Lumbar| Question | Answer |
|---|---|
| Which specific set of Z joints is demonstrated with an LAO position | Right upside |
| The ____, which is the eye of the "scottie dog" should be near the center of the vertebral body on a correctly obliqued L spine | Pedicle |
Which of the following conditions would be indicated by the appearance of a collar on the Scotty dog on an oblique lumbar spine radiograph?
The oblique lumbar spine anatomy typically has the appearance of a "scotty dog" when the patient is positioned correctly. Spondylolysis is a condition in which there is a cleft in the pars interarticularis of a lumbar or cervical vertebra. The pars interarticularis corresponds to the neck of the scotty dog.What is the pedicle?
Pedicles. Each vertebra has two cylinder-shaped projections (pedicles) of hard bone that stick out from the back part of the vertebral body, providing side protection for the spinal cord and nerves. The pedicles also serve as a bridge, joining the front and back parts of the vertebra.What is Isthmic spondylolisthesis?
Isthmic Spondylolisthesis is a spinal condition in which one vertebra slips forward over the vertebra below. It is caused by a defect, or fracture, of the pars interarticularis; a bone connecting the upper and lower facet joints.Which projection of the lumbar spine displays the vertebrae in the form of a Scottie dog?
VERTEBRAL COLUMN| Question | Answer |
|---|---|
| Which projection of the lumbar spine displays the vertebrae in the form of a Scottie dog? | AP and PA oblique |
| What is the central ray angulation for an AP axial protection of the lumbosacral junction? | 30-35 degrees cephalic |
| The central ray angular ion for a PA sacrum is ? | 15 degrees caudal |
