Thoracic Spine Pathology Flashcards
What percent of symptomatic disc herniations are thoracic disc
1%
What percent are asymptomatic disc protrusion
37%
What percent of patients returned to premorbid level of function after surgical repair of symptomatic thoracic disc herniation
77%
Who generally experiences a higher incidence of thoracic spine disorders
Females
What is the prevalence range of thoracic spine conditions at 12 months
15-34.8%
What is the prevalence of thoracic spin conditions in adolescents
41%
What is the general pathophysiology of scoliosis
Deformity of spinal column rather than a disease process
What is scoliosis named for
convexity and region
What does a type 1 dysfunction of scoliosis signify
Lateral curvature spine
What is a nonstructural scoliosis
Reversible lateral curvature
What is a structural scoliosis
Irreversible lateral curvature
What does a major curve equal
Primary curve
What does a compensatory curve equal
Secondary curve
What are the 3 types of idiopathic curve patterns
- Primary Lumbar
- Thoracolumbar
- Primary Thoracic
What percent of curve patterns are primary lumbar
23.6%
What percent of curve patterns are thoracolumbar
16%
What percent of curve patterns are primary thoracic
22.1%
Which curve pattern is not severely deforming and is between thoracic and lumbar
Thoracolumbar
What curve pattern is worst, progresses rapidly and is severe
Primary thoracic
What curve pattern is most benign and least deforming
Primary lumbar
How long does it take for a potential increase in the curve for primary thoracic
5 years
What causes nonstructural scoliosis (3)
- Posture
- Pain and muscle spasm
- Limb length discrepancy
What are the types of pain and muscle spasm that can cause nonstructural scoliosis (3)
- Painful lesion of spinal nerve root
- Painful lesion of spine
- Painful lesion of the abdomen
What are the 4 types of structural scoliosis
- Idiopathic scoliosis
- Osteopathic scoliosis
- Neuropathic scoliosis
- Myopathic scoliosis
What are the types of idiopathic scoliosis (3)
- Infantile
- Juvenile
- Adolescent
What percent of all scoliosis is idiopathic scoliosis
85%
When does infantile scoliosis occur
Birth to 3 years
When does juvenile scoliosis appear
4-9 years
When does adolescent scoliosis occur
10 to end of growth period
What are the 2 types of osteopathic scoliosis
- Congenital
2. Acquired
What are the divisions of congenital osteopathic scoliosis (2)
- Localized
2. Generalized
What causes acquired osteopathic scoliosis (3)
- Fractures
- Dislocations
- Rickets
What are the types of neuropathic scoliosis (2)
- Congenital
2. Acquired
What is an example of congenital neuropathic scoliosis
Spina bifida
What is an example of acquired neuropathic scoliosis
Cerebral palsy and paraplegia
What are the 2 types of myopathic scoliosis
- Congenital
2. Acquired
What causes congenital myopathic scoliosis
Hypotonia of neuromuscular origin
What is an example of congenital myopathic scoliosis
Spinal muscular atrophy
What is an example of acquired myopathic scoliosis
Muscular dystrophy
What pecent of the population has idiopathic scoliosis
0.5%
Which gender more commonly has infantile idiopathic scoliosis
Boys
Which gender more commonly has juvenile and adolescent idiopathic scoliosis
Girls
What are the characteristics of idiopathic scoliosis (3)
- Rapid progression in adolescents
- Can be slow, insidious, and painless
- As curve progresses wedge-shaped vertebrae form
Where do wedge shaped vertebrae form in people with idiopathic scoliosis
Concave side
How much does the degree of idiopathic change per year
As little as 1 degree
What is a normal curve for idiopathic scoliosis
Less than 10 degrees
What is a mild lateral curve for idiopathic scoliosis
Less than 30 degrees
What is a severe lateral curve for idiopathic scoliosis
Greater than 40 degrees
When is idiopathic scoliosis normally detected
roughly 30 degrees of curve
What is the Cobb Method
Find apex of curve then draw a right angle above and below apex and measure curve at cross of right angles
What is the angle measure during the Cobb method
Cobb angle
How do you address idiopathic scoliosis nonoperatively
Excercise, body cast, and braces
What are the 2 types of braces
- Milwaukee
2. Boston
What is the Milwaukee brace used for
Primary thoracic
What is the Boston brace used for (2)
- Lumbar
2. Thoracolumbar curves
What is the operative method to fix idiopathic scoliosis
Internal spinal instrumentation and fusion
When was Harrington Rodding found
1962
What are the 2 systems used for spinal fusion
- Cotrel-Dubousset (CD) system
2. Texas Scottish Rite Hospital (TSRH) system