Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
45 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
Function of spine |
Provides the main support for body, allowing it to stand upright, bend and twist, while protecting the spinal cord from injury |
|
|
|
|
|
|
|
Purpose of cervical spine |
Is too support the weight of the head |
|
|
|
Function of thoracic |
Is to jold the rib cage and protect the heart and lungs. It has limited range of motion |
|
|
|
Lumbars function |
Is to beat the weight if the body |
|
|
|
Biggest vertebrae in the body |
Lumbar |
|
|
|
|
|
|
|
3 parts of vertebra |
1. Approximately cylindrical shaped Vertebral body 2.star shaped processes 3.hollow vertebral canal |
|
|
|
What's the function of 3 parts of vertebra |
Vertebral body: wistand compression Processes: for muscle attachment Vertebral canal : for spinal cord and nerves |
|
|
|
What are pedicles!? |
|
|
|
|
What does the outer ring of intervertebral disc? |
Annulus finrosus |
|
|
|
What are the 3 body planes called? |
|
|
|
|
Dorsal |
Back or posterior side of the body |
|
|
|
Ventral |
Front or anterior side if the body |
|
|
|
Paraplegia |
Paralysis of legs and lower body below arms indicating an injury to the thoracic or lumbar spine |
|
|
|
Quadeiplegia |
Paralysis of legs and arms indicating an injury to the cervical spine |
|
|
|
Non sergical treatment for scoliosis |
Monitor, bracing, casting under general anaesthetic |
|
|
|
Name the Key biomechanical functions of spine |
Maintenance of trunk stability Provide mobility Aid movement in the upper and lower limbs Protection of spinal cord |
|
|
|
Compressive load on spine= |
Weight +action of the posterior muscle |
|
|
|
Typical so pressie load on L4, 5 during level walking |
1.5 to 3 times BW |
|
|
|
Typical so pressie load on L4, 5 during standing or sitting |
1.5 to 2 times BW |
|
|
|
Shear force anterior - posterior |
Up to 20% of BW |
|
|
|
What is the functional spinal unit defined as |
An intervertebral Disc, the vertebrae either side and the interconnecting ligaments |
|
|
|
Movements in spine |
|
|
|
|
How many degrees in lateral flexion(left and right side bending) |
5-10° |
|
|
|
Degrees in axial rotation |
3° in lower thoracic and lumbar spines |
|
|
|
Paediatric spine fixers during walking and anterior-posterior shear |
1.5 to 3 during walking Upto 0.2 BW shear |
|
|
|
Suqgical/engineering solutions for scoliosis |
Staples to squeeze bones together Growth guidance system Traditional growing rods(surgery every 6-9 months) Magnetic growing rods (MAGEC) |
|
|
|
What does ligament do? |
Connects bone to bone. It's a tough fibrous material, provides stability and may limit motion. |
|
|
|
True or false Some spinal ligaments go from vertebrae to vertebrae; some run the length of the spine |
True |
|
|
|
True or false All ligaments have different strenght ( a single one can have different strenght at different points) |
True |
|
|
|
Scoliosis is more common in Girls or boys? |
Girls |
|
|
|
|
|
|
|
How big 8s the drive pin? |
0.8mm diameter |
|
|
|
Define strengths |
Is stability to wistand an apied load without failure or plastic deformation |
|
|
|
3 point bending equations |
|
|
|
|
Trust bearing only takes axial load |
True |
|
|
|
What is L10 |
Life of a millions of revolutions after which 10% of them will fail |
|
|
|
L10 equation |
|
|
|
|
In MAGEC its static load most of the time. It's dynamic when it's extending |
True |
|
|
|
O ring |
|
|
|
|
Purpose of o ring |
Prevent fluid in and out of the rod or both |
|
|
|
Buckling load of extending bar |
|
|
|
|
What class are MAGEC rods? |
Class IIb same as condoms and blood bags |
|
|
|
Extension for 90 and 70 mm |
90mm is 48mm 70mm is 28mm |
|
