Lumber Spine Flashcards
What is the nerve root level of the lumber plexus?
T12,L1 to L4
What is the nerve root level of the sacral plexus?
L4 to S4
What is the nerve root level of the sciatic nerve?
L4 to S3
What is the nerve root level of the pudendal nerve?
S2 to S4
What is the nerve root level of the lateral femoral cutaneous nerve?
L2/3
What is the nerve root level of the tibial branch of the sciatic nerve?
L4 to S3
What is the nerve root level of the fibular branch of the sciatic nerve?
L4 to S2
What is the nerve root level of the femoral nerve?
L2,3,4
What is the nerve root level of the obturator nerve?
L2,3,4
Which muscles (motor) does the anterior compartment of the femoral nerve innervate? Level
Sartorius, Pectineus, lliacus
L2/3
Which muscles (motor) does the posterior compartment of the femoral nerve innervate? Level
Quadriceps
The sciatic nerve bifurcates at which apex? Into which branches?
Apex of the popliteal fossa.
Tibial and fibular branches of the sciatic nerve
Describe the 2 cutaneous branches of the femoral nerve and what areas of the skin they innervate.
Saphenous cutaneous nerve (medial leg, ankle and foot)
Anterior cutaneous nerve (innervates the anterior compartment of the leg)
What is the motor and sensory supply of the pudendal nerve?
Motor supply
A branch of the pudendal nerve, the inferior rectal nerve, provides motor supply to the external anal sphincter and urethral sphincter.
Sensory supply
The pudendal nerve supplies sensation to external genitalia of both sexes and the skin around the anus, anal canal and perineum.
Damage to the sensory supply of the pudendal nerve results in which condition?
saddle anesthesia
The short head of the biceps femoris is supplied by which nerve?
Common fibular nerve
The long head of the biceps femoris and two medial hamstrings are supplied by which nerve?
tibial nerve
Which nerve innervates the muscles of the lateral compartment of the leg?
Superficial fibular nerve
Which nerve innervates the muscles of the anterior compartment of the leg?
Deep fibular nerve
Which nerve innervates the muscles of the Posterior compartment of the leg?
Tibial nerve
The cutaneous supply to the posterior compartment of the leg is provided by which 2 nerves?
The Lateral sural cutaneous nerve (common fibular nerve)
The medial cutaneous nerve (branch of the tibial nerve)
The sural nerve supplies sensation to which area of the body?
Posterior compartment of the leg and the lateral ankle
Which muscles contribute towards the formation of the popliteal fossa?
Medial and lateral hamstrings
Two heads of the gastrocnemius
Describe the 4 contents of the politeal fossa
Medial to lateral
Popliteal artery, vein, fibular nerve
Which nerves supply the motor supply to the foot?
The medial and lateral planter nerves
Branch of the tibial nerve
Which nerve innervates the 1st lumbricle, the flexor digitorum brevis, flexor hallucus brevis
Medial planter nerve
Damage to the lateral femoral cutaneous nerve results in which condition?
meralgia paresthetica
Where will you find the Iliolumbar ligament?
Between the Iliac crest and the TP of /L4L5
Which movement accounts for the greatest increase of disc pressure? A. Coughing B. Walking C. Side bending D. Flexion
A. Flexion
What is the nerve root for the inferior gluteal nerve?
L5-S2
Which muscle is innervated by the Inferior gluteal nerve?
Gluteus maximus
What is the nerve root for the inferior gluteal nerve?
L4 to S1
Which muscle is innervated by the superior gluteal nerve?
Glute medius, minimus, tfl
Which is the key lumbar collecting node for the lymphatic system?
- Thoracic duct
- Sentinel node
- Celiac
- Cisterna Chyli
- Thoracic duct
Where is the Sacral plexus in relation to the Sacrum?
- Anterior
- Posterior
- Medial
- Lateral
2.Posterior
Which of these are not hip bursa? subacromial Iliopsoas Trochanteric Gluteus medius
subacromial
Which nerve is compressed during Piriformis syndrome?
Sciatic
What ligament prevents extension of the hip?
Iliofemoral
All of the following pass behind the ischial spine except? A.Pudendal nerve B.Obturator nerve C.Internal pudendal vessel D.Nerve to obturator internus
B.Obturator nerve
The obturator nerve passes through which foramen?
Obturator
What is the nerve root level of the thoracolumber junction?
T12/L1
What type of curvature does the lumber spine adopt?
Lordotic
Which ligament resists hyperextension of the lumber spine?
Anterior longitudinal ligament
Which ligaments (4) resists hyperflexion of the lumber spine?
Posterior longitudinal ligament
Supraspinous ligament/Interspinous ligament
Ligamentum flavum
The ligamentum flavum joins?
Adjacent laminae together
Which ligament stabilises the L/S junction, preventing displacement of L5 on the sacrum?
IIiolumber ligament
Which ligament joins tp to tp?
Intertransverse ligament
Which nerve is responsible for innervation of the cremaster muscle? Level?
Genitofemoral nerve L1/2
Which nerves innervates the transverse abdominals and the internal obliques?
iliohypogastric and ilioinguinal nerves
Which nerve inneravates the quadratus lumborum?
T12, sub costal nerve
What is the outer layer of the inter vertebral disc called?
Annulus fibrosus
What is the inner layer of the inter vertebral disc called?
Nucleus polposus
Name three ways in which a disc can degenerate prematurely ?
- Ageing
- Poor manual handling
(flexion w/rotation) - Inactivity/overweight
Name four functions of the inter vertebral discs?
- Shock absorption
- Transmits loads
- Enables movements
- Joints adjacent vertebrae
- Weight bearing
Inter-vertebral discs are responsible for making up what % of the spinal column?
20 to 25%
Do inter-vertebral discs have a nerve supply?
A. Yes
B. No
B. No
What percentage of a disc is made from water?
75 percent
Which nerves inneraves the adductor magnus?
Tibial (L4) and obturator nerves
Dual supply
What is the spinal level of the thoracolumber outflow?
T1 to L2
The spinal cord enlarges at the lumber spine at what level?
L1 to S3
Anterior displacement of a vertebrae is called?
spondylolisthesis
Posterior displacement of a vertebrae is called?
retrolisthesis
bamboo spine is also known as?
ankylosing spondylitis