MSK Flashcards
what is the function of the patella
leg extension and protection
what is the attachments, actions and innervation of sartorious muscle
ASIS to superior/medial tibia
flexor/abductor/lateral rotator
femoral nerve
name the 4 muscles of the quadriceps and where do they all insert
- vastus lateralis
- vastus intermedius
- vastus medialis
- rectus femoris
= insert at quadricep femoris tendon
what actions does rectus femoris produce when contracting
flex hip straighten knee
what actions do the vastus muscles produce when contracting
extend the knee
what direction does the patella move during contraction of the quadriceps when the knee is straight
laterally
what action avoids lateral dislocation of the patella
vastus medialis muscle fibres contract = pull patella inwards -= counteract lateral movement
what passive mechanism avoids lateral dislocation of the patella
lateral part of groove for patella is more prominent = greater mechanical resistance
name the 5 hip adductors and where do they arise from
- gracilis
- obturator externus
- adductor brevis
- adductor longus
- adductor magnus
= pubis bone
name the contents of the femoral triangle = NAVEL
- femoral nerve
- femoral artery
- femoral vein
- empty space
- femoral canal
what forms the roof and base of the femoral triangle
roof = fascia lata base = pectineus, iliopsoas, adductor longus
name the 3 hamstring muscles
- biceps femorus
- semintendonus
- semimembranosus
what structures travel through the greater sciatic foramina
sciatic nerve
periformis muscle
what bone do we sit on
ischial tuberosity
what movements are necessary to remain stable when walking and what muscles are responsible
abduction of hip = gluteus medius, gluteus minimus, tensor fascia lata
move foot to midline
what area is the safest for injections in the buttock
upper outer quadrant
what area is dangerous for injections in the buttock and why
lower medial quadrant because damage to sciatic nerve
where is the popliteal fossa
behind the knee
what areas does the sciatic nerve supply
posterior thigh
all structures below the knee
what does the sciatic nerve divide into in the lower 1/3rd of the thigh
tibial nerve
common perineal nerve/fibula nerve
what are the most superior muscles in the posterior part of the leg
gastrocnemius muscles
describe the divisions of the popliteal artery
anterior tibial = ant compartment
posterior tibial = posterior compartment
peroneal = lateral compartment
