MSK

Question 1

ACL PCL attachment

Answer 1

Fibula marks lateral
PCL attaches medial femoral condole to post tibia
ACL attaches lateral femoral coddle to Ant intercondylar tibia

Question 2

Trendelenberg gait

Answer 2

2o giving IM injections superiomedially
Injuring superior gluteal L4-S1

Question 3

In post hip dislocation which structure is vulnerable

Answer 3

Sciatic nerve

Symptom:- fall in elderly or after car accident. Leg will be held in flexion, adduction, internal rotation and will be shorter

Question 4

Rigor mortis cellular cause

Answer 4

Failure of myosin head to detach from actin filament results in diffuse muscle stiffening
Actin myosin cross bridge formation that cannot dissolve without ATP
Calcium binding to tropomysin facilitating cross bridge formation

Question 5

Fracture at pterion which artery is vulnerable

Answer 5

Pterion is region where frontal, parietal, temporal and sphenoid bones meet.

Middle meningeal artery branch ion the maxillary artery ( which is a terminal branch of the ext carotid artery) is at risk