Radiocarpal
primary and secondary motion
flex/ext, radial/ulnar dev
what structures make up the midcarpal joint
proximal and distal carpal bones
motions available at this joint
flexion/extension , abd/add
motions available at joint
flexion,extension
Name a person
good job!
type of joint/DOF
Condyloid/2 DOF
Which structures pass through the carpal tunnel
4 FDP tendons, 4 FDS tendons, PL tendon, median nerve
type of joint/DOF
Condyloid/2 DOF
T or F: Digits 1-4 each have 2 IP joints
F: digit 1 has one IP joint
You lose 200 points womp womp
teehee
normal ROM values for movements
Flex- 65-85, Ext- 60-85
Rad- 15-21, Uln- 20-45
gimme extensor compartments 1-3
1 = APL & EPB
2 = ECRL & ECRB
3 = EPL
normative values for ROM?
Flexion- 90, extension- 20-45
what is the function of the volar plate
limit hyper extension of the IP joint
whoever does the best bullfrog impression gets the points
meow good job
articulating surfaces
distal radius, TFCC
proximal carpal bones (scaphoid, lunate, triquetrum)
Explain the DISI phenomenon
•Dorsal intercalated segmental instability (DISI) = lunate extension
Scapholunate ligament disrupted
•Scaphoid flexes
•Lunate & triquetrum extend
•DISI more common than VISI
•Scapholunate advanced collapse
articulating surfaces
convex metacarpal head - proximal phalanx
why does the DIP have greater flexion when the PIP is flexed
FDP tendon- mechanical advantage
Who would win in a fight? A grizzly bear or a silverback gorilla?
bear, it has claws
Describe the arthrokinematic motion that happens at the radiocarpal joint during flexion
convex scaphoid and lunate roll volarly and glide dorsally on concave radius
Describe the arthrokinematic motion that happens at the midcarpal joint during ulnar deviation
proximal carpal bones glide radialy and extend (scaphoid), distal row rolls as fixed unit ulnarly
describe the arthrokinematic motion for flexion at this joint
concave phalanx proximal rolls and glides volarly on convex distal metacarpal bone
how does the ROM change in each individual digit across the hand
greater ROM available toward ulnar side
Greece
Would also accept Australia, Yellowstone, or Endor (the Ewok planet from Star Wars)