-
What are the articular surfaces of the carpometacarpal of the thumb?
trapezium with 1st metacarpal
-
What is the joint classification of the CMC, and what motions are available?
modified biaxial, saddle
- flex/ext (frontal plane; parallel to palm)
- abd/add (sagittal plane; perpendicular to palm)
- opposition/reposition (combo of flex, abd, rotation)
- small amt of rotation
-
What are the articulations of the metacarpophalangeal jt of the thumb?
1st metacarpal with proximal phalanx
-
What type of joint is the MCP of the thumb, and what mvmts are available?
-
What are the articulations of the interphalangeal joint of the thumb?
proximal phalanx with distal phalax
-
What type of joint is the IP of the thumb, and what motions are available?
- uniaxial hinge joint
- flex/ext
-
What are the articulations of the carpometacarpal joint of the 2nd digit?
metacarpal with trapezoid
-
What are the articulations of the carpometacarpal joint of the 3rd digit?
metacarpal with capitate
-
What are the articulations of the carpometacarpal joint of the 4th digit?
hamate
-
What are the articulations of the carpometacarpal joint of the 5th digit?
metacarpal with hamate
most mobile out of digits 2-5
-
What type of joint are the carpometacarpal jts of the digits, and what motion do you get?
- nonaxial, irregular
- gliding
more stability than mobility
-
What are the articulations of the metacarpophalangeal jts of the digits?
- knuckles
- metacarpal with proximal phalanx
-
What type of joint are the MCP joints of the digits, and what type of mvmt do you get?
condyloid, biaxial
- flex/ext (sagittal plane)
- abd/add (middle finger reference point and has no add.) (frontal plane)
- circumduction
-
Where are the interphalangeal joints f the digits located?
- between phalanges
- PIP, DIP
- thumb only has one, digits have 2
9 total in 1 hand, 18 in both
-
What type of joint are the IP joints, and what types of mvmts occur?
-
The proximal end of the phalanges are called what?
base
-
The distal end of the phalanges are called what?
head
-
What does the flexor retinaculum ligament do?
- holds flexor tendons to wrist
- spans ant. (palmar) side of wrist
-
What are the 2 divisions of the flexor retinaculum ligament?
- transverse carpal ligament
- palmar carpal ligament
-
What is the transverse carpal ligament for?
deeper, more distal
arches over the carpal bones forming a tunnel for the median n....if this tunnel compresses, you will end up with carpal tunnel syndrome (CTS)
-
What is the palmar carpal ligament for?
more proximal and superficial on ant. surface
prevents bow stringing of the flexor tendons (keeps them together)
-
What ligament holds the extensor tendons to the posterior surface of the wrist?
extensor retinaculum ligament
-
What ligament is on the posterior side of the hand and goes from the proximal phalanx to the base of the distal phalanx (an aponeurosis)?
extensor expansion ligament
-
What is the eminence on the meaty part of the palm by the thumb (palmar side)?
thenar
atrophies with carpal tunnel
-
What is the eminence on the meaty part of the palm by the pinky (palmar side)?
hypothenar
-
How do you find your anatomical snuffbox?
abduct and hyperextend thumb
-
What is the functional position (optimal strength and precision) of the hand?
- slight wrist extension
- MCPs and DIPs are slightly flexed
- thumb opposed
|
|