midterm Flashcards
the concave (the moving bone) on convex theory is true for which joint
humeroulnar
which plane does rotation occur in the anatomical position
transverse
what is in the subacromial space
long head biceps tendon
subacromion bursa
supraspinatus tendon
what carpal bone is part of the radiocarpal joint
triquetrum
if your carrying angle at elbow is lower than normal it is called
cubitus VARUS
higher than normal - VALGUS
the interphalangeal joints are what kind of joint
uniaxial
what joint involves the head of the ulna
distal radioulnar
what is the first metacarpal joint
triaxial
3 biomechanical properties
simple
complex
compound
5 functions of synovial fluid
reduce friction
shock absorber
lubricates cavity
supplies O2 and nutrients
takes away CO2
what do tendon sheaths do
reduce friction at joints
3 factors affecting contact in a synovial joint
- structure or shape of articulating bones
- contact of soft parts
- strength/tension of ligaments around joint
what is the result of a total joint reaction
capsular pattern of restriction
what do joint kinesthetic receptors monitor
stretch in synovial joint and send info to brain for a response
SC joint type
saddle/ plane
multiaxial
AC joint type
plane
triaxial
coracoclavicular ligament has which 2 parts
trapezoid
conoid
loose packed position of GH
40-55 abduction
30 horizontal adduction in scapular plane
closed packed position of GH
full abduction w lateral rotation
what is the roof of the subacromial space
coracoACROMIAL ligament
loose packed of scapulothoracic
when arm is resting at the side
no closed packed
phase 1 scapulothoracic rhythm
humerus 30 degrees ABDUCTION
scap is min movement
clavicle 0-5 degrees elevation
phase 2 of scapulothoracic rhythm
humerus 40 degrees ABDUCTION
scap 20 degrees upward rotation
clavicle 15 degrees elevation
phase 3 of scapulothoracic rhythm
humerus 60 degrees ABDUCTION
30 degrees rotation scapula
clavicle 30-50 posterior rotation
15 upward elevation
what mm’s do abduction of shoulder
middle delt
supraspinatus
what mm’s do adduction of GH
teres minor
lats
what mm’s do internal rotation
subscapularis
pec major
lats
what mm’s do external rotation
infraspinatus
teres minor
how many degrees of abduction is done by humerus and how may degrees in done by scapula
humerus - 130
scapula - 50
artic surfaces of SC joint
CONVEX sternal head of clavicle
CONCAVE manubrium of sternum
AC joint artic surfaces
CONVEX acromion
CONVEX lateral clavicle
scapulothoracic artic surfaces
CONCAVE subscap fossa
CONVEX posterior ribs
humeroULNAR artic surfaces
CONCAVE trochlear notch of ulna
CONVEX trochlea of humerus
loose packed position HUMEROULNAR
70 DEGREES FLEXION
10 DEGREES SUPINATION
closed packed HUMEROULNAR
extension
supination
capsular pattern of restriction for HUMEROULNAR
flexion, extension
ROM OF ELBOW - flexion
140-150
ROM OF ELBOW - supination and pronation
supination = 90
pronation = 80-90
ROM OF ELBOW - extension
0-10
humeroRADIAL artic surfaces
CONCAVE radial head
CONVEX capitulum of humerus
humeroradial loose packed position
full extension w supination
humeroradial closed packed position
elbow flexed 90 degrees
forearm supinated to 5 degrees
capsular pattern of restriction humeroradial
flexion
extension
supination
pronation
proximal radioulnar artic surfaces
CONVEX radial head
slightly CONCAVE radial notch of ulna
loose packed position radioulnar
35 degrees supination
70 degrees flexion
close packed position of proximal radioulnar
forearm supinated to 5 degrees
proximal radioulnar capsular pattern of restriction
supination
pronation
what does annular ligament surround
radial head and radial notch of ulna
allows for pronation and supination
cubitus VALGUS
carry angle LOWER than normal
varus = higher
mid radioulnar
fibrous
syndesmosis
amphi
uni
radiocarpal joint type
condyloid, biaxial
flexion, ext
adduct/abd
surfaces of radiocarpal
concave distal end of radius
convex proximal surface of scaphoid, lunate, triquetrum
ligaments w radiocarpal joint
fib capsule
ulnar & radial collateral
palmar and dorsal radiocarpal
what does the TFCC bind together
radius and ulna
separates the distal radioulnar and the ulna from the radiocarpal joint
loose packed radiocarpal
neutral w slight ulnar deviation
closed packed radiocarpal
extension w radial deviation
cap pattern of restriction for radiocarpal
flexion and extension equally limited
radio carpal / intercarpal ROMS
flexion = 80-90
extension = 70-90
RD = 15
UD = 30-45
midcarpal joint type
saddle
biaxial
artic surfaces midcarpal joint
proximal row of carpals
distal row of carpals
ligament for midcarpal joint
transverse carpal lig
movements of midcarpal
ext 20
flex 40
loose packed midcarpal
neutral / slight flexion w ulnar deviation
close packed position midcarpal
extension w ulnar deviation
cap pattern of restriction midcarpal
equal limitation of flex and ext
what 3 transverse joints through the wrist that allow for max stability
- radiocarpal
- midcarpal
- carpometacarpal
intercarpal joint type
plane
uni
intercarpal joint surfacesa
between all carpal bones and between proximal and distal carpals
what are the distal row of carpals
trapezium
trapezoid
capitate
hamate
proximal row of carpals
scaphoid
lunate
triquetrum
pisiform
open packed position intercarpals
neutral or slight flexion
closed packed intercarpals
extension
capsular pattern for intercarpals
none
carpometacarpal joint type 1st digit
saddle
triaxial
carpometacarpal joint type digits 2-5
plane
uniaxial
carpometacarpal 1st digit joint surfaces
convex trapezium w concave base of first metacarpal
carpometacarpal 2-5 digit joint surfaces
distal surfaces of distal row of carpal bones
bases of metacarpals 2-5
what movement does CMC joint 2-5 do
gliding
moevemts of CMC
1st = lots of mvment
2 - min
3- central pillar
4 - 10-15 dorsovolar
5th - 25-30 dorsovolar
ROM CMC of thumb
flex = 45-50
ext = 0
abd = 60-70
add = 30
opposition = thumb tip to head of 5th metacarpal
loose packed CMC thumb
midway between abduction and adduction
midway between flexion and extension
loose packed for CMC fingers 2-5
midway between flexion and extension
closed packed of thumb and digits 2-5 CMC
THUMB = full opposition
fingers = full flexion
caps pattern of restriction CMC thumb
abduction, extension
caps pattern of restriction CMC 2-5
equal limitation in all directions
intermetacarpal joint type
plane
uni
intermetacarpal joint surfaces
adjacent surfaces of bases of metacarpals 2-5
MCP joint type
thumb = condyloid, TRIAXIAL
fingers = condyloid, BIAXIAL
artic surfaces MCP thumb
distal end of 1st metacarpal and proximal phalanx
artic surfaces MCP 2-5
convex distal end of 2-5 metacarpals
concave ends of proximal phalanges
ROM MCP
THUMB = flex = 50-55
fingers = flex = 85-90
ext = 30-45
abduc= 20-30
loose packed MCP
slight flexion
close packed MCP
thumb = full opp
fingers = full flexion
caps pattern of restriction
flexion
extension
interphalangeal joint type
hinge
unii
interphalangeal artic surfaces
heads of most proximal phalanges and bases of most distal phalanges
interphalangeal movements
flexion
extension
which joint has palmar plate
interphalangeal
interphalangeal loose packed & close packed
loose = slight flexion
close = full extension
caps pattern of restriction interphalangeal
flexion
extension
