Upper Extremity Flashcards
TRUE JOINTS
AC
SC
GH jt
FALSE JOINTS
Subacromial jt
Bicipital groove
Scapulothoracic jt
Orientation of clavicle
Lateral 1/3 - concave anteriorly
Medial 2/3 - convex anteriorly
FRAGMENTS OF CLAVICLE
Medial fragment?
Lateral fragment?
Pulled superiorly by SCM
Pulled inferiorly by gravity
Pulled medially by PECS MAJOR
Content of brachial plexus
Subclavian artery
Brachial plexus
Orientation of acromion
Mnemonics?
Acromion PLS
Posterior
Lateral
Superior
TYPES OF ACROMION PROCESS
MC?
Rare?
Assoc c impingement?
I - Flat
II - Curved
III - Hooked
IV - Upturned
Curved
Upturned
Hooked
Orientation of coracoid process
Anterior, superior
Ligament that prevents the superior translation of humerus
Coracoacromial ligament
GREATEST TUBEROSITY OF HUMERUS Location? Palpation? Mm attachment? Best viewed in?
Lateral
IR
SIT
ER
LESSER TUBEROSITY OF HUMERUS
Location?
Palpation?
Mm attachment?
Medial
ER
Subscap
What sign when there is posterior deltoid weakness
-Hyperextend both UE, results in asymmetrical in both UE
SWALLOW TAIL SIGN
SC JOINT
Type?
Articulation?
DOF/axes?
Saddle/sellar/double plane joint
Medial end of clavicle + manubrium
3 DOF / 3 axes
Ligament that limits excessive depression of distal clavicle
Interclavicular (IC) ligament
Ligament that limits excessive elevation of distal clavicle
Costoclavicular (CC) ligament
SC LIGAMENT
Limits protraction?
Limits retraction?
Posterior SC
Anterior SC
SC DISC
Code??
EDi Sa PRC
During elevation, depression, disc becomes part of sternum
During protraction, retraction, disc becomes part of clavicle
Concave-Convex Rule
Elevation depression?
Protraction retraction?
Opposite
Same
What are the contributions of the SC joint during elevation:
<90 degrees of arm elevation?
More than 90 degrees of arm elevation?
Elevation
Depression
If there is no posterior rotation of the clavicle, arm elevation is up to how many degrees?
110
AC JOINT
Type?
Articulation?
DOF/axes?
Synovial plane joint
Acromion + lateral end of clavicle
3 DOF
Primary ligament for inferior translation?
SUPERIOR AC LIGAMENT
Primary ligament for superior translation?
CORACOCLAVICULAR LIGAMENT - CONOID
2 types of CORACOCLAVICULAR LIGAMENT
Conoid
Trapezoid
CC - CONOID Shape? Anterior/Posterior? Medial/Lateral? Orientation of fibers?
Triangular
Posterior
Medial
Vertical fibers
CC - TRAPEZOID Shape? Anterior/Posterior? Medial/Lateral? Orientation of fibers?
Quadrangular
Anterior
Lateral
Horizontal fibers
What ligament that prevents medial displacement of scapula?
CC - TRAPEZOID LIGAMENT
What ligament that protects the subclavian artery & brachial plexus?
IC LIGAMENT
KINEMATICS OF AC
For horizontal curvature?
For vertical curvature?
ER & IR (protracts, retract)
Anterior & posterior tilting (shrug)
What are the contributions of the AC joint during arm elevation?
Upward elevation & posterior tilting
Type of joint in GH joint?
Ball & socket
Spheroidal jt
Universal jt
ORIENTATION OF ARTICULATION IN GH JOINT
Mnemonics?
Humeral head?
Glenoid fossa?
MPS SAL
MPS
SAL
NORMAL ANGLES FOR THE HUMERAL HEAD
Angle of inclination?
Angle of torsion?
130-150 degrees
Approx 30 degrees of retrotorsion
What ligament that prevents downward translation of humerus?
CORACOHUMERAL LIGAMENT
What ligament that is greatly involved in AdCap?
CORACOHUMERAL LIGAMENT
What ligament that is greatly involved in DM & PD?
CORACOHUMERAL LIGAMENT
What ligament that is accompany of supraspinatus that prevents inferior trans of humerus?
CORACOHUMERAL LIGAMENT
ACTIONS & DEGREESTHAT GH LIGAMENT LIMIT
Superior?
Middle?
Inferior?
0-45 degrees - ER, inf
45-90 degrees - ER, primary
More than 90 degrees - ER, IR, inf
FORAMEN IN GH JOINT
Bet. sup & middle lig?
Bet. middle & inf lig?
FORAMEN OF WEITBRECHT
FORAMEN OF ROUVIER
INFERIOR GH LIGAMENT PARTS & THEIR LIMITS ACTION
Anterior band - ER
Posterior band - IR
Axillary pouch - inf translation
Bicipital groove aka?
Intertubercular groove
BOUNDARIES OF BICIPITAL GROOVE
Mnemonics??
Roof?
Pec-Lat
Me-Ter
Lady between the 2 majors
Pectoralis major - lateral
Teres major - medial
Lats Dorsi - floor
THL - roof
Actions of Teres major & Lats dorsi
EXADIR
Subacromial joint aka?
Suprahumeral jt
Supraspinatus outlet
ACROHUMERAL INTERVAL
Arms at side?
Elevated?
10mm
5mm
Recite the SCAPULOHUMERAL RHYTHM table
…
Action line of Deltoids
Large positive translatory
Small rotatory force
Action line of ITS
Negative translatory force
Action line of Supraspinatus
Small positive translator force of the supraspinatus is immediately counteracted by the negative translator force of gravity
Recite/write the BRACHIAL PLEXUS
Mnemonics?
RoTunDaCuBao Roots Trunk Division Cord Branches (MARMU)
How many branches in BP?
16 branches
Largest branch in BP?
RADIAL NERVE
NERVE ROOTS IN BRANCHES OF BRACHIAL PLEXUS
Mnemonics?
Musculocutaneous? Axillary? Radial nerve? Median nerve? Ulnar nerve?
3 Muskeeters - C5 C6 C7 2 Assasination - C5 C6 5 Rats - C5-T1 5 Mice - C5-T1 2 Unicorns - C8 T1
WALLS OF AXILLA
Mnemonics??
Anterior?
Posterior?
Lateral?
Medial?
ANTERIOR (SUBPECPEC)
Subclavius
Pecs major
Pecs minor
POSTERIOR (SULATEMA)
Subscapularis
Lats Dorsi
Teres Major
LATERAL (BIBICO)
Biceps tendon in bicipital groove - LH of Biceps
Coracobrachialis
MEDIAL
SA
Ribs 2-6
Where does Brachial Plexus comes from?
Anterior rami C5-T1
BOUNDARIES OF TRIANGULAR SPACE IN SHOULDER
Superior - teres minor
Inferior - teres major
Lateral - LH of triceps
BOUNDARIES OF QUADRANGULAR SPACE IN SHOULDER
Superior - teres minor
Inferior - teres major
Lateral - humerus
Medial - LH of triceps
STRUCTURES THAT PASSES THROUGH THE SPACES OF:
Quadrangular?
Triangular?
Posterior circumflex humeral artery
Axillary nerve
Circumflex scapular artery
LTN aka?
Nerve of Bell
Axillary nerve aka?
Circumflex nerve
Radial nerve aka?
Musculospiral nerve
Thoracodorsal nerve aka?
Middle subscapular nerve
Musculocutaneous nerve aka?
Lateral cutaneous nerve
HUMERORADIAL JT Type of jt? Articulation? Ligaments? Kinematics? CC rule?
Modified hinge joint (ginglymus jt) Capitulum & radial fovea LCL - Lateral radial (primary), lateral ulnar 1 degree Same
HUMEROULNAR JT Type of jt? Articulation? Ligaments? Kinematics? CC rule?
Modified hinge joint (ginglymus jt) Trochlea & trochlear notch MCL - Anterir (primary), transverse, posterior 1 degree Same
CUBITAL FOSSA
Mnemonics??
Be Right There Always My PT (Lat to Medial) Brachioradialis Radial nerve Tendon of biceps brachial Artery Median nerve Pronator Teres
Why is there a CARRYING ANGLE?
Bc of the medial portion of trochlea which extends more distally forcing the ulna to deviate laterally
Importance of ulna?
Importance of radius?
Elbow
Wrist
NORMAL VALUES CARRYING ANGLE Male? Female? Cubitus varus? Cubitus valgus? Gunstock deformity?
5-10 10-15 <5 More than 15 -15
CARRYING ANGLE
Present during?
Absent during?
Elbow EXT
FA supination
Elbow flexion beyond 30 degrees
FA pronation
SPURT MUSCLE Aka? Origin? Insertion? Effect? Muscle fiber orientation? Ex?
Mobility muscle Far from the jt Near the jt Rotatory effect Perpendicular
Biceps
Brachialis
SHUNT MUSCLE Aka? Origin? Insertion? Effect? Muscle fiber orientation? Ex?
Stability muscle Near the jt Far from the jt Translatory/compress effect Parallel
Brachioradialis
PRIMARY ELBOW FLEXORS Chief elbow flexor? Strongest elbow flexor? Unaffected FA position? Affected by sh & FA position? Affected by FA position?
…
What mm that is:
Unaffected by FA position
Affected by shoulder position
TRICEPS BRACHII
TRICEPS BRACHII
Prone to insufficiency?
Strongest head?
Active during resisted/unresisted motion?
Long head
Lateral head
Medial/Short head
What glide happens in prox radius during:
Pronation?
Supination?
Posterior glide
Anterior glide