What are the 2 joints of the should girdle?
- articulatio sternoclavicularis
- articulatio acromioclavicularis
- articulatio glenohumerale
What type of joint is the articulatio sternoclavicularis?
What are the articular facets? (2)
And which ligaments are attached to it? (4)
Articulatio sternoclavicularis
- ball & socket joint
- articular facets:
- extremitas sternalis claviculae
- manubrium sternii
- ligaments:
- ligg. sternoclavicularis ant. + post.
- ligg. interclaviculares
- lig. costoclaviculare
What is the special feature of the articulatio sternoclavicularis?
articular disk
What type of joint is the articulatio acromioclavicularis?
What are the articular facets? (2)
And which ligaments are attached to it? (3)
Articulatio acromioclavicularis
- limited ball & socket joint
- articular facets:
- extremitas sternalis claviculae
- acromion scapulae
- ligaments:
- lig. acromioclaviculare
- lig. coracoclaviculare
- lig. conoideum
- lig. trapezoideum
- lig. coracoacromiale
What is the special feature of the articulatio acromioclavicularis?
incomplete articular disk
How do the axes of movement run and what are the possible movements of the shoulder girdle? (2)
- retraction / protraction (vertical axis)
- elevation / depression (saggital axis)
Which muscles act upon the shoulder girdle during protraction? (4)
- m. serratus anterior
- m. pectoralis major
- m. pectoralis minor
- m. trapezius pars descendens.
Which muscles act upon the shoulder girdle during retraction? (5)
- m. trapezius pars transversa
- mm. rhomboidei (2)
- m. latissimus dorsi
- m. sternocleidomastoideus pars clav.
Which muscles act upon the shoulder girdle during elevation? (5)
- m. levator scapulae
- m. trapezius pars descendens,
- mm. rhomboidei (2)
- m.sternocleidomastoideus pars clavicularis
Which muscles act upon the shoulder girdle during depression? (6)
- m trapezius pars ascendens
- m. pectoralis minor
- m. pectoralis major pars abdominalis
- m. serratus anterior pars inferior
- m. latissimus dorsi
- m. subclavius.
What type of joint is the articulatio glenohumerale?
What are the articular facets? (2)
And which ligaments are attached to it? (4)
Articulatio glenohumerale
- ball & socket
- articular facets:
- caput humeri
- cavitas glenoidalis
- ligaments:
- lig. coracohumerale
- lig. glenohumerale
- lig. humerale transversum
- lig. coracoacromiale
How do the axes of movement run and what are the possible movements of the articulatio glenohumerale? (4)
- anteversion / retroversion (transverse axis)
- abduction / adduction (saggital axis)
- lateral / medial rotation (vertical axis)
- circumduction
Which muscles act upon the shoulder joint during adduction? (9)
- m. pectoralis major
- m. teres major
- m. latissimus dorsi
- m. triceps brachii caput longum
- m. biceps brachii caput breve
- m. infraspinatus
- m. teres minor
- m. subscapularis
- m. coracabrachialis
Which muscles act upon the shoulder joint during abduction? Differentiate. (3, 2)
- 90°
- m. deltoideus pars acromialis
- m. supraspinatus
- m. biceps brachii caput longum
160 - 180°
- m. serratus anterior
- m. trapezius pars descendens
Which muscles act upon the shoulder joint during anteversion? (4)
- m. deltoideus pars clavicularis
- m. biceps brachii
- m. pectoralis major pars clavicularis
- m. coracobrachialis
Which muscles act upon the shoulder joint during retroversion? (3)
- m. deltoideus pars posterior
- m. teres major
- m. latissimus dorsi
Which muscles act upon the shoulder joint during lateral rotation? (3)
- m. infraspinatus
- m. teres minor
- m. deltoideus pars posterior
Which muscles act upon the shoulder joint during medial rotation? (6)
- m. subscapularis
- m. pectoralis major
- m. biceps brachii
- m. teres major
- m. latissimus dorsi
- m. deltoideus pars clavicularis
What are the 2 bursae of the articulatio glenohumerale and where are they located?
bursa subscapularis
btw m. subscapularis, collum scapulae
bursa subacromialis
btw acromion, lig. coracoacromiale, m. deltoideus
Where does the joint capsule of the articulatio glenohumerale attach?
Where are its 2 apertures?
What else does it contain and what for?
- attachments of the capsule
- collum scapulae, collum chirurgicum humeri
- apertures
- for caput longum bicipitis brachii
- anterior opening that communicates with bursa subscapularis
- recessus axillaris → allow elevation without stretching the joint capsule
The articulatio cubiti is a compound joint made up by..?
- articulatio humeroulnaris
- articulatio humeroradialis
What type of joint is the articulatio cubiti?
What are the articular facets? (2, 2)
And which ligaments are attached to it? (3)
Articulatio cubiti
- hinge joint
articulatio humeroradialis = ball & socket, but restricted
- articular facets:
- articulatio humeroradialis
- capitulum
- fovea articularis capitis radii
- articulatio humeroulnaris
- trochlea humeri
- incisure trochlearis ulnae
- articulatio humeroradialis
- ligaments:
- lig. collaterale radiale
- lig. collaterale ulnare
- lig. anulare radii
How do the axes of movement run and what are the possible movements of the articulatio cubiti? (1)
- flexion / extension (transverse axis)
Which muscles act upon the elbow joint during flexion? (8)
- m. biceps brachii
- m. brachialis
- m. brachioradialis
- m. pronator teres
- m. flexor carpi radialis
- m. palmaris longus
- m. extensor carpi radialis longus
- m. extensor carpi radialis brevis
