Scapula and Shoulder Flashcards
joint classification
fibrous
cartilaginous - primary and secondary
fibrous joint
joint made of fibrous tissue 0 collagen
examples of fibrous joint
Sutures between skull bones
Inferior tibiofibular joint syndesmosis
structure and example of primary cartilaginous joint
Bone – Hyaline Cartilage – Bone
Very strong
e.g., 1st Costosternal joint, growth plate between two ossifying ends of a bone
structure and example of secondary cartilaginous joint
Bone – Hyaline Cartilage – Fibrocartilagenous Disk –Hyaline Cartilage – Bone
Articular surfaces of bone are covered in hyaline cartilage & united by fibrocartilage
e.g., Pubic Symphysis, vertebral bodies
main features of synovial joints
Hyaline Articular Cartilage Capsule Joint Cavity Synovial Membrane Ligaments Movement
pectoral girdle
Clavicle & Scapula
if the clavicle breaks where would there be a pull
pull of sternocleidomastoid
pull of pectoralis major
list shoulder joints
superior glenohumeral ligament middle glenohumeral ligament tendon of long head of biceps brachii inferior glenohumeral ligament redundant capsule superior acromial clavicular join acromial. clavicular joint coraco-acromial ligament coracoclavicular ligament - trapezoid ligament, conoid ligament
what muscle attaches to the superior facet of the humerus
supraspinatus
what muscle attaches to the middle facet of the humerus
infraspinatus
what muscle attaches to the inferior facet of the humerus
teres minor
nerve supply of supraspinatus
suprascapular nerve
nerve supply of infraspinatus
suprascapular nerve
nerve supply of teres minor
axillary nerve
nerve supply of subscapularis
subscapular nerves
where is the most common form of shoulder dislocation
DISCLOCATION Anterior –Inferiormost common
possible nerve damage of shoulder dislocation
Muscular/cutaneous
bursae
fluid filled pouches
function of bursae
Reduce friction between bone and soft tissue
location of bursae
Occur between bone and tendons or bone and skin
movements of scapula
elevation depression protraction retraction flexion extension abduction adduction medial and lateral rotation
muscles involved in protraction
pectoralis minor
serratus anterior
muscles involved in retraction
rhomboids
middle trapezius
latissimus dorsi
superficial muscles of shoulder
Deltoid
trapezius
Serratus anterior
front muscles involved in flexion of shoulder
Pectoralis major (clavicular part)
Deltoid
(anterior part)
muscles involved in extension of shoulder
Latissimus dorsi
Deltoid (posterior fibres)
Teres major, Triceps
muscles involved in abduction of shoulder
Supraspinatus(0-15°)
Deltoid(15-90°)
*(Trapezius & serratus anterior: scapular rotation)
muscles involved in adduction of shoulder
Pectoralis major (sternal part) Latissimus dorsi Also teres major
muscles involved in medial rotations
Subscapularis
Teres major
Pectoralis major
muscles involved in lateral rotations
Infraspinatus
Teres minor
Posterior deltoid
