Joints of upper limb: shoulder & elbow- Exam IV Flashcards
What are the 2 types of joints in the body?
solid & synovial
What are the mobile and moveable joints of the body?
synovial joints
What are the 2 categories of solid joints?
fibrous and cartilage
What are the 3 types of solid fibrous joints?
- sutures
- syndesmoses
- gomphoses
Joint between the root of tooth, periodontal ligament & alveolar bone of mandible- what is the name of this joint and what type of joint is it?
gomphoses; solid fibrous joint
Describe the makeup of synovial joints:
fibrous & cartilagenous
Synovial joints contain a joint capsule with:
- inner synovial membrane
- outer fibrous capsule
Some synovial joints have ___ that cover the articular ends of the bones
hyaline cartilage
2 examples of synovial joints that contain an articular disc:
- knees
- temporomandibular joint
Due to the mobility of synovial joints, what is present to mitigate friction?
synovial fluid
Where 2 long bones articulate we have a covering of:
articular cartilage (hyaline cartilage)
The articular capsule is made of:
fibrous capsule & synovial membrane
What is found inside the synovial membrane?
synovial fluid
What is responsible for reinforcing most joints of the body?
tendons & ligaments
Ligaments connect:
Tendons connect:
ligaments- bone to bone
tendons- muscle to bone
What are the 3 functional classifications of joints?
- Synarthrosis
- Amphiarthrosis
- Diarthrosis
Joints with NO movement:
synarthrosis
Joints with little movement:
amphiarthrosis
Joints with a lot of movement:
diarthrosis
What type of joints are most synovial joints classified as functionally?
diarthrosis
List the possible movements of synovial joints:
nonaxial, uniaxial, biaxial, and multiaxial
Synovial joints only able to slide/glide along eachother with no specific axes of movement:
nonaxial
What joints are typically characterized by an irregular flattened articular surface?
nonaxial synovial joints
Synovial joint described as a hinge with a single axis of movement:
uniaxial
The articulation between the ulna & humerus forms what type of joint?
uniaxial elbow joint
Joint with 2 axes of movement; describe that movement:
Biaxial; flex/extend and abduct/adduct
Synovial joint with greater than 2 axes of movement:
multiaxial
The acromioclavicular joint involves the articulation between:
The structural type of this joint is:
The functional type of this joint is (movements allowed):
acromion process of scapula and clavicle
Synovial/plane
Diarthrotic- gliding and rotation of scapular on clavicle
The glenohumeral joint is known as:
Shoulder joint
The glenohumeral joint involves articulation between:
The structural type of this joint is:
The functional type of this joint is (movements allowed):
Scapular and humerus
Synovial- ball & socket
Diarthrotic- multiaxial- flexion, extension, abduction, adduction, circumductino, rotation of humerus/arm
The elbow joint involves articulation between:
The structural type of this joint is:
The functional type of this joint is (movements allowed):
Ulna (and radius) with humerus
Synovial- hinge
Diarthrotic- uniaxial, flexion, extension of forearm
The proximal radioulnar joint involves articulation between:
The structural type of joint is:
The functional type of joint is (movements allowed):
Radius and ulna
Synovial- pivot
Diarthrotic- uniaxial, rotation of radius around long axis of the forearm to allow pronation and supination
The distal radioulnar joint involves the articulation between:
Structural type of joint:
The functional type of joint is (movements allowed):
Radius and ulna
Synovial-pivot (contains articular disc)
Diarthrotic- uniaxial- rotation (convex head of ulna rotates in ulnar notch of radius)
The sternoclavicular joint involves the articulation between:
Structural type of joint:
Functional type of joint (movements allowed):
manubrium of sternum and clavicle
Synovial- shallow saddle with articular disc
Diarthrotic-multiaxial
What is the only bony articulation of the upperlimb with the thorax?
Sternoclavicular joint
What do the radioulnar (proximal and distal) joints accomplish?
pronation and supination of the forearm
What is the only bone to articulate with the wrist?
radius
The upper limb is built for _____ , while the lower limb is built for _____.
mobility; locomotion
Responsible for hanging the shoulder and upper limb off the body (reinforced by ligaments and musculature)
clavicle
The pectoral girdle is the:
shoulder girdle
The pectoral girdles is made of:
scapula and clavicle only
What is not part of the pectoral girdle but articulates with it:
humerus
The clavicle + scapula+ humerus make up the:
shoulder complex
What are the 2 joints of the upper limb?
sternoclavicular joint & acromioclavicular joint
The acromioclavicular end of the clavicle is the ____ end of the clavicle
lateral
What is responsible for reinforing clavicle and acromion attachment:
acromioclavicular ligament
What attaches one part of the scapular to another part of the scapula forming a roof over the glenoid region?
coricoacromial lgament
What reinforce and keep the clavicle from popping up off its articulation with the scapula?
coricoclavicular ligaments
The subacrombial space is roofed over by:
coricoacromial ligament
The glenohumeral joint involves articulation between:
head of humerus with glenoid of scapula
What is the glenoid of the scapula?
articulating surface of the scapula
The scapula sits in a bunch of:
muscle and fascia
The scapula articulates with _____; and then the ____ articulates with the sternum:
clavicle; clavicle
What type of joint is the sternoclavicular joint?
synovial joint
The sternoclavicular joint is described as:
double/shallow saddle
Describe the synovial cavity of the sternoclavicular joint:
2 separate synovial cavities
What ligament connects the clavicle to the 1st rib?
costoclavicular ligament
What ligament goes in between the 2 heads of the clavicles?
interclavicular ligament
Ligament going from the clavicle to the manubrium of the sternum:
anterior and posterior sternoclavicular ligametns
What is only “true” bony articulation between the upper limb and the thorax?
sternoclavicular joint
Because the sternoclavicular joint is a multiaxial joint. what movements does it produce?
- elevation and depression of clavicle and disc
- Protraction and retraction of clavicle and sternum
- rotation of both clavicle and sternum
The dislocation of the sternoclavicular joint is typically caused by:
traumatic event with a lot of force
Describe the prevalence of a sternoclavicular joint dislocation:
Rare