Podcast
Questions and Answers
What type of joint is the glenohumeral joint?
What type of joint is the glenohumeral joint?
Which nerve supplies sensation to the skin over the back of the shoulder and upper arm?
Which nerve supplies sensation to the skin over the back of the shoulder and upper arm?
Which joint allows for flexion and extension of the forearm?
Which joint allows for flexion and extension of the forearm?
Which articulation is responsible for the rotation of the forearm?
Which articulation is responsible for the rotation of the forearm?
Signup and view all the answers
Which joint allows for the gliding movements between the humerus and ulna?
Which joint allows for the gliding movements between the humerus and ulna?
Signup and view all the answers
What type of joint is the sternoclavicular joint?
What type of joint is the sternoclavicular joint?
Signup and view all the answers
What type of joint is the sternoclavicular joint?
What type of joint is the sternoclavicular joint?
Signup and view all the answers
Which ligament reinforces the sternoclavicular joint anteriorly?
Which ligament reinforces the sternoclavicular joint anteriorly?
Signup and view all the answers
What limits the elevation of the pectoral girdle in the sternoclavicular joint?
What limits the elevation of the pectoral girdle in the sternoclavicular joint?
Signup and view all the answers
Which arteries supply the sternoclavicular joint?
Which arteries supply the sternoclavicular joint?
Signup and view all the answers
Where is the acromioclavicular joint located in relation to the shoulder?
Where is the acromioclavicular joint located in relation to the shoulder?
Signup and view all the answers
Which type of joint is the acromioclavicular joint?
Which type of joint is the acromioclavicular joint?
Signup and view all the answers
Which of the following is true about the subcutaneous olecranon bursa?
Which of the following is true about the subcutaneous olecranon bursa?
Signup and view all the answers
What is the function of the bicipitoradial bursa (biceps bursa)?
What is the function of the bicipitoradial bursa (biceps bursa)?
Signup and view all the answers
What type of joint is the proximal (superior) radio-ulnar joint?
What type of joint is the proximal (superior) radio-ulnar joint?
Signup and view all the answers
What articulates with the radial notch of the ulna in the proximal radio-ulnar joint?
What articulates with the radial notch of the ulna in the proximal radio-ulnar joint?
Signup and view all the answers
What structure holds the radial head in position in the proximal radio-ulnar joint?
What structure holds the radial head in position in the proximal radio-ulnar joint?
Signup and view all the answers
What is the relationship between the articular cavity of the proximal radio-ulnar joint and the elbow joint?
What is the relationship between the articular cavity of the proximal radio-ulnar joint and the elbow joint?
Signup and view all the answers
Study Notes
Subcutaneous Olecranon Bursa
- Located in the subcutaneous connective tissue over the olecranon
Bicipitoradial Bursa
- Separates the biceps tendon from the anterior part of the radial tuberosity
- Reduces abrasion against the radial tuberosity
Proximal Radio-Ulnar Joint
- A pivot type of synovial joint
- Allows movement of the head of the radius on the ulna
- The head of the radius articulates with the radial notch of the ulna
- The radial head is held in position by the annular ligament of the radius
- The joint capsule encloses the joint and is continuous with that of the elbow joint
- The annular ligament attaches to the radial notch of the ulna, forming a collar around the head of the radius
- The articular cavity of the joint is continuous with that of the elbow joint
Joints of the Upper Limb
- Divided into four parts: pectoral region, brachial region, antebrachial region, and hand region
- Each region has different types and functions of joints
Joints in the Pectoral Region
- Sternoclavicular joint
- Acromioclavicular joint
- Glenohumeral joint
Sternoclavicular Joint
- A saddle type of synovial joint but functions as a ball-and-socket joint
- Divided into two compartments by an articular disc
- The articular disc serves as a shock absorber of forces transmitted along the clavicle from the upper limb
- Dislocation of the clavicle is rare, whereas fracture of the clavicle is common
- The sternal end of the clavicle articulates with the manubrium and the 1st costal cartilage
- The articular surfaces are covered with fibrocartilage
- The joint capsule surrounds the SC joint, including the epiphysis at the sternal end of the clavicle
- The joint capsule is attached to the margins of the articular surfaces, including the periphery of the articular disc
- A synovial membrane lines the internal surface of the fibrous layer of the joint capsule, extending to the edges of the articular surfaces
- The strength of the SC joint depends on its ligaments and articular disc
- Anterior and posterior sternoclavicular ligaments reinforce the joint capsule anteriorly and posteriorly
- The interclavicular ligament strengthens the capsule superiorly
- The costoclavicular ligament anchors the inferior surface of the sternal end of the clavicle to the 1st rib and its costal cartilage, limiting elevation of the pectoral girdle
- The SC joint is supplied by the internal thoracic and suprascapular arteries
- The SC joint is supplied by branches of the medial supraclavicular nerve and the nerve to the subclavius
Acromioclavicular Joint
- A plane type of synovial joint
- Located 2–3 cm from the “point” of the shoulder formed by the lateral part of the acromion
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the different types and functions of joints in the upper limb, including the sternoclavicular joint, elbow joint, wrist joint, and more. Explore the anatomy of the pectoral, brachial, antebrachial, and hand regions.
