Forearm, Elbow, Distal Humerus
Name the parts of the proximal humerus (7).
humeral head greater tubercle (lateral) lesser tubercle (anterior) bicipital or intertubeurcler groove anatomical neck surgical neck deltoid tuberosity (anterolateral)
What is between the greater and lesser tubercles?
intertubercular groove or bicipital groove.
Where is the lesser tubercle located in anatomical position?
on the anterior side of the humerus
Where is the greater tubercle located in anatomical position?
on the lateral side of the humerus
What is the site of most humeral fractures?
surgical neck
What is at the center of the trochlea?
A groove called the trochlea sulcus is in the center of the trochlea.
Where is the anatomical neck of the humerus located from the head?
Anatomical neck is below and lateral to the head.
What is the name of the two anterior depressions/fossa on the distal humerus? What articulates into them?
Coronoid fossa, medially and the coronoid process articulates into it. radial fossa, laterally and the radial head articulates into it.
Where are the heads of the radius and ulna located anatomically?
Head of the radius is proximal and in anatomical position is located laterally (thumb side). Head of the ulna is located distal and in anatomical position is located medially (pinky side)
What is the name of the posterior depression/fossa on the distal humerus? What articulates into it?
Olecranon Fossa. The olecranon process articulates into it.
Name the 2 joints where they radius and ulna articulate with each other and describe how they are formed.
Proximal radioulnar joint: formed by the head of the radius and the radial notch of the ulna. Distal radioulnar joint: formed by the head of the ulna and the ulnar notch of the radius.
Name the parts of the Ulna, starting most proximal.
Proximal: olecranon process, trochlear or semilunar notch, coronoid process, radial notch, coronoid tubercle Medial: Ulnar Shaft Distal: Ulnar head and styloid process of the ulna
Name the parts of the Radius, starting most proximal
Proximal: radial head, radial neck, radial tuberosity, Medial:radial shaft Distal: ulnar notch and styloid process of the radius
Where on the ulna is the radial notch located?
Radial notch is on the proximal, lateral side of the ulna.
Where are the styloid processes of the radius and ulna located anatomically.
Radius in anatomical position, styloid process is distal and laterally located (thumb side) Ulna in anatomical position, styloid process is distal and medially located (pinky side)
What bones is the forearm made of and what are their anatomical locations?
Radius is lateral Ulna is medial
What articulates with the head of the radius and what side is it on?
The capitulum articulates with the head of the radius and is lateral in anatomical position. Hint: cap sits on the head.
What is the medial portion of the coronoid process called?
The coronoid tubercle.
What is the expanded end of the distal humerus called?
The humeral condyle.
What are two beaklike processes of the ulna?
The olecranon process (larger) and the coronoid process (smaller).
Which out of the radius and ulna is the bone in the forearm that is involved in the wrist joint? What other bones are in the wrist joint?
The radius. Wrist joint is the radius, scaphoid carple and lunate carple.
What is the part of the distal humerus that articulates with the ulna and what "side" is it on?
The trochlea articulates with the ulna and it is located medially in anatomical position.
That is the large concave depression of the ulna that articulates with the distal humerus?
The trochlear or semilunar notch.
Which out of the radius and ulna is the bone in the forearm that is involved in the elbow joint? What other bones are in the elbo joint?
The ulna. The elbow joint is the ulna and the distal humerus.
Name the parts of the distal humerus (8).
coronoid fossa (medial) radial fossa (lateral) medial epicondyle lateral epicondyle Capitulum (lateral) Trochlea (medial) Trochlear Sulcus Olecranan fossa
