PHYSICAL EDUCATION

1. ELBOW
JOINT
Lesson 8

2. BONES OF THE
ELBOW AND
FOREARM

3. ELBOW
- The humerus, the
ulna and the radius
meet to form a
structure.
FOREARM
- The ulna and radius
form.

4. The distal end of the humerus provides the bony attachments
for the soft tissues that span the upper arm and the forearm to
form the elbow joint. At the distal end of the humerus, the
shaft widens out to form two bony prominences: the lateral
and medial epicondyles.

5. The parts of the
humerus between the
shaft and these
epicondyles, where the
bone actually widens,
are known as the lateral
and medial
supracondylar ridges.

6. Three Fossa (depression)
1. Coronoid Fossa
On the interior surface, between the
two epicondyles. Where the coronoid
process of the ulna is positioned during
elbow flexion.
2. Radial Fossa
Lateral to the coronoid fossa
• Capitulum
The head of the radius moves into this
fossa during elbow flexion. Just distal to the
lateral epicondyle is a smooth, round
surface. This surface is where the head of
the radius rotates during forearm
movement.

7. At the very distal end
of the humerus is a
spool-like structure
known as the trochlea.
This is the structure on
which the olecranon
process of the ulna
attaches.

8. 3. Olecranon Fossa – which is formed between the two
epicondyles, appears. This is the depression into which
the olecranon process of the ulna moves when the
elbow joint is moved into extension.

9. Under normal conditions, when the elbow
joint is in full extension, you should be
able to observe that the lateral epicondyle,
the olecranon process and the medial
epicondyle form a straight line. If the
normal elbow joint is flexed to 90°, these
three structures should form an isosceles
triangle with the olecranon process distal
to the epicondyles .

13. LIGAMENTS AND JOINTS OF
THE ELBOW AND FOREARM

15. WHAT IS LIGAMENT?
It is a tough piece of tissue
that holds bones
An Injury to a ligament is
called a SPRAIN
An injury to a tendon or
muscle is a STRAIN

16. Joints – the place where
two bones come together

17. 3 JOINTS IN THE ANATOMICAL AREA
Ulnohumeral
joint
-between
the humerus
and the ulna

18. Radiohumeral
joint
- between radius
and humerus

19. Proximal
Radioulnar Joint
- joint between
Radius and Ulna

20. CAPSULAR LIGAMENT

21. ANTERIOR PART OF CAPSULAR
LIGAMENT
Extends from the anterior surface of the
humerus just proximal to the coronoid fossa
to the anterior surface of the coronoid
process and the anular ligament.

24. POSTERIOR
The capsular ligament attaches to the
tendon of insertion of the triceps branchii
muscle, edge of the olecranon, lateral
epicondyle, and posterior surface of the
humerus in the area of the trohclea and the
capitulum.

26. ANTERIOR PORTION OF THE CAPSULAR
LIGAMENT
Radial collateral ligament
- runs between the inferior border of the
lateral epicondyle of the humerus to the
annular ligament and radial notch of the
ulna
Ulnar collateral ligament

28. ULNAR COLLATERAL LIGAMENT

29. INTEROSSEOUS MEMBRANE
Is a broad and thin plane of fibrous tissue
that separates many of the bone of the body.
It is an important component of many joints

30. INTEROSSEOUS
MEMBRANE
Is a broad and thin
plane of fibrous tissue
that separates many of
the bone of the body. It
is an important
component of many
joints

31. VOLAR RADIOULNAR

32. DORSAL RADIOULNAR

33. WHAT
MOTIONS
OCCUR AT
THE ELBOW?

34. + =
+

36. PRONATION & SUPINATION
Supinator Pronator Quadratus Pronator Teres

38. ELBOW
TRAUMA

39. Sprai
ns

40. Strains

41. Dislocation

42. Fracture

43. FUNDAMENTAL MOVEMENTS /
ANTERIOR MUSCLE OF THE
ELBOWS

44. • The elbow joint is a
uniaxial joint capable of
FLEXION and EXTENSION
in the sagittal plane
about a frontal horizontal
axis.
Muscles involve:
* brachialis
* brachioradialis
*biceps brachii
*triceps brachii
*anconeus

45. Muscles involve for the
supination and pronation of
the fore arm:
• Biceps brachii
• Supinator
• Pronator quadratus
• Pronator teres
PRONATOR
QUADTRATOS
SUPINATOR PRONATOR
TERES

46. ANTERIOR MUSCLES OF THE ELBOW
BRACHIALIS MUSCLE

48. BICEPS BRACHII

49. POSTERIOR MUSCLES OF
THE ELBOW

50. TRICEPS BRACHII
Often associated with
elbow joint extension.
Contraction of the
triceps brachii extends
the elbow joint.

52. ANCONEUS
Action: extension
forearm at elbow
joint
Origin: lateral
epicondyle of the
humerus
Insertion: olecranon
process of the ulna

54. MUSCLES OF THE
FOREARM

55. PRONATOR TERES
Action: responsible
for pronation of the
forearm
Origin: coronoid
process of the ulna
Insertion: lateral
surface of the radius

56. PRONATOR QUADRATUS
Origin: Radius
Insertion: inserts
on the ulna just
proximal to the
wrist

57. SUPINATOR
Action: forearm
supination
Origin: ulna
Insertion: inserts on the
radius at the proximal
ends of the bones on
the posterior aspect

58. BICEPS BRACHII
Contraction of
the biceps brachii
causes the radius
to rotate
externally
(laterally),
causing the
forearm to
supinate.

60. THANK YOU!