the elbow joint

1. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-1
The elbow joint, radius and ulne and
there movements.
By: Amna
Qurat-ul-ain
Maham
Fatima
Hina
Sundus
ANATOMY

2. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-2
Elbow joint
 Type of elbow joint is hing
joint.
 Three bones are involved in
forming elbow joint;
 Humerus
 Radius
 Ulna
 It is uniaxial joint.
 Only flexion/extension is
possible.

3. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-3
Radius
 It is lateral bone of forearm
 Its proximal end articulate with
humerus at elbow joint and with
ulna at proximal radioulnar joint.
 Its distal end articulate with
scaphoid and lunate bones of
hand at wrist joint and with ulna
at distal radioulnar joint.

4. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-4
Shaft of radius
 The shaft of the radius is narrow proximally, where
it is continuous with the radial tuberosity and neck,
and much broader distally, where it expands to form
the distal end
 Throughout most of its length, the shaft of the
radius is triangular in cross-section, with:
 three borders (anterior, posterior, and interosseous)
 Three surfaces (anterior, posterior, and lateral)

5. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-5
Borders of radius
 The anterior border begins on the medial
side of the bone as a continuation of the
radial tuberosity. In the superior third of the
bone, it crosses the shaft diagonally, from
medial to lateral, as the oblique line of the
radius. The posterior border is distinct only
in the middle third of the bone. The
interosseous border is sharp and is the
attachment site for the interosseous
membrane, which links the radius to the ulna

6. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-6
Surfaces of radius
The anterior surface is lie in between
interosseous and anterior border.
The posterior surface lies between posterior
and interosseous border.
The lateral surface lies between anterior and
posterior border.

7. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-7
Ulna
 The ulna is the medial bone of
forearm.
 Its proximal end articulates
with humerus at elbow joint
and with head of radius at
proximal radioulnar joint.
 Its distal end articulate with
humerus at distal radioulnar
joint.
 It excluded from wrist joint by
articular disk.

8. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-8
Shaft of ulna
 The shaft of the ulna is broad superiorly
where it is continuous with the large proximal
end and narrow distally to form a small distal
head. Like the radius, the shaft of the ulna is
triangular in cross-section and has:
 three borders (anterior, posterior, and
interosseous)
 three surfaces (anterior, posterior, and
medial).

9. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-9
Borders of ulna
The anterior border is smooth and
rounded. The posterior border is sharp
and palpable along its entire length. The
interosseous border is also sharp and
is the attachment site for the
interosseous membrane, which joins the
ulna to the radius.

10. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-10
Surfaces of ulna
The anterior surface lies between the
anterior and interosseous border.
The medial border lies between anterior
and posterior border.
The posterior surface lies between anterior
and posterior border.

11. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-11
Muscles of radius

12. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-12
Muscles of ulna

13. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-13
Movement
 Only supination and pronation
occur on forearm.
 Radioulnar pronators
Pronator teres
Pronator quadratus
Brachioradialis
 Radioulnar supinators
Biceps brachii
Supinator muscle
Brachioradialis

14. Manual of
Structural Kinesiology The Elbow and Radioulnar Joints 6-14