The posterior elbow examination is to check the restriction of the internal and external iliac crest and the ulna olecranon at 3 o'clock. It is used to diagnose and identify the dislocation of the elbow joint and the supracondylar fracture of the humerus. The patient takes a seat or stands, the palm rests on the top of the head, and then actively stretches the elbow to check the relative position of the upper jaw of the humerus, the upper iliac crest and the olecranon. When the normal elbow joint is at a right angle to the elbow, the inner and outer humerus and the ulnar olecranon tip are three points into a distal isosceles triangle. When the elbow is straight, the three points are in line.

Basic Information

Specialist classification: growth and development check classification: physical examination

Applicable gender: whether men and women apply fasting: not fasting

Tips: The technique is gentle, avoiding muscle tension and affecting the results of the examination. Normal value

When the normal elbow joint is at a right angle to the elbow, the inner and outer humerus and the ulnar olecranon tip are three points into a distal isosceles triangle. When the elbow is straight, the three points are in line.

Clinical significance

Abnormal results:

When the elbow flexion is at a right angle, the inside and outside of the humerus and the olecranon at 3 points form an isosceles triangle, called the elbow posterior triangle. The tip of the triangle points to the far end. When the elbow joint is upright, the above three points are in a straight line. When the elbow joint was dislocated or the humerus was fractured inside and outside, the isosceles relationship of the three changes. However, fractures in other parts of the tibia do not affect their triangular and linear relationship. Clinically, it is often used to identify posterior dislocation of the elbow and supracondylar fracture of the humerus.

People who need to be examined: people with abnormal pain on their elbows.

Precautions

Taboo before inspection: no special contraindications.

Requirements for inspection: gentle manipulation, avoiding muscle tension and affecting the results of the examination.

Inspection process

The patient takes a seat or stands, the palm rests on the top of the head, and then actively stretches the elbow to check the relative position of the upper jaw of the humerus, the upper iliac crest and the olecranon.

Not suitable for the crowd

Generally no taboos.

Adverse reactions and risks

Generally not.