What happens if the surgical neck of humerus?
It is much more frequently fractured than the anatomical neck of the humerus. A fracture in this area is most likely to cause damage to the axillary nerve and posterior circumflex humeral artery.
What is the significance of anatomical neck of humerus?
The anatomical neck of the humerus is obliquely directed, forming an obtuse angle with the body of the humerus. It represents the fused epiphyseal plate.
What is the anatomical and surgical neck of humerus?
The anatomical neck of the humerus is the residual epiphyseal plate. An intertubercular groove appears proximally, which demarcates the two tubercles vertically. Following the tubercles is the surgical neck of the humerus, a site commonly susceptible to fractures.
Why surgical neck of humerus is clinically important?
Clinical Relevance: Surgical Neck Fracture The surgical neck of the humerus is a frequent site of fracture – usually by a direct blow to the area, or falling on an outstretched hand. The key neurovascular structures at risk here are the axillary nerve and posterior circumflex artery.
What are the signs and symptoms of a humerus fracture?
What are the symptoms of a humerus fracture?
- Pain.
- Swelling and bruising.
- Inability to move the shoulder.
- A grinding sensation when the shoulder is moved.
- Deformity — “It does not look right.”
- Occasionally bleeding (open fracture)
- Loss of normal use of the arm if a nerve injury occurs.
How would you distinguish between the anatomical neck and surgical neck of the humerus?
Anatomical Parts The circumference of its articular surface is slightly constricted and is termed the anatomical neck, in contradistinction to a constriction below the tubercles called the surgical neck which is frequently the seat of fracture. Fracture of the anatomical neck rarely occurs.
What muscles attach to the humerus?
Muscle Attachments
| Muscle | Attachment |
|---|---|
| Pectoralis Major | Upper Part of the Anterior Border |
| Triceps Brachii | Lower Part of the Lateral Border Lateral Supracondylar Ridge |
| Brachioradialis | Lateral Supracondylar Ridge |
| Extensor Carpi Radialis Longus | Lateral Supracondylar Ridge |
Why surgical neck is called surgical neck?
The circumference of its articular surface is slightly constricted and is termed the anatomical neck, in contradistinction to a constriction below the tubercles called the surgical neck which is frequently the seat of fracture.
What is the function of the head of the humerus?
Function. The head of the humerus makes up a portion of the ball-and-socket shoulder joint. This area also serves as the insertion point for muscles which make up the shoulder girdle.
Where is the surgical neck of the humerus?
The surgical neck of the humerus is a constriction below the tubercles of the greater tubercle and lesser tubercle, and above the Deltoid Tuberosity.
What is the medical definition of surgical neck?
medical Definition of surgical neck. : a slightly narrowed part of the humerus below the greater and lesser tubercles that is frequently the site of fractures.
Which is the constricted part of the humerus?
See illustration at spermatozoon. surgical neck of humerus the constricted part of the humerus just below the tuberosities. neck of tooth the narrowed part of a tooth between the crown and the root; called also cervix dentis and collum dentis.
Which is more often fractured, the neck or the humerus?
Neck of Humerus. It is much more frequently fractured than the anatomical neck of the humerus. A fracture in this area is most likely to cause damage to the axillary nerve and posterior circumflex humeral artery.
