What is the neck of the humerus called?
As the neck continues along the humerus body, it is called the surgical neck (so named because this is the location of many fractures that require surgery). 3. The greater tubercle (a round projection, also called a nodule), is where muscles and ligaments attach.
What is the meaning of shaft of humerus?
the humeral shaft is the region of the humerus distal to the surgical neck and proximal to the epicondyles 1. the insertion of pectoralis major muscle proximally and brachialis muscle distally may also be used as anatomical landmarks to define the region of the humeral shaft.
What is the significance of anatomical 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 called so?
As well as its true anatomical neck, the constriction below the greater and lesser tubercles of the humerus is referred to as its surgical neck due to its tendency to fracture, thus often becoming the focus of surgeons.
Where is humerus neck?
The anatomical neck of the humerus is located distal to the head of the humerus, at an oblique angle to the shaft of the humerus. The surgical neck of the humerus on the other hand is a constriction of the humerus located inferior to the greater and lesser tubercles.
What is a humerus?
The humerus is a long bone which consists of a shaft (diaphysis) and two extremities (epiphysis). It is the longest bone of the upper extremity.
What is the structure of the humerus?
What does anatomical neck mean?
Anatomical Parts The Anatomical Neck (collum anatomicum) is obliquely directed, forming an obtuse angle with the body. It is best marked in the lower half of its circumference; in the upper half it is represented by a narrow groove separating the head from the tubercles.
What is anatomical neck and 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. Fracture of the anatomical neck rarely occurs.
What is 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.
What is anatomical and surgical neck?
What is the function of humerus?
The distal humerus articulates at the elbow to the radius and ulna in the forearm. The humerus provides structural support to the arm and is an insertion point for many important muscles in the upper body, such as pectoralis major, latissimus dorsi, rotator cuff muscles, and more.
Which is the humerus bone?
The humerus — also known as the upper arm bone — is a long bone that runs from the shoulder and scapula (shoulder blade) to the elbow. Fractures of the humerus are classified in one of two ways: proximal humerus fracture or humerus shaft fracture.
What is base of neck called?
Your cervical spine — the neck area of your spine — consists of seven stacked bones called vertebrae. The first two vertebrae of your cervical spine are unique in shape and function. Your first vertebra (C1), also called the atlas, is a ring-shaped bone that begins at the base of your skull.
What is the difference between the surgical neck and anatomical neck of the humerus?
What is anatomical neck?
Description. The Anatomical Neck (collum anatomicum) is obliquely directed, forming an obtuse angle with the body. It is best marked in the lower half of its circumference; in the upper half it is represented by a narrow groove separating the head from the tubercles.
Where is the neck of the humerus?
What is humeral neck fracture?
Fractures of the anatomical neck of the humerus are an extremely rare pathological entity in the field of orthopedic surgery. One of the most feared complications associated with anatomical neck fracture of the humerus is avascular necrosis (AVN).
What is the structure of humerus?
What is the anatomical neck of the 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. It gives attachment to the capsular ligament of the shoulder joint except at the upper inferior-medial aspects It is best marked in the lower half…
What is the anatomy of the neck?
The anatomical neck is a slight narrowing below the articular surface of the head. Here, the joint capsule of the shoulder joint is attached. The greater tubercle is the most lateral portion of the proximal end of the humerus.
What are the different aspects of the humerus?
This article will talk about these aspects in detail, including muscular attachments and anatomical landmarks, followed by an overview of clinical pathology related to the humerus. The proximal end of the humerus consists of a head, an anatomical neck and the greater and lesser tubercles.
What is the anatomy of the left humerus?
Left humerus seen from the front (anatomical neck labeled at upper left). The anatomical neck of the humerus is obliquely directed, forming an obtuse angle with the body of the humerus.