Where is the location of the humerus?
upper arm
The humerus is a long bone located in the upper arm, between the shoulder joint and elbow joint. The proximal humerus connects to the shoulder through the glenoid fossa of the scapula, forming the glenohumeral joint. The distal humerus articulates at the elbow to the radius and ulna in the forearm.
Where is the humerus and ulna located?
Your arm is made up of three bones: the upper arm bone (humerus) and two forearm bones (the ulna and the radius).
What are the landmarks on the humerus?
anatomical landmarks were located on the humerus: the medial epicondyle, the lateral epicondyle, and the lesser tubercle. Four anatomical landmarks were palpated on the ulna: the styloïd process and three points around the ulna head which averaged location gave an estimation of the ulna head center (Fig.
What muscle is located on the proximal humerus?
Muscles inserting on the proximal humerus influence the direction of fragment displacement fragments. The pectoralis major pulls the humeral shaft anteromedially. The supraspinatous and infraspinatous pull the greater tuberosity posterosuperiorly, and the subscapularis pulls the lesser tuberosity medially.
Is the humerus on the left or right?
Left or Right? siding a HUMERUS – YouTube
What type of bone is the 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 location of the ulna?
forearm
The ulna is one of two bones that make up the forearm, the other being the radius. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally. It is located in the medial forearm when the arm is in the anatomical position. It is the larger of the two forearm bones.
Why humerus is called humerus?
Etymology. The word “humerus” is derived from Latin: humerus, umerus meaning upper arm, shoulder, and is linguistically related to Gothic ams shoulder and Greek ōmos.
What are the 6 bony landmarks?
Bony Landmarks
- Epiphysis. The term epiphysis can be traced back to its root meaning.
- Diaphysis. The term diaphysis can also be traced back to its Latin stems.
- Tubercle. A tubercle is a small, rounded projection protruding from a bone.
- Tuberosity.
- Process.
- Condyle.
- Trochanter.
- Heads.
What is the top of the humerus called?
The lateral portion of this surface consists of a smooth, rounded eminence, named the capitulum of the humerus; it articulates with the cup-shaped depression on the head of the radius, and is limited to the front and lower part of the bone.
What is the most common site for a proximal humerus fracture?
The most frequently fractured site of the humerus especially in elderly is the surgical neck which is an area of constriction distal to the tuberosities.
Which 2 muscles are attached to the humerus?
The pectoralis major, latissimus dorsi, deltoid, and rotator cuff muscles connect to the humerus and move the arm. The muscles that move the forearm are located along the humerus, which include the triceps brachii, biceps brachii, brachialis, and brachioradialis.
What is the upper left arm called?
Triceps brachii.
This muscle, usually referred to as the triceps, runs along the humerus and allows for the flexion and extension of the forearm.
What part of the humerus is the most commonly fractured?
What is a broken humerus called?
A humerus fracture is the medical name for breaking the bone in your upper arm (your humerus). Humerus fractures are usually caused by traumas like car accidents or falls. If you break your humerus, you might need surgery to repair your bone.
What is the humerus also known as?
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.
Why is ulna called ulna?
The ulna (pl. ulnae or ulnas) is a long bone found in the forearm that stretches from the elbow to the smallest finger, and when in anatomical position, is found on the medial side of the forearm. That is, the ulna is on the same side of the forearm as the little finger.
What is another name for humerus?
It is sometimes popularly referred to as ‘the funny bone’, possibly due to this sensation (a “funny” feeling), as well as the fact that the bone’s name is a homophone of ‘humorous’.
How do you remember the humerus bone?
Tips to Memorize the Skeletal Bones Anatomy & Physiology – YouTube
What were the 4 types shapes of bones?
There are four different types of bone in the human body:
- Long bone – has a long, thin shape.
- Short bone – has a squat, cubed shape.
- Flat bone – has a flattened, broad surface.
- Irregular bone – has a shape that does not conform to the above three types.
What are the three common sites of fracture in the humerus?
There are three locations that humerus fractures occur: at the proximal location, which is the top of the humerus near the shoulder, in the middle, which is at the shaft of the humerus, and the distal location, which is the bottom of the humerus near the elbow.
What is a 3 part fracture of proximal humerus?
3-PART FRACTURE: This is when the proximal humerus is broken into three pieces, and there are then two fracture lines on x-ray. This most often involves the greater tuberosity and the surgical neck of the humerus.
What nerve runs along the humerus?
In the upper arm the radial nerve wraps around the back side of the humerus bone. The nerve gives function to the triceps muscles on the back of the arm to straighten the elbow. Because the radial nerve wraps around the humerus bone, it can be stretched or torn when the humerus bone is broken.
What is the top of your arm by your shoulder called?
Humerus: The largest bone of the arm, the humerus connects to the scapula and clavicle in the shoulder. The head of the bone has a ball-like knob to create a ball-and-socket joint with the scapula.
What is the upper arm near the shoulder called?
humerus
Holding the upper arm (humerus) to the socket of the shoulder (glenoid fossa) is the job of the rotator cuff, which is made up of four muscles and their tendons.