How many articulations does the humerus have?

How many articulations does the humerus have?

two articulation areas
The distal end of the humerus has two articulation areas, which join the ulna and radius bones of the forearm to form the elbow joint. The more medial of these areas is the trochlea, a spindle- or pulley-shaped region (trochlea = “pulley”), which articulates with the ulna bone.

How many bones does the humerus articulate with?

The humerus (/ˈhjuːmərəs/, plural: humeri) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections.

What bone does the humerus connect to?

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 do the humerus and radius articulate?

The radius articulates proximally at the elbow with the capitulum of the humerus and the radial notch of the ulna.

What muscles attach to the greater tuberosity of the humerus?

The greater tuberosity is the prominent area of bone at the top of the humerus and is the attachment for the two large, powerful rotator cuff muscles – supraspinatus and infraspinatus.

What part of the body is the humerus?

upper arm
The humerus is the bone in your upper arm. It’s located between your elbow and your shoulder, and consists of several parts that allow it to move freely in different directions.

What muscles flex the humerus?

The pectoralis minor and pectoralis major are large muscles of the chest that participate in many movements, including flexion of the humerus.

What does a broken humerus feel like?

A broken upper arm (fractured humerus) can be extremely painful, so much so that you may feel sick, dizzy or faint. Other symptoms of a broken upper arm are: You will be unable to use your arm. Your elbow or upper arm may be swollen.

What is unique about the humerus?

The Largest Bone in the Upper Arm The bottom of the humerus touches the top of the radius and ulna which joins the upper arm with the lower arm. The meeting of these bones allows for the wide range of motion which is possible at the shoulder joint, along with movement at the elbow.

Which is the longest bone in the human body?

The longest bone in the human body is called the femur, or thigh bone.

Is the humerus distal to the radius?

Distally, the humerus articulates with the radius and ulna to form the elbow joint. Humerus: The humerus attaches proximally to the scapula (shoulderblade) at the humeral head and distally with the radius and ulna (lower-arm bones) at the trochlea and capitulum, respectively.

What is a closed fracture of the humerus?

A proximal humerus fracture usually occurs close to the shoulder joint and can be located at different levels with different fracture patterns: simple or comminuted. A humerus shaft fracture, on the other hand, is one that is localized at the mid portion of the upper arm.