The arm extends from the shoulder to the wrist, including the upper arm and forearm. Different muscles may work together in intricate ways to help the arm, wrists, fingers, and hands function ...

About eight shoulder muscles attach to the shoulder blade (scapula), upper arm (humerus), and collar bone (clavicle). Many other muscles play a part in stabilizing and guiding the shoulder and its ...

Upper arm bone (humerus) Your deltoid muscles start near your clavicle and scapula. The end of the muscles, or insertion point, attaches near your humerus.

Your rotator cuff is made up of muscles and tendons that keep the ball (head) of your upper arm bone (humerus) in your shoulder socket. It also helps you raise and rotate your arm. It’s a ...

Stretching is often a quick fix for shoulder stiffness. To address the root cause, here are four targeted exercises that not ...

The shoulder is a ball-and-socket joint that connects the upper arm bone to the shoulder blade. Four muscles attach to the bones of the shoulder joint, and these form the rotator cuff. Performing ...

This is where your upper arm bone, or humerus, ... A 2007 study found the triceps accounts for about 55 percent of the muscle mass in the arm while the biceps accounts for about 30 percent.

The push-up isn't just for the chest. This article answers the question 'what muscles do pushups work' and provides tips on form, mistakes, and variations.

Fractures — The collarbone, upper arm, or shoulder blade could all experience a fracture (cracked or broken bone). This is most often caused by a fall, accident, or sports-related contact. Tendon ...

Instead of trying to reinvent the human arm, German pneumatics supplier Festo decided to model a real one. The showcase product, called Airic’s_arm, has artificial bones which mimic real human ...