upper extr sports med

Deltoid

A large triangular muscle located on the shoulder, responsible for the abduction, flexion, and extension of the arm. It plays a key role in various upper extremity movements.

Latissimus Dorsi

A large, flat muscle located in the lower back that extends, adducts, and medially rotates the arm. It is crucial for movements such as pulling and lifting.

Trapezius

either of a pair of large triangular muscles extending over the back of the neck and shoulders and moving the head and shoulder blade

Rhomboid
Rhomboid Major

a deep muscle located in the upper back, between the shoulder blades

Supraspinatus

a small muscle located in the shoulder region that plays a crucial role in stabilizing and moving the arm

teres major

a muscle located in the posterior (back) of the shoulder

teres minor

a narrow, elongated muscle in the shoulder, part of the rotator cuff, that originates from the lateral border of the scapula and inserts on the greater tubercle of the humerus, primarily acting to externally rotate the arm

Infraspinatus

a triangular-shaped muscle located in the back of the shoulder blade (scapula)

Triceps Brachii

the large muscle at the back of the upper arm.

Biceps Brachii

flex the elbow and supinate (rotate outwards) the forearm, and also contributes to shoulder stability

Pectoralis Major

Large, fan-shaped muscle that forms the bulk of the chest muscles

Flexor Digitorum Superficialis

primarily flexes the middle phalanges (the bones in the middle of your fingers) at the proximal interphalangeal joints, and also assists in flexing the wrist and the metacarpophalangeal joints

Flexor Pollicis Longus

a deep muscle located in the forearm that flexes the thumb

Extensor Digitorum

primarily extends the fingers (digits 2-5) at the metacarpophalangeal and interphalangeal joints, and also contributes to wrist extension

Extensor Pollicis Brevis

extends and slightly abducts the thumb