Shoulder – Medial Rotation (Internal Rotation) – Articulations
Shoulder – Medial Rotation (Internal Rotation) – Articulations Exercise Description
Shoulder Medial Rotation (Internal Rotation) – Articulations is an active mobility drill for the glenohumeral joint. You’ll rotate the humerus inward with the elbow at your side while keeping the scapula quiet, emphasizing pure ball‑and‑socket rotation. This helps you explore and maintain comfortable internal‑rotation range and control through the rotator cuff. Primary internal rotators include the subscapularis, with assistance from the pectoralis major, latissimus dorsi, teres major, and anterior deltoid. At a gentle end range, you’ll feel a stretch bias on the posterior shoulder and external rotators (infraspinatus, teres minor, posterior deltoid). The focus is smooth, pain‑free motion, steady breathing, and precise alignment—not forcing range.
- Muscle Groups: Rotator Cuff, Shoulders
- Target Muscles: Infraspinatus, Teres Minor
- Assisting Muscles: Deltoid - Posterior
- Stabilizing Muscles: Rhomboid Major, Rhomboid Minor, Subscapularis, Trapezius - Lower Fibers, Trapezius - Middle Fibers
- Body Area: Upper Body
- Body Parts: Shoulders
- Body Surface: Back
- Body Symmetry: Unilateral
- Equipment: Bodyweight
- Exercise Patterns: Other
- Exercise Type: Stretching
- Functional Grouping: Rotator Cuff Stabilizers, Shoulder External Rotators
- Joint Involvement: Single-joint
- Muscle Location: Rear Rotator Cuff
- Movement Direction: Rotational
- Muscle Position: Posterior
- Gender: Male
How To Do The Shoulder – Medial Rotation (Internal Rotation) – Articulations Exercise
‘- Stand tall or sit upright with a neutral spine, ribs stacked over pelvis.
– Let the arm relax at your side; bend the elbow to 90 degrees so the forearm points forward, thumb up.
– Gently set the shoulder: slight scapular retraction and depression (down and back) without shrugging.
– Keep the elbow lightly pinned to your side throughout; forearm stays level.
– Rotate the forearm inward across the abdomen by turning the upper arm in the socket; avoid wrist flexion or forearm pronation.
– Move until you meet a firm, comfortable stretch—no pinching or pain at the front of the shoulder.
– Pause briefly, breathe slowly, and maintain tall posture; do not twist your torso or let the shoulder roll forward.
– Rotate back to neutral with control, keeping the scapula quiet.
– Option: repeat on the other side using the same cues.
– Stop if you feel sharp pain, numbness, or tingling.
Shoulder – Medial Rotation (Internal Rotation) – Articulations Tips
‘- Stand or sit upright with a neutral spine, keeping ribs stacked directly over your pelvis.
– Start with your arm relaxed at your side and elbow bent to 90 degrees so the forearm points forward with the thumb up.
– Gently set the shoulder by drawing the scapula slightly down and back without shrugging.
– Lightly pin your elbow to your side and keep it there so the movement stays in the shoulder.
– Keep your forearm level as you rotate; avoid letting it drift up or down.
– Rotate the forearm inward by turning the upper arm in the socket, not by bending the wrist or pronating the forearm.
– Move only to a firm, comfortable stretch and avoid any pinching or pain at the front of the shoulder.
– Maintain tall posture without twisting your torso or letting the shoulder roll forward as you move.
– Breathe slowly and steadily, and stop immediately if you feel sharp pain, numbness, or tingling.
Shoulder – Medial Rotation (Internal Rotation) – Articulations Beginner Introduction
Shoulder Medial Rotation (Internal Rotation) – Articulations is a controlled mobility exercise for the main shoulder joint, centered on slow, deliberate inward turning of the upper arm. It is usually done with the arm resting by the side and the elbow bent, so the movement comes mainly from the ball-and-socket joint while the shoulder blade stays relatively quiet. This places attention on the rotator cuff and nearby muscles of the chest, lats, and front of the shoulder, while a gentle stretch is often felt around the back of the shoulder and the muscles that turn the arm outward.
The drill emphasizes calm, easy movement rather than forcing extra range. Steady breathing, a relaxed neck and trunk, and an upright torso support smooth rotation and a comfortable stretch sensation instead of sharp discomfort. Because the motion is small and controlled, it highlights awareness of shoulder position, helping to refine alignment and coordination through the entire arc of inward rotation while staying within a pain-free zone.