Sandor Physio

24/03/2026

24/01/2026

🦴 Shoulder Stability Is a Team Effort

This diagram highlights how multiple shoulder and scapular muscles work together to create smooth, controlled arm movement. Rather than acting in isolation, these muscles form force couples—balanced pulls that guide motion while keeping the shoulder joint stable.

The upper and lower trapezius work in synergy with the serratus anterior to produce scapular upward rotation during arm elevation. This movement is essential to clear the acromion, maintain subacromial space, and allow the arm to lift efficiently without compression of soft tissues.

The rhomboids and levator scapulae provide important stabilizing and controlling forces, preventing excessive protraction or elevation of the scapula. Their role becomes especially important during controlled lowering of the arm and postural correction.

At the glenohumeral joint, the rotator cuff acts as a dynamic stabilizer. While the deltoid generates powerful arm elevation, the rotator cuff counterbalances this force by compressing the humeral head into the glenoid, preventing upward translation and maintaining joint centration.

When these force couples are disrupted—due to weakness, poor motor control, or posture-related imbalance—the result can be shoulder pain, impingement, reduced performance, and increased injury risk. Restoring balanced muscle activation is therefore a cornerstone of rehabilitation, athletic conditioning, and ergonomic training.

🔬 Biomechanics | Shoulder Mechanics | Movement Science
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27/12/2025

26/12/2025

07/11/2025

👉(A) Ideal lumbar posture and lumbar lordosis associated with a normal length of the psoas and lumbar erector spinae and

👉(B) altered biomechanical alignment of stance associated with tightness of the anterior hip capsule and iliopsoas. Under normal conditions, alignment of the acetabulum and femoral head is such that compression and shear stresses are optimally distributed protecting the hyaline cartilage and subchondral bone. Moreover, resting muscle tonus is balanced between hip flexors and extensors in a way that the metabolic cost to maintain balance is minimized. With plastic shortening of the anterior hip capsule and hip flexor muscles, more energy, i.e., activation of hip extensors, is needed to control a “quiet” bipedal stance. Increased isometric muscle activation simultaneously increases joint compression stress, which is poorly distributed because of the misalignment of the acetabulum and femoral head secondary to a chronic hip flexion pose.

12/08/2025

28/09/2024

18/09/2024

11/07/2024

https://youtu.be/cfYxsL55kfU?si=QTtUrcST5m-ctq6-

Professor Dr. Matthias Fink, Facharzt für Physikalische und Rehabilitative Medizin, setzt bei seinen Rückenschmerz-Patienten die Typaldos-Methode ein. Das Be...