Why is it essential that both anterior and posterior muscles of the shoulder joint be properly developed?

Answer 1

The muscles in the shoulder are the stabilizers for the humeral head. They have to be strong and balanced to keep the humerus correctly fitted into the socket when the shoulder is moving, all of these muscles work together in order to keep the humerus in line. If some of the muscles are stronger than others it stands to reason that the semidry would be thrown off therefore causing the humerus to not be centered in the socket and this can lead to problems like shoulder impingement and instability. The posterior shoulder girdle is extremely important for balance. So, if the strength and stabilization are not apparent in the scapulo-thoracic area, acute shoulder pains like those listed above and rotator cuff tendonitis can and will accrue. When unequally balanced persons, both young and old do a lot of lifting or overhead activities using the arm like in construction or painting and sporting actives like swimming, Baseball and tennis they can all easily fall victim to impingement, instability injuries and pain related events. The rhomboids and lower traps are the two main scapula retractors and should to be strengthened in order to enhance stability. Imbalance in the shoulder, will result in poor scapular stabilization, the non-mirrored muscles are the ones that work to stabilize the scapula. Over-developed mirror muscles can lead to a round-shouldered posture, which will place the scapula in the wrong place. Balance is the key to injury prevention in the shoulders. Too many athletes and weight trainers focus on developing the upper Trapezius, anterior deltoid and pectorals and not enough time developing the lower Trapezius, rhomboids, latissimus dorsi and rear deltoid. In closing, addressing muscular imbalance in the shoulder is very important for the prevention injuries.