Certain researches that includes under arm reaches and over head reaches feels punishing , does have we ever thought what can be the reason for this punishment. This kind of pinching feeling is one of the major percentages of patients visiting at physiotherapy clinic. We called it as “shoulder impingement”.
The ball and socket joint of the joint of the shoulder is all covered by good musculature structure. The convex ball of arm fits perfectly into the concave structure of shoulder with help of these muscles. The anatomy of shoulder complex is that a peak/hook shape bone is connected to your collar bone. The space between the hook and the ball shape structure of shoulder complex is where structures responsible to hold it pass through. When the space between the hook ball is reduced it causes some certain sort of impingement hence pinching feels.
Shoulder impingement syndrome is frequently seen in people doing repetitive overhead work like swimming, volleyball, baseball, etc.
It is observed that the space between the hook and ball is reduced due to the misalignment of scapula and how well a patient controls it. It can be felt if you sit slouch and try to lift your shoulder up. On the other hand if you sit erect and tall and performs similar shoulder movement no any sort of pinching would be felt. Beside abduction (movement of your arm), sitting in slough position, there can other reasons contributing miss alignment of scapular blade.
These certain impairments can be stiffness or weakness in one or more areas surrounding thoracic region (scapular region). Stiffness is accepted at thoracic spine; the part which makes up middle and upper back.
The part that is responsible to make you sit slouch. Also the muscle weakness felt around shoulder blade responsible for poor mechanics. The treatment should focus on positional impairment and stiffness around thoracic spine with muscular weakness. a few exercises are :
1. thoracic extension on foam roller
2. wall slides
3. prone lift up
4. quadrupeds forward rocking