Simultaneous movement between the scapula and humerus is referred to as Scapulohumeral Rhythm. The shoulder has three degrees of movement, 1 degree (60 degrees) in the ST joint and two degrees (120 degrees) in the GH joint. Motion must be distributed evenly between the two joints in order to achieve full range of motion. Having the two joints working together, limits the stress put on a singular joint. It is important for the two joints to be congruent with one another so the two structures may move synchronously. The scapula plays a huge role in stabilizing the GH joints in order to achieve total motion. Each joint contributes to the total amount of movement that may take place at the shoulder, therefore, dysfunction at one will result in decrease of ROM due to the increase risk of impingement, pain, and overall function. Scapulohumeral Rhythm ensures the healthy length-tension relationships of the two structures while moving together and acting against force.
In order to learn more about the brain and it's role in social isolation, I watched the TedxMidAtlantic Talk with Rachel Wurzman. She focuses on a specific area of the brain, the striatum, which she believes helps us better understand our body's habits and urges when social isolation begins to take its toll on our overall well-being. The striatum is an area of the brain responsible for voluntary movement and control. Studies have shown that the striatum actually contains neurons which are related to our movement and reward, more specifically, our social interaction and the internal reward that comes as a result. Rachel goes on to explain the many different social isolation situations that can severely impact our need for reward such as social media comparison and trouble connecting with others because of physical differences. However, due to current events, my mind couldn't help but relate everything she spoke about with COVID-19 and social distancing. (We will circle ba...
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