All About Shoulders | Physiotherapy Guelph

May 18th, 2021

All About Shoulders
Guelph Physio 

Shoulder Anatomy  


The shoulder/pectoral girdle is very complex. This is what connects your arm to your body and allows for such a large range of motion. 

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  • The bones involved in the shoulder girdle are the clavicle (collarbone), scapula (shoulder blade), and humerus (upper arm) 
  • There are four articulations (joints) in the shoulder girdle. These are the glenohumeral, scapulothoracic, sternoclavicular, and acromioclavicular joints 
  • The four rotator cuff muscles of the shoulder are the subscapularis, supraspinatus, infraspinatus, and teres minor. These are very important in the stability of the shoulder 
  • The more visible shoulder muscles that we can see are the anterior, lateral, and posterior deltoid muscles 
  • The main muscles involved in the shoulder girdle are the pectoralis minor, serratus anterior, rhomboids, levator scapulae, and the trapezius muscles     

Fixing Posture While Seated at a Desk to Prevent Shoulder Pain  

Have you ever experienced pain in your upper back and shoulders from sitting at your desk? Fixing your posture may be the trick to reducing your pain! Here are some tips for improving your posture while sitting at a desk on a computer.   

  • Keep your feet flat on the floor 
  • Keep your hips towards the back of your chair  
  • Keep your elbows close to your body and your forearms, wrists, and hands straight in front of you  
  • Make sure your shoulders are relaxed, but not rounded  

Looking to improve your shoulder mobility and strength with Guelph physiotherapy services? Head to our Instagram page (@hpcguelph) to check out some outstanding video instruction!

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