The scapula and arm are connected to the body by multiple muscle and ligament attachments.
Shoulder blade is the triangular bone that forms the back of your shoulder, it may limit arm movements and interfere with daily activities. This pain can range from being sharp or burning, such as between the spine and shoulder blade, to tender or achy across the shoulder or upper back.

SYMPTOMS

• Pain around the scapula, especially on the top and medial (inner) border
  
  
• Weakness in the affected arm, your arm may feel tired or “dead” when you try to use it vigorously
  
  
• Fatigue with repetitive activities, especially overhead movements
  
  
• Limited range of motion, you may be unable to raise your arm above shoulder height
  
  
• A crunching or snapping sound with shoulder movement
  
  
• Noticeable protrusion or “winging” of the scapula
  
  
• A drooped or forward tilted posture on the affected side

An alteration in scapular positioning or motion can make it difficult to move your arm, especially when performing overhead activities, and may cause your shoulder to feel weak. An alteration can also lead to injury if the normal ball-and-socket alignment of your shoulder joint is not maintained.