| 
             Empty Can Test  | 
              
              
                | 
            
            Examination type | 
                
				Muscle test 
				(strength) | 
              
              
                | 
            
            Patient & Body Segment Positioning | 
                
				 
				The patient 
				stands with elbows extended and both shoulders in 90 degrees of 
				abduction, 30 degrees of horizontal adduction and full internal 
				rotation so that the thumbs of both hands are pointing towards 
				the floor.  | 
              
              
                | 
            Examiner Position | 
                
				Face the 
				patient with your hands on the superior aspect of the patient’s 
				elbows. | 
              
              
                | 
            Tissues 
            Being Tested | 
                
				Mainly tests 
				the supraspinatus muscle, but also affects the infraspinatus 
				muscle and the middle head of the deltoid muscle | 
              
              
                | 
            Performing the Test | 
                
				 
				Ask the 
				patient to resist you as you slowly apply downward pressure on 
				the superior aspect of the elbows.  | 
              
              
                | 
            
            Positive Test | 
                
				Pain and/or 
				weakness in the affected shoulder | 
              
              
                | 
            
            Interpretation | 
                
				 
				Inflammation 
				or strain of supraspinatus; possible rupture of supraspinatus 
				tendon  | 
              
              
                | 
            
            Common errors in 
            performing exam | 
                
				Horizontally 
				adducting the shoulder to much causes involvement of the 
				anterior portion of the deltoid. | 
              
              
                | 
            
            Factors possibly 
            resulting in misinterpretation | 
                
				Incorrect 
				placement of patient’s arm allows other muscles to resist the 
				force possibly resulting in a false negative test. | 
              
              
                | 
        Related tests | 
                
				Drop-arm test, Shoulder abduction test | 
              
              
                | 
            
            References | 
                
				 
				Magee. 
				Orthopedic Physical Assessment. 4th Ed. 2002. pp.396. 
				
				
				
				
				http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7632387&dopt=Citation
				  | 
              
              
                | 
            
            Links: | 
                
             
			
			
			
			http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=7632387&dopt=Citation
			 
				 | 
              
              
                
                
                  
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