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Handheld digital pressure algometer at three different locations. A. ipsilateral supraspinatus, B. ipsilateral thenar eminence, C. contralateral dorsal web space
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This was done using a handheld digital pressure algometer (Wagner Instruments FPX 25, Greenwich, CT) with a 1 cm diameter rubber tip applied at 1 kgf/cm2 to ipsilateral supraspinatus, ipsilateral thenar eminence, and contralateral dorsal web space between toes 1 and 2 (Figure 1).
Delfi Personalized Tourniquet system measuring limb occlusion pressure
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The Delfi Personalized Tourniquet system (Delfi Medical, Vancouver, Canada) was used, with cuff placed around proximal humerus (Figure 2) during three common therapeutic exercises in standard of care of patients presenting with SAIS: side lying external rotation, prone horizontal abduction, and standing scaption.
Exercise selection with BFR start and end positions. A. Side lying external rotation start and end position, B. Prone horizontal abduction start and end position, C. Standing scaption start and end position
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Figure 3 demonstrates start and end positions for all three exercises.