Digital fluoroscopic video assessment of glenohumeral migration: Static vs. Dynamic conditions

  • Teyhen D
  • Christ T
  • Ballas E
 et al. 
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Abstract

The purpose was to compare glenohumeral (GH) migration, during dynamic shoulder elevation and statically held positions using digital fluoroscopic videos (DFV). Thirty male volunteers (25±4 years) without right shoulder pathology were analyzed using DFV (30. Hz) during arm elevation in the scapular plane. DFV were obtained at the arm at side position, 45°, 90°, and 135° for static and dynamic conditions. GH migration was measured as the distance from the center of the humeral head migrated superiorly or inferiorly relative to the center of the glenoid fossa. Inter-rater reliability was considered good; ICC (2,3) ranged from 0.83 to 0.92. A main effect was revealed for contraction type (p=0.031), in which . post-hoc t-tests revealed that humeral head was significantly more superior on the glenoid fossa during dynamic contraction. A main effect was also revealed for arm angle (p

Author-supplied keywords

  • Biomechanics
  • Fluoroscopy
  • Glenohumeral joint
  • Rotator cuff
  • Subacromial space

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Authors

  • Deydre S. Teyhen

  • Tansy R. Christ

  • Elissa R. Ballas

  • Joshua D. Walters

  • Douglas S. Christie

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