The relationship between the glenoid track and the range of shoulder motion: A cadaver study

Orthopaedics & Traumatology, Surgery & Research : OTSR
Nobuyuki YamamotoE Itoi

Abstract

The concept of the glenoid track has been proposed to evaluate the risk of dislocation. The glenoid track width was demonstrated to be 84% of the glenoid width in cadaveric shoulders and 83% in live shoulders. The glenoid track width seems to be affected by the range of motion. The purpose of this study was to determine the relationship between the glenoid track and the range of shoulder motion. Ten fresh-frozen cadaveric shoulders were used. The specimen was fixed to a shoulder-positioning device. The anterior rim of the glenoid was marked on the humeral head using a Kirschner wire with the arm in 60° of abduction. This marking was repeated with the arm in (1) horizontal flexion/extension and (2) internal/external rotations (0° to max). The distances from the Kirschner wire markings to the footprint of the rotator cuff tendon were measured. The greater the angle of the horizontal extension or external rotation, the smaller the glenoid track width, whereas the greater the angle of the horizontal flexion or internal rotation, the greater the glenoid track width. There was a negative relationship between them. The horizontal flexion/extension motion was demonstrated to affect the glenoid track width more than the internal/externa...Continue Reading

Citations

Mar 15, 2019·The American Journal of Sports Medicine·Jun KawakamiRyohei Isawa
Mar 9, 2021·JSES International·Brandon J EricksonReuben Gobezie

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