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. 2023 Jan 27;8(1):26–34. doi: 10.1530/EOR-22-0008

NGH classification.

G (glenoid) H (proximal humerus)
0 – No X-ray changes of glenoid 0 – No X-ray changes of proximal humerus
1 – Partial glenoid degeneration 1 – Partial proximal humerus degeneration (tuberosities preserved)
2 – Total glenoid degeneration 2 – Total proximal humerus degeneration (tuberosities not preserved)