Glenoid Track (Hill-Sachs On/Off-Track)
Glenoid track: on-track, near-track or off-track Hill-Sachs lesion from the glenoid width, the defect and the Hill-Sachs interval.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Glenoid width
- 28 mm
- Anterior glenoid defect (d), 0 if none
- 5 mm
- Hill-Sachs lesion width
- 15 mm
- Bone bridge to the cuff footprint
- 5 mm
Result: Glenoid track 18.2 mm, Hill-Sachs interval 20 mm, distance to dislocation -1.8 mm: off-track, because the Hill-Sachs interval is wider than the glenoid track. Glenoid bone loss 17.9%.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Glenoid width (D)
- Anterior glenoid defect (d), 0 if none
- Hill-Sachs lesion width
- Bone bridge to the cuff footprint
How this is calculated
Citation
Di Giacomo G, Itoi E, Burkhart SS. Evolving concept of bipolar bone loss and the Hill-Sachs lesion: from "engaging/non-engaging" lesion to "on-track/off-track" lesion. Arthroscopy. 2014;30(1):90-98. Read the sources: Di Giacomo 2014 ↗, Int Orthop 2026 ↗, JSES Rev Rep Tech 2026 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.