1 Before you use it
What it is
Built for the overhead athlete, and the answer to why SPADI is useless on a thrower. Ten visual-analogue items about playing — arm feel during competition, velocity, control, endurance, pain while throwing, willingness to throw without hesitation.
When to reach for it
Any throwing or overhead athlete — baseline, in-season monitoring and return-to-throwing decisions.
Track it across a season, not just an episode. A drifting KJOC in a healthy-looking thrower is an early signal.
2 Giving it
Scoring
Ten 100 mm visual-analogue items, averaged to 0–100. Higher is better.
It is intended for athletes who are currently participating, and includes a set of qualifying questions about playing status. Score the playing status alongside the number.
What it doesn’t measure
Anything about the tissue. It measures performance and confidence in performance, which is why it pairs with, rather than replaces, your objective examination.
Repeat it
3 Reading the score
Interpreting it
Interpret against baseline and against the athlete's own in-season history.
Its ceiling is the point. A pitcher will score 100% on any daily-living instrument and still be unable to compete; KJOC is built at the level where the problem actually shows.
Is the change real?
On placement
Little Leaguer's shoulder, cleared on imaging, into a throwing programme. KJOC 58 at the start of the programme, 71 six weeks later; playing status 'playing with pain' both times.
Read it as 13 points, under the 15.1-point MDC (measured in overhead athletes), so it could be measurement noise. And the playing-status question hasn't changed — still competing with pain — which is the more important of the two readings.
Do hold the throwing volume, re-score at the end of the next block, and don't call it improvement until the status changes as well as the number.
Student trap. Using a daily-living shoulder score on an athlete who throws. They'll max it out and you'll have measured nothing.
Official source: pmc.ncbi.nlm.nih.gov. We don't host the form.
This is a learning tool. It does not diagnose patients and does not replace your clinical educator.
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