How do you write range of motion in a clinical note?

State the joint, the movement, whether the motion was active or passive (AROM or PROM), the side, and the measured arc in degrees from the zero starting position — for example: Right knee flexion AROM 0–120°. Add the instrument used, the patient position if it deviates from standard, and pain or end-feel when clinically relevant. Consistent method between visits is what makes the numbers comparable.

What is the difference between AROM and PROM in documentation?

AROM (active range of motion) is the arc the patient produces with their own muscle power; PROM (passive range of motion) is the arc available when the examiner moves the joint. Notes should state which was measured, because the two can differ meaningfully and the gap between them is itself a clinical finding.

Should ROM be compared to the other side or to normal values?

Both, when possible. The contralateral limb is the best available reference for that individual patient, and published normative values such as the AAOS reference ranges provide the population benchmark. Documenting the involved side, the uninvolved side, and the normal range together makes progress and remaining deficit obvious at a glance.

How to document range of motion: Notation, examples, and reports

Q: What does 0–120 degrees mean in ROM documentation?

It means the joint moved from the 0° anatomical starting position through an arc to 120°. In the standard 0–180 notation system, every joint starts at 0° in anatomical position and the number records how far it traveled. A knee that flexes 0–120° moved through 120 degrees of flexion.

Q: How do you document an extension lag or deficit?

Record how many degrees the joint remains short of the 0° neutral position — for example, a knee that lacks the last 10 degrees of extension can be written as −10° extension, as 'lacks 10° of extension,' or as a flexion arc of 10–120°. Whichever convention you use, use it consistently and make the direction unambiguous, since an extension deficit and hyperextension are opposite findings.

Updated July 2026

A complete ROM entry states the joint, the movement, whether the motion was active or passive, the side, and the measured arc in degrees from the 0° starting position — for example, Right knee flexion AROM 0–120°. The conventions below are what make a number written today comparable to one written next month, by you or by a colleague.

The 0–180 convention

Standard goniometry uses the 0–180 notation system: every joint starts at 0° in anatomical position, and the recorded value is how far the segment travels from that zero. A shoulder flexed overhead through a full arc is written 0–180°; a knee flexed to 120° is 0–120°. The starting position matters as much as the end number — if the joint cannot reach neutral, say so explicitly (see deficits below) rather than silently measuring from wherever it started.

What a complete entry includes

Joint and movement — knee flexion, shoulder abduction, wrist ulnar deviation.
Side — right or left; involved vs. uninvolved.
AROM or PROM — the patient's own motion and the examiner-assisted arc are different findings; name which one you measured.
The arc in degrees — from zero: 0–120°, not "120".
Method, when it matters — instrument and patient position, especially if they deviate from your standard (supine vs. seated changes numbers).
Clinical qualifiers — pain at end range, end-feel, guarding — when they explain the number.

Documenting deficits and hyperextension

Motion short of neutral needs unambiguous notation. A knee lacking the last 10° of extension can be written as −10° extension, as lacks 10° of extension, or as a flexion arc of 10–120° — all three are used in practice; pick one convention and keep it. Hyperextension is the opposite finding and is written as motion past zero (for example, elbow extension 0° to 10° of hyperextension). Because "10° of extension" alone could mean either, the safest habit is to always mark deficits with a minus sign or the word "lacks."

Example note entries

// Single measurement
R knee flexion AROM 0–120°, supine. Pain-free.

// Deficit + comparison to the other side
R knee extension AROM −10° (lacks 10°); L knee extension 0°.

// Progress across visits
R shoulder flexion AROM: 0–95° (6/12) → 0–120° (6/26) → 0–140° (7/10).

// Hand: per-joint + Total Active Motion
R index finger AROM: MCP 0–85°, PIP 0–100°, DIP 0–60°; ext lag PIP −5°. TAM 240° (normal 280°).

Compare to the other side, and to normal

The contralateral limb is the best reference for that patient; published normative values are the population benchmark. Documenting all three — involved, uninvolved, and the AAOS normal range — makes the remaining deficit legible at a glance to anyone who picks up the chart. For the hand, per-digit Total Active Motion compresses twelve joint measurements into one trackable number.

From reading to report

The transcription step — instrument to scratch note to chart — is where measurements get lost or garbled. This is the part software genuinely improves: the Goniometer app saves each reading to a patient profile as it's locked, keeps the arc, side, movement, and date together, and exports the visit as a PDF or CSV. Free users get watermarked exports and one saved profile; Pro produces watermark-free reports on your clinic's letterhead with progress trend charts across visits — a document ready to drop into the chart.

Range of motion report exported from the Goniometer app: measurements by joint with sides, dates, degrees, and normal ranges on clinic letterhead. — An actual ROM report exported from the app — joint, side, arc, date, and normal range in one document.

Frequently asked questions

How do you write ROM in a note?

Joint + movement + AROM/PROM + side + arc from zero: R knee flexion AROM 0–120°. Add instrument, position, and pain/end-feel when relevant.

What does 0–120° mean?

The joint moved from the 0° anatomical starting position through 120 degrees of motion. In the 0–180 system every measurement starts at zero.

How do you document an extension lag?

As degrees short of neutral, marked unambiguously: −10° or lacks 10° of extension. Keep one convention across your notes.

AROM vs. PROM — which goes in the note?

Whichever you measured — and say which. The difference between them is itself a finding worth recording.

Do I compare to normal values or the other side?

Both when possible: contralateral side for the individual baseline, AAOS normals for the population reference.

Measurements that document themselves. Lock a reading, and the joint, side, arc, and date are saved — export the visit as a report. Download Goniometer on the App Store.

References

Norkin CC, White DJ. Measurement of Joint Motion: A Guide to Goniometry. F.A. Davis.
American Academy of Orthopaedic Surgeons (AAOS). Normal range-of-motion reference values, as used throughout the Goniometer app.