Range of Motion
Goniometer
ROM measurement via photo, live camera or manual entry.
Modules
- Fotoğraf üzerinden EHA ölçümü
- Canlı EHA ölçümü
- Manuel EHA ölçümü
The Goniometer lets you measure joint range of motion (ROM) in three ways: on a photo, with the live camera or by manual entry. The joint axis and two arms are defined, and the angle is calculated in degrees and saved to the client profile.
What Is It Used For?
- Recording active and passive range of motion
- Tracking recovery of motion after surgery or injury
- Comparing the difference between right and left sides
- Documenting change before and after treatment
Measured Parameters
- Joint angle (degrees)
- Joint, movement direction and side (e.g. right shoulder flexion)
- Range of motion from start to end position
- Left-right difference and change from earlier measurements
Setup and Camera Placement
- The camera should be perpendicular to the plane of movement: from the side for flexion/extension, from the front or back for abduction/adduction.
- Keep the joint in the centre of the frame, with the segments on both sides fully visible.
- Hold the camera at joint height, about 1.5–2.5 metres away.
- Position the client in the standard goniometric test position (sitting, lying or standing).
Tips for Accurate Measurement
- Watch for compensations such as trunk lean or shoulder hiking; stabilise the proximal segment if needed.
- The joint and landmarks should not be covered by clothing.
- If the camera is not perpendicular to the movement plane, the angle may appear different from its true value.
- Use the same position, landmarks and module at follow-up.
- Note whether the measurement was active or passive.
How Is the Test Done?
- Choose the module: photo, live or manual measurement.
- Select the joint, movement and side.
- The client moves to end range; take the photo or watch the angle on the live view.
- In photo mode, place the axis and arm points on the anatomical landmarks.
- Save the angle and repeat for the other side if needed.
What Will I See on the Results Screen?
- The angle drawn on the image and its value in degrees
- A record labelled with joint, movement and side
- Measurement history in the client profile and change over time
Interpreting the Results
- Values are most meaningful when compared with the opposite side and the client's earlier measurements.
- Reference ranges vary with age, sex and individual characteristics; a value below reference does not by itself indicate a problem.
- In goniometry, differences of up to about 5° may fall within measurement variability.
- A marked gap between active and passive range can be explored further in the clinical examination.
Clinical Use Example
In rehabilitation after total knee replacement, knee flexion and extension are measured on a photo in the same position each week. The weekly trend is followed in the profile and progress towards the functional target range is shared with the client.
