Information on Angle Measurement

Trigonometry – More Than Just Measuring Angles

The range of motion (ROM) of a joint is one of the most important parameters in a physical therapy assessment. Normal values are defined for major joints—deviations indicate limitations that must be documented and treated. Without regular goniometric measurement, the success of treatment remains subjective.

Types of Protractors and Their Uses

Baseline Goniometer – Industry Standard

Baseline is the most widely used brand for in Swiss physical and occupational therapy practices. Sturdy plastic construction, precise degree markings, compatible with international ROM standards (AAOS, AMA).

Frequently Asked Questions

What Size I Size ?

Small (12 cm) for and toes, medium (20 cm) as an all-purpose size, large (30 cm) for and shoulders. for fully equipped practice, we recommend all three sizes.

Digital or analog?

Analog: durable, affordable, no battery required. Digital: faster readings, lower measurement error when time is limited. for , analog devices are perfectly adequate.

How is a goniometer used?

One axis is aligned with the proximal bone segment, the other with the distal segment—the pivot point is at the center of the joint. Measurement using the neutral-zero method.

Consulting & Selection

Do you have questions about equipping your practice? Our team is here to help—by phone, email, or at our Zurich showroom.