The CROM has set the standard for Cervical Range of Motion measurements. The CROM 3, the next generation of measurement instruments, utilizes a ball technology that makes the CROM 3 easier to use. The ball technology reduces the inclinometer sensitivity to vertical positioning and a three inch dial provides readings to 1 degree. The CROM 3 retains all the features of the CROM.
The CROM 3, like the CROM, is located to anatomical landmarks with inclinometers zeroed to the instrument frame eliminating initial head positioning errors. Securing the frame to the head with straps eliminates tracking errors since the inclinometers will not slip in reference to the head during measurements.
A compass is used for rotation measurements allowing measurements to be made in the preferred upright position. A magnetic yoke placed on the shoulder provides a magnetic reference for the compass readings. As the head rotates the compass indicated the angle of rotation in reference to the shoulder allowing fast, accurate readings that remove shoulder substitution errors.
Can be used to perform the following measurements: