Normal kinematics of the upper cervical spine during the Flexion-Rotation Test - In vivo measurements using magnetic resonance imaging.

The Flexion-Rotation Test (FRT) is proposed to assess mobility primarily at C1-C2. However, there is no in vivo measurement investigating the validity of the FRT. The purpose of this study was 1) to examine measurement reliability of segmental upper cervical movements using magnetic resonance imaging and 2) to investigate the content validity of the FRT.

Strain reduction of the extensor carpi radialis brevis tendon proximal origin following the application of a forearm support band.

Study Design: Experimental laboratory design.

Objectives: To measure the strain at the proximal origin of the extensor carpi radialis brevis (ECRB), and to determine the influence of a forearm support band.

Background: A forearm support band is often used with the intent to decrease stresses around the origin of the wrist extensors.