Reliability of a pedal goniometer for the assessment of ankle inversion in the plantarflexed position: Winner of the 1990 Beiersdorf Sports Physiotherapy Award.

A pedal goniometer was designed to measure the range of inversion of the ankle joint in 42 degrees of plantarflexion about an axis aligning more closely to that of the subtalar joint. The reliability of this instrument in assessing ankle inversion was examined. Repeated measurements of the full active range of movement of ankle inversion were made on 30 subjects. The values of the Pearson Correlation Coefficient for intra-tester and inter-tester reliability were r=0.96 and r=0.91 respectively. The high reliability demonstrated by this pedal goniometer will allow its use in areas such as assessment of joint position sense and evaluation of the effects of treatment modalities in rehabilitation.