Find in Library

Objectives: In this study, a new method of standardising hand and finger position in a single file (SSFile) relative to the webcam was proposed to reduce parallax errors and improve accuracy and consistency of measurements of finger range of motion (ROM) performed over teleconsultation. Methods: Seven prefabricated rings (diameters: 0–6 cm) were used to promote joint angle fixation and extension during a simulated teleconsultation. Each finger joint ROM was measured three times by two raters using three methods. With SSFile method and screenshots taken during teleconsultation, finger ROM was measured by using a goniometer and open-source ImageJ software. Reliability of the new method was compared to goniometric measurements taken during in-person consultations. Results: When compared to in-person goniometry and ImageJ software, the intra- and inter-rater correlation (ICC) and Pearson's correlation coefficient of the new method was excellent (inter-rater ICC = 0.983–0.997, intra-rater ICC = 0.927–0.999, r = 0.990–0.993). The Bland-Altman plot showed 93 % of the values between in-person and on-screen goniometry methods lied within ±5° of clinically acceptable error. Conclusion: Results of this study suggest that the new method of standardising hand and finger position in a single file (SSFile) is reliable and consistent for teleconsultation use. Level of evidence: Diagnostic Studies – Investigating a Diagnostic Test (Level II).