Comparison of the effect of two application methods of self-adherent wrap (Coban™) on range of motion in the hands of healthy subjects
Introduction Coban™ (3M, Berkshire, UK) is a self-adherent dressing frequently used to control oedema in hands. There is a paucity of evidence investigating the effect of different application techniques of Coban™ on range of motion (ROM) of the hand. Method A within-subject design was used to evaluate the effect of two methods of application of Coban™ on the hand ROM of 25 participants. Each participant was tested at baseline, during the two methods of application and after removal of Coban™. Assessments were taken of finger flexion using a goniometer and of thumb ROM using the Kapandji's scale. Results The application of Coban™ reduced active range of joint flexion within the digits. There was also statistically significant difference active joint range of flexion between cylindrical and spiral Coban™ applications at the index finger proximal interphalangeal (PIP) joint (5.2°, P = 0.033), and the middle finger PIP (3.8°, P = 0.003) and distal interphalangeal joints (3.6°, P = 0.018). Discussion The study findings suggest that both cylindrical and spiral Coban™ application to the interphalangeal joint of the thumb and the index and middle fingers reduce range of finger flexion. The cylindrical application limits to a lesser degree than a spiral application. Although the differences were statistically significant, the extent of change may not be of clinical importance.