Ideal position for thumb interphalangeal arthrodesis in the era of smartphones and text communication.

The hypothesis of this study was that arthrodesis of the thumb interphalangeal joint at a degree of flexion greater than the recommended 0° to 15° in the era of widespread use of handheld devices would potentially be more beneficial for the use of these devices. For patients who rely heavily on a smart-phone or handheld device and require dominant thumb arthrodesis, thumb interphalangeal arthrodesis at an angle of 10° or 30° will neither improve nor impede their use of the device.