Examination techniqueAbnormal resultPossible pathology
While the patient's hand is in the resting position look for fingers that are flexed or extendedFlexed fingerDisrupted extensor tendon (see Figure 6 right)
Extended fingerDisrupted flexor tendon (see Figure 6 left)
While patient flexes fingers toward the palm, check that tips of fingers point toward the scaphoid (see Figure 7)Fingers extend normally but overlap when flexedFracture with rotational deformity of finger
Check for changes in skin color or ability to sweatPart or all of finger has a different skin color (blanched or hyperemic) or lacks ability to sweatDigital nerve injury
Check capillary refill after applying pressure to distal fingertip or nail bedBlanching lasts more than two secondsMicrovascular compromise
Check two-point discrimination in distal fingertip using blunt calipers or a paper clipPatient cannot distinguish two points at least 5 mm apartNeurologic compromise