Digital Mucous Cysts (DMCs) arise from the distal inter-phalangeal joints of the digits. They often rupture spontaneously and nail deformities are common. Although surgical excision is recognised as the most successful treatment, there is no clear consensus as to the most appropriate operative technique.

We performed a retrospective review identifying all patients who underwent excision of a DMC using a local rotation skin flap by the senior author over a ten-year period. Patients were all seen pre-operatively and at a minimum of six months post-operatively. Sixty-nine patients were included in the study and were reviewed at an average of 37.7 months post-operatively. No patients were lost to follow-up. There was only one cyst recurrence (1.4%). Sixty-seven (97.1%) patients were happy with the scar and sixty-three patients (91.3%) said they would have the procedure performed again. Sixty-six patients (95.7%) were content with their post-operative range of movement, which was on average 8.1° less than pre-operative values. Thirty-six patients had a nail deformity pre-operatively and twenty-one reported that the deformity grew out following the procedure. Only one patient (3.0%) developed a new deformity post-operatively. Five patients reported infection post-operatively with four prescribed oral antibiotics, but all resolved following one week of treatment.

This study, which is one of the largest analyses of an operative treatment for DMCs, demonstrates that cyst excision with a local rotation skin flap is a safe and effective technique with a low recurrence rate and a high patient satisfaction.