Skin necrosis following DAIR: local status of a 85 year-old-male, experiencing a skin necrosis at 21 days of performance of a left knee arthroplasty (panel A); A DAIR with a medial gastrocnemius flap was performed with satisfactory early results at 14 days (panel B), notice the poor reliability of the skin flap surrounding the anterior tibial tuberosity; and favorable outcome with stable soft tissue coverage at 3 month (panel C).