Fig. (1) Forty-two year-old patient affected by a malunion of the proximal phalanx of the third finger of the right hand. A volar angulation associated with rotation deformity were present (A, B, C). A corrective in situ osteotomy of the phalanx fixed with plate and screws was performed, using a lateral approach (D). At the postoperative clinical and radiographic examinations, the deformity is corrected well, with a perfect alignment of the third finger (E, F, G).