Complex calcaneal defects represent a reconstructive challenge since calcaneous plays a key role in standing and gait. We report the case of a 35-year-old patient with a complex calcaneal defect due to chronic osteomyelitis after a high energy Gustillo type IIIB calcaneal fracture that was reconstructed with a free fibula–flexor hallucis longus osteomuscular flap. The fibula was osteotomized into two segments, which were used to reconstruct the bone defect, and the muscular component of the flap was used for coverage of the reconstructed calcaneal skeleton. Fifteen days later permanent skin coverage was ensured with a local random pattern rhomboid skin flap. Early and late postoperative periods were uneventful. Bone maturation was radiographically evident at a follow up of 12 weeks, and complete bone incorporation at 3 years. Full weight bearing was possible at 6 months postop. Final follow up, at 3 years postop, verified a very good functional and aesthetic outcome. © 2012 Wiley Periodicals, Inc. Microsurgery, 2013.