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Background The treatment of chronic calcaneal osteomyelitis remains a challenge for orthopedic and plastic surgeons. The basis of surgical therapy includes thorough debridement of infected tissue and reconstruction with well-vascularized flaps. Methods A “hybrid” sural flap composed of an adiponeurofascial flap proximally and a neurofasciocutaneous flap distally is described here. The adiponeurofascial flap was used to obliterate the bone cavity, and the distal part was used to resurface soft tissue defects. Five patients with chronic calcaneal osteomyelitis were treated with this modified sural flap. Results The size of the adiponeurofascial flap ranged from 5.0 × 4.0 cm to 13.0 × 5.0 cm, and that of the neurofasciocutaneous flap ranged from 6.5 × 3.0 cm to 6.0 × 8.0 cm. The donor defects were covered with skin grafts in three patients and closed primarily in two patients. All the flaps survived completely without any complications, the skin graft and the skin over the adiponeurofascial flap healed uneventfully. There was no evidence of recurrent infection during the follow-up period. Conclusion The modified “hybrid” sural flap is simple and reliable and is a good candidate for treatment of chronic calcaneal osteomyelitis.

With the Drucker-Prager yield criterion, the ANSYS software is used to analyze the long-short-pile composite foundation by using three-dimensional nonlinear finite element method. The influences of load on axial stress and maximal axial stress of head of pile with cushion or not have been investigated by simulating composite foundation through nine long piles and sixteen short piles. The result indicates the cushion can reduce the stress concentration in head of pile effectively with increase of load. This conclusion has a certain value for engineering.

Reconstruction of flexor function of forearm remains a challenge in the reconstructive surgery. With development of microsurgical techniques, reconstructive surgeons have been able to envision muscle transplantation for restoration of function and not simply for provision of soft tissue coverage. In this report, we present our experience in three patients of successful treatment of traumatic flexor loss in the forearm with the microsurgical medial gastrocnemius myocutaneous flap. At 18- to 24-months follow-up, the detected action potential (Latency and Amplity) in the transferred muscle was significantly improved in the EMG examination. The strength of the digital flexion reached to III degree in one case, IV degree in two cases. No complications were noted in the donor legs. We conclude that the microsurgical medial gastrocnemius myocutaneous flap transfer can be an ideal alternative for functional reconstruction of the forearm flexor muscle in three posttrauma patients.