Two-stage reconstruction of post-traumatic segmental tibia bone loss with nailing

Managing segmental bone loss in the tibia remains a clinical challenge. Traditional methods often rely on external fixation during bone regeneration, which can lead to prolonged immobilization and complications. Prior research has shown that external fixators may delay recovery and increase the risk of secondary fractures. The Masquelet technique, involving an acrylic spacer and later bone grafting, has been proposed as an alternative. However, this method still requires extended use of external fixation. That uncertainty drove the development of alternative stabilization techniques. No prior work had resolved the issue of mechanical stability during the bone healing phase. The need for faster recovery and reduced complications motivated further investigation. This gap motivated the adaptation of intramedullary nailing in the first stage of the Masquelet approach. The goal was to improve functional outcomes while maintaining structural integrity.

The study aimed to evaluate a modified two-stage technique for tibial bone loss. The modification involved using an intramedullary-locking nail in the first stage instead of an external fixator. This change was intended to reduce mechanical complications and allow earlier weight-bearing. The researchers proposed that intramedullary nailing could improve patient outcomes by avoiding prolonged immobilization. The primary objective was to assess the effectiveness of this modified approach. The study focused on patients with segmental tibial bone loss exceeding 6 cm. The researchers wanted to determine if the nail could provide sufficient stability for bone regeneration. They also aimed to evaluate the incidence of septic complications and overall healing success.

The modified technique involved placing an intramedullary-locking nail during the first stage of surgery. This replaced the traditional external fixator used in the Masquelet method. The nail was left in place during the bone healing phase. A second stage followed, where the nail was removed and the bone defect was filled with cancellous bone. The study included 12 patients with tibial bone loss greater than 6 cm. The first stage was performed within the first two weeks of injury or diagnosis. Flap coverage was required in 10 cases using a free muscle flap and in 2 cases using a pediculated fasciocutaneous flap. The follow-up period ranged from 12 to 94 months, with an average of 39.5 months.

Complete weight-bearing was achieved at a mean of 4 months after the second stage. Eleven out of twelve patients showed complete healing with no pain during weight-bearing. Five septic complications occurred after the second stage in four of these patients. One case resulted in reconstruction failure due to infection. In four other cases, the infections were successfully managed with nail replacement or prolonged antibiotic therapy. No graft loss was reported in these patients. The use of intramedullary nailing allowed for faster recovery and reduced the risk of secondary fractures. The researchers propose that this technique improves functional outcomes compared to traditional external fixation.

The modified technique using an intramedullary nail in the first stage appears to improve outcomes in tibial bone loss. The nail provides mechanical stability while allowing earlier weight-bearing. The researchers propose that this approach reduces the disadvantages of external fixation. However, the risk of sepsis remains high but can be managed effectively in most cases. Four out of five patients with septic complications achieved successful healing. The study suggests that this technique can be a viable alternative to traditional methods. The authors state that the nail facilitates the Masquelet technique by improving functional recovery. The results support the use of this modified approach for tibial bone reconstruction.