Posterolateral bone grafting for nonunion of the tibia

Area of Science:

• Orthopedic surgery
• Bone regeneration
• Trauma surgery

Background:

• Tibial diaphyseal nonunions present significant challenges in orthopedic surgery.
• Complex cases often involve severe soft tissue damage, segmental bone loss, or deep infection.
• Effective bone grafting techniques are crucial for achieving union and restoring limb function.

Purpose of the Study:

• To evaluate the efficacy of posterolateral bone grafting for tibial nonunions.
• To compare the outcomes of different bone graft materials and techniques.
• To assess healing times and success rates in a cohort of patients over an 18-year period.

Main Methods:

• Retrospective analysis of 62 tibial nonunion cases treated between 1969 and 1987.
• Application of posterolateral bone grafts, utilizing whole iliac bone, nonvascularized fibular grafts, or iliac cancellous bone chips.
• Inclusion of cancellous allografts in cases with major bone defects.
• Assessment of primary healing rates and healing times.

Main Results:

• Primary healing was achieved in 92% of the treated tibial nonunions.
• Posterolateral grafting with cortico-cancellous bone chips resulted in significantly shorter healing times.
• Nonvascularized fibular grafts and massive corticocancellous bone blocks showed longer healing durations.
• Successful union was achieved despite complications like deep infection and extensive bone loss in many patients.

Conclusions:

• Posterolateral bone grafting is a highly effective treatment for tibial diaphyseal nonunions.
• The use of autogenous cortico-cancellous bone chips offers advantages in terms of reduced healing time.
• This technique provides a viable solution for complex nonunions, including those with significant bone defects and infection.