Postoperative functional training program for vascularised Iliac flap donor site in jaw defect reconstruction based on the Delphi method.

Vascularised iliac flaps (VIFs) are widely used for the reconstruction of jawbone defects; however, postoperative donor-site complications, such as gait disturbances, with an incidence of 13.9-50%, significantly impede patient recovery. Despite this, evidence-based rehabilitation protocols specific to VIFs remain lacking. Existing rehabilitation guidelines for hip surgeries are unsuitable owing to differences in surgical mechanisms. This study employed the Delphi method, engaging 20 multidisciplinary experts (oral and maxillofacial surgery: 5; orthopaedics: 7; rehabilitation: 6; nursing: 2). Through three rounds of anonymous consultations, and by integrating literature evidence with postoperative mobility assessments, we developed a phased, individualised progressive functional training (PFT) protocol featuring dynamic evaluation, coordinated activation of abdominal and hip muscle groups, and safe exercise strategies during head and neck immobilisation, while overcoming conventional hip rehabilitation limitations (e.g., restrictions on flexion < 90°, and bans on squatting or cross-legged sitting). PFT is structured into six progressive phases, with exercise intensity tailored to assessment outcomes. A single-centre randomised controlled trial (n = 62) demonstrated that PFT significantly accelerated lower limb functional recovery, improved hip mobility and balance, reduced donor-site pain, and enhanced quality of life (University of Washington Quality of Life questionnaire: F (1,60) = 17.262, P < 0.001), without increasing the risk of flap vascular compromise or iliac hematoma. The limitations of the study include the single-centre design and lack of cross-cultural validation. Future multicentre studies are required to enhance adaptability. This study establishes a foundational yet effective framework for post-VIF rehabilitation, guiding clinical practice and research advancements.