Spine

Complex spinal surgery is not defined by a single universally accepted criterion. In general, the term refers to spinal operations that may involve multiple vertebral levels, substantial technical difficulty, a high surgical risk, or anatomy in which normal tissue planes are distorted or absent. These procedures often require advanced surgical judgment, careful preparation, and coordinated perioperative care because even small technical errors may lead to serious neurological, vascular, or mechanical complications.

Examples include severe rigid spinal deformities requiring three-dimensional osteotomies (Figure 1); primary malignant spinal tumours that require total en bloc excision (Figure 2); revision operations in patients who have previously undergone spinal procedures; and operations in anatomically difficult regions, such as the anterior craniocervical junction or the anterior sacral area. Complex surgery may also be required for severe spinal infection involving multiple levels with extensive bony destruction, or for uncommon syndromic conditions such as neurofibromatosis, Marfan syndrome with dural ectasia, and disappearing bone disease.

Although these conditions are different, complex spinal operations share several important features. They are relatively uncommon and are usually performed only in specialised centres or by surgeons with substantial experience in advanced spinal reconstruction. The operations are often long and may be associated with significant blood loss. They can also cause major physiological stress, making postoperative care and recovery more demanding. As a result, the risks of complications, prolonged hospital stay, neurological deterioration, infection, implant-related problems, and even mortality, are higher than those of routine spinal procedures.

Because of these risks, complication reduction begins long before the day of surgery. Careful preoperative planning is essential. Surgeons must review radiographs, computed tomography scans, magnetic resonance imaging, and, when necessary, vascular or other specialised imaging in order to understand the patient’s anatomy in detail. The goals of surgery should be clearly defined, including the amount of correction required, the level of fusion, the method of fixation, and the strategy for protecting neural structures. In selected cases, three-dimensional printed models or computer-assisted planning may help the surgical team visualise complex anatomy and rehearse key operative steps.

A multidisciplinary approach is also crucial. Complex spinal surgery often requires collaboration among spine surgeons (orthopaedic and neurosurgical), anaesthesiologists, radiologists, neurologists, intensive care specialists, rehabilitation physicians, nurses, physiotherapists, and other allied health professionals. Preoperative case discussion allows the team to anticipate potential difficulties, optimise the patient’s medical condition, arrange blood management strategies, and plan postoperative monitoring. Experienced anaesthetic support is particularly important because these operations may involve major blood loss, prolonged positioning, and significant changes in haemodynamics.

Modern technology can further improve safety when used appropriately. Intraoperative neuromonitoring may provide warning signs of potential injury to the spinal cord or nerve roots. Navigation systems and robotic assistance can improve the accuracy of screw placement and help surgeons work in distorted anatomy with high confidence. However, these technologies should be regarded as supportive tools rather than substitutes for sound clinical judgment, anatomical knowledge, and surgical experience.

Equally important is communication with the patient and family. The surgeon should explain the nature of the disease, expected benefits of surgery, possible complications, and realistic limitations of correction or recovery. In many patients, especially those who are frail or medically complex, prehabilitation can improve physical readiness before surgery. After the operation, meticulous wound care, pain control, early mobilisation, nutritional support, neurological observation, and structured rehabilitation are essential for achieving the best possible outcome. Therefore, while advanced techniques and technology have an important role in complex spinal surgery, the foundation of safe treatment remains careful planning, teamwork, honest communication, and comprehensive perioperative care.