Imaging of current spinal hardware: lumbar spine.

Area of Science:

• Orthopedic Surgery
• Radiology
• Biomedical Engineering

Background:

• Lumbar spine stabilization and fusion procedures are increasingly common.
• A variety of hardware devices are used for spinal fusion and stabilization.
• Radiologists require updated knowledge to interpret postoperative imaging accurately.

Purpose of the Study:

• To review indications, materials, and designs of common lumbar spine hardware.
• To discuss alternatives to current hardware and appropriate imaging modalities.
• To illustrate normal postoperative imaging findings and hardware complications.

Main Methods:

• Literature review of lumbar spine hardware and surgical techniques.
• Analysis of imaging modalities for postoperative evaluation.
• Compilation of examples of normal and abnormal postoperative imaging.

Main Results:

• Common lumbar spine hardware includes intervertebral disk replacements, artificial ligaments, spinous process distraction devices, plate-and-rod systems, and dynamic posterior fusion devices.
• Understanding hardware design and physiologic objectives is crucial for accurate interpretation.
• Various imaging modalities are appropriate for postoperative evaluation, each with specific indications.

Conclusions:

• The use of diverse spinal hardware in lumbar fusion is rising.
• Radiologists must be familiar with hardware designs, normal appearances, and potential complications.
• Enhanced understanding of spinal hardware improves postoperative radiologic evaluation and patient care.