The spine is composed of vertebrae and intervertebral discs. As the axial skeleton of the human body, it supports body weight, protects the spinal cord and internal organs, and enables trunk movements. A normal spine exhibits four physiological curvatures when viewed laterally: cervical lordosis, thoracic kyphosis, lumbar lordosis, and sacral kyphosis. Orthopaedic spinal implants are mainly used in the treatment of spinal disorders such as degenerative spinal diseases, fractures, deformities, infections, and tumors.
Spinal implants mainly include spinal fixation systems and intervertebral fusion cages.
Spinal Fixation System:Consisting of bone plates, fixation rods, screws, etc., used individually or in combination, including anterior cervical plate systems, posterior cervical systems, thoracolumbar posterior systems, and posterior spinal internal fixation system.
Intervertebral Fusion Cage:Generally classified into threaded and non-threaded types. The mainstream designs at present are non-threaded wedge-shaped, trapezoidal, and fusiform cages. The main reason is that threaded intervertebral fusion cages are highly prone to subsidence after implantation, whereas non-threaded cages better overcome this drawback and provide greater segmental stiffness. In terms of materials, titanium alloy or polymeric polyetheretherketone (PEEK) are the mainstream choices.
Spinal products have relatively high technical barriers, and miniaturization represents an important development trend.
In clinical practice, spinal products are applied under highly complex conditions. Their design must ensure high mechanical performance and sufficient safety margins to prevent product failure during or after surgery, which could cause harm to patients. Therefore, spinal products feature high technical barriers and high surgical risks.
In addition, according to different implantation sites and purposes, orthopaedic implantable medical devices are mainly classified into trauma implants, spinal implants, joint implants and other categories. With the continuous development and advancement of orthopaedic technology, the subdivided categories and application scope of orthopaedic implants are also constantly expanding.
Trauma implants include products such as orthopedic locking plates, intramedullary nails, and bone screws.
Joint implants include products such as hip prosthesis and knee prosthesis.
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Post time: Mar-31-2026