1. Background and Clinical Challenges in Elderly Osteoporotic Patients
According to the China Osteoporosis Epidemiological Survey, the decline in estrogen levels after menopause in women accelerates bone loss, with the prevalence of osteoporosis reaching approximately 60–70% in women aged over 80 years. Among orthopedic conditions caused by osteoporosis, vertebral compression fractures are the most common. Percutaneous kyphoplasty (PKP), as the preferred minimally invasive treatment for vertebral compression fractures, can rapidly relieve pain and restore vertebral height. In recent years, robotic-assisted percutaneous kyphoplasty in elderly patients with severe osteoporosis has attracted increasing attention due to its potential to enhance surgical precision and safety. However, in very elderly patients with severe osteoporosis, two critical intraoperative challenges—imaging accuracy and precise control of bone cement injection—continue to pose significant demands on clinicians.
The integrated solution of Perlove Medical’s 3D C-arm system combined with an orthopedic surgical robot, implemented at the Second Affiliated Hospital of Nanjing Medical University, has supported the successful performance of PKP procedures in numerous elderly patients. This approach, representative of 3D C-arm–guided orthopedic robotic surgery for osteoporotic vertebral compression fractures, has established a robust “protective barrier” that ensures both safety and efficiency.
2. Pathophysiological Characteristics of Severe Osteoporosis in the Very Elderly
In patients aged over 80 years with extremely low bone mineral density, osteoporosis is not merely a reduction in bone mass but is also accompanied by disruption of the bone microarchitecture, including trabecular thinning and fragmentation, resulting in markedly increased bone fragility. This substantially heightens the complexity of PKP procedures, from preoperative imaging assessment to intraoperative technical execution.
3. Key Intraoperative Pain Points
3.1 Pain Point 1: Image Distortion Complicates Lesion Assessment
During surgical procedures in very elderly patients, conventional two-dimensional C-arm fluoroscopy often suffers from non-uniform imaging and blurred anatomical boundaries due to severe osteoporosis. In osteoporotic regions, the markedly reduced absorption of X-rays frequently results in overexposure, causing the distinction between cortical and cancellous bone within the vertebral body to become indistinct. As a result, critical anatomical details—such as the extent of fracture lines, integrity of the posterior vertebral wall, and the location of nerve roots—cannot be clearly visualized. Any misinterpretation may lead to inaccurate bone cement placement, potentially resulting in cement leakage into the spinal canal, neurological injury, and other serious complications.
3.2 Pain Point 2: Fragile Bone and Loss of Cement Injection Precision
Bone cement injection is the core step in PKP procedures, and in very elderly patients with severe osteoporosis, the margin for error is virtually zero. On one hand, fragile bone cannot withstand repeated instrument penetration, increasing the risk of secondary fractures. On the other hand, the enlarged inter-trabecular spaces in osteoporotic bone make the spread and rate of cement flow unpredictable—insufficient injection may fail to adequately reinforce the vertebral body, resulting in suboptimal pain relief or even subsequent fractures, whereas excessive or misdirected injection may lead to cement leakage into the spinal canal, intervertebral spaces, or blood vessels, causing nerve compression, pulmonary embolism, and other life-threatening complications.
4. Technical Solutions Enabled by Advanced Imaging and Robotics
3D Imaging Provides High-Definition Panoramic Navigation
Compared with conventional two-dimensional imaging systems, Perlove Medical’s 3D C-arm can rapidly acquire a three-dimensional reconstruction of the vertebral body with a single scan, offering surgeons a comprehensive, high-resolution visual field throughout the procedure. This imaging advantage lays a solid foundation for robotic-assisted procedures in elderly patients with complex osteoporotic anatomy.
Orthopedic Surgical Robot: Precision-Enabled Operation
If the 3D C-arm serves as the surgeon’s “high-definition eyes,” the orthopedic surgical robot functions as both the “intelligent brain” and “steady hand.” With sub-millimeter navigation accuracy, it directly addresses the clinical challenges associated with robotic-assisted percutaneous kyphoplasty in elderly patients with severe osteoporosis, enabling one-step minimally invasive operations with minimal tolerance for error.
Surgeons can plan the optimal puncture path at the robot workstation based on the 3D reconstructed images provided by the C-arm. The robotic arm then guides and stabilizes the procedure, allowing for single-attempt puncture and working channel establishment, minimizing damage to fragile bone and reducing the risk of secondary fractures or posterior vertebral wall collapse. During bone cement injection, surgeons can precisely control injection speed and volume by integrating intraoperative imaging and real-time monitoring, achieving effective vertebral reinforcement while remaining strictly within a safe range, thereby avoiding cement leakage.
5. Case Sharing
5.1 Case 1: 87-Year-Old Female
The patient had a history of multiple vertebral compression fractures accompanied by severe osteoporosis, with vertebral anatomy distorted and irregular due to repeated fractures, increasing the demands for puncture accuracy. She also had underlying cardiopulmonary comorbidities, resulting in limited intraoperative tolerance and further raising the technical challenges of the procedure.
5.2 Case 2: 83-Year-Old Female
The patient had a history of lumbar surgery, along with chronic fractures of the thoracic and lumbar vertebrae and ribs, resulting in severe destruction of the vertebral bodies and surrounding anatomical structures and markedly increased bone fragility. During surgery, puncture carried a high risk of secondary fractures, and the spread and distribution of bone cement were difficult to predict accurately. Additionally, the patient had multiple comorbidities, including type 2 diabetes, chronic gastritis, and fatty liver, leading to low overall physiological tolerance and imposing stringent requirements on the precision and efficiency of the surgical procedure.
5.3 Case 3: 85-Year-Old Female
The integrated use of the 3D C-arm and orthopedic surgical robot established a closed-loop system of precise imaging assessment, intelligent path planning, and stable procedural execution. This model of 3D C-arm–guided orthopedic robotic surgery for osteoporotic vertebral compression fractures effectively addresses the challenges of severe osteoporosis in very elderly patients, achieving both enhanced surgical safety and procedural efficacy.
6. Conclusion
In summary, the integration of advanced three-dimensional imaging and robotic-assisted technology represents a significant step forward in the treatment of osteoporotic vertebral compression fractures in very elderly patients. By combining precise preoperative assessment, intelligent path planning, and stable intraoperative execution, this approach effectively overcomes the limitations of conventional techniques associated with severe osteoporosis. As clinical experience continues to accumulate and robotic systems become more widely adopted, robotic-assisted percutaneous kyphoplasty is expected to play an increasingly important role in improving surgical safety, reducing complications, and enhancing postoperative outcomes for the aging population.
