Occipitocervical fusion combined with 3-dimensional navigation and 3-dimensional printing technology for the treatment of atlantoaxial dislocation with basilar invagination

Abstract

Introduction: Basilar invagination (BI) is a common deformity in the occipitocervical region. The traditional surgical method of BI is direct transoral decompression followed by posterior decompression and fixation. Posterior-only decompression and fixation have achieved good efficacy in the treatment of BI in recent years, but complications are common due to the operation in the upper cervical vertebra and the medulla oblongata region. Moreover, posterior-only occipitocervical fusion combined with an intraoperative 3-dimensional (3D) navigation system is relatively rare, and reports of this procedure combined with 3D printing technology have not been published. We present a case of BI treated with posterior-only occipitocervical fusion combined with 3D printing technology and 3D navigation system to reduce the risk of surgical complications. Patient Concerns: A 55-year-old patient with a history of neck pain and numbness of the extremities for 6 years developed a walking disorder for 1 year. Diagnoses: Atlantoaxial dislocation with BI. Interventions: The patient underwent posterior-only occipitocervical fusion combined with intraoperative 3D navigation system and 3D printing technology. Outcomes: The patient's walking disorder was resolved and he was able to walk approximately 100 m by himself when he was allowed to get up and move around with the help of a neck brace. At 6 months postoperatively, the patient reported that the numbness of the limbs was reduced, and he could walk >500 m by himself. Conclusion: Occipitocervical fusion is one of the established techniques for the treatment of BI. The biggest advantage of the 2 technologies was that it ensured precise implant placement. The advantages of intraoperative 3D navigation systems are as follows: real-time intraoperative monitoring of the angle and depth of implant placement; the best nailing point can be determined at the time of implantation, rather than according to the operator's previous experience; and the extent of screw insertion is visible to the naked eye, rather than being dependent on the “hand feel” of the surgeon. At the same time, the 3D printing technology can be applied to clarify the relationship between blood vessels and bone around the implant to minimize injury to important structures during implantation.

3D-printed individualized navigation template versus the fluoroscopic guide to defining the femoral tunnel for medial patellofemoral ligament reconstruction: A retrospective study

“…In a case report, the 3D printing technology can be applied to clarify the relationship between blood vessels and bone around the implant to minimize injury to important structures during implantation. [13] Based on our clinical experience, during MPFL reconstruction, the isometric point of the femoral tunnel (Schöttle point) varies due to individual development of the femur, so we verified that the use of 3D-printed individualized navigation template can solve some of the effects of individual differences, and at the same time can reduce the influence of the internal and external rotation of the femur on the positioning of the femoral tunnel during fluoroscopy. This study hypothesized that intraoperative use of the 3D-printed individualized navigation template technique to determine the Schöttle point for MPFL reconstruction compared with the fluoroscopic guidance technique would result in more accurate isometric points and better knee function in the early stages.…”

“…In a case report, the 3D printing technology can be applied to clarify the relationship between blood vessels and bone around the implant to minimize injury to important structures during implantation. [ 13 ]…”

3D‐Printed Screw‐Rod Auxiliary System for Unstable Atlas Fractures: A Retrospective Analysis

“…Yuan et al . 15 used a 3D navigation system and 3D printing technology in a patient diagnosed with atlantoaxial dislocation and basilar invagination. The patient's walking disorder was resolved and he was able to walk approximately 100 m by himself with the help of a neck brace after surgery.…”

Technique, Time Demand, Radiation Exposure, and Outcomes of Skin-anchored Intraoperative 3D Navigation in Minimally Invasive Posterior Cervical Laminoforaminotomy

“…Although numerous studies have reported on ION for lumbar surgery, 1,6,[10][11][12][13][14][15][16][17] the use of ION for cervical spine surgery has largely been limited to the upper cervical spine, particularly for atlanto-occipital and C1-C2 surgery. [18][19][20][21][22] The few reports on ION for the lower cervical spine describe the use of this technology for posterior cervical foraminotomy (PCF) and report good clinical outcomes. [23][24][25] However, all these studies utilize bone-anchored trackers, such as a Mayfield clamp (Integra Life Sciences, Plainsboro, NJ) 23 or a dynamic reference base attached to the spinous process of vertebrae.…”

“…Although numerous studies have reported on ION for lumbar surgery,1,6,10–17 the use of ION for cervical spine surgery has largely been limited to the upper cervical spine, particularly for atlanto-occipital and C1–C2 surgery 18–22. The few reports on ION for the lower cervical spine describe the use of this technology for posterior cervical foraminotomy (PCF) and report good clinical outcomes 23–25.…”