Name:
10.3171/2025.4.FOCVID2521
Description:
10.3171/2025.4.FOCVID2521
Thumbnail URL:
https://cadmoremediastorage.blob.core.windows.net/e0356ccf-f87b-43c5-ac8a-27e4d95f88af/videoscrubberimages/Scrubber_389.jpg
Duration:
T00H09M22S
Embed URL:
https://stream.cadmore.media/player/e0356ccf-f87b-43c5-ac8a-27e4d95f88af
Content URL:
https://cadmoreoriginalmedia.blob.core.windows.net/e0356ccf-f87b-43c5-ac8a-27e4d95f88af/2. 25-21.mp4?sv=2019-02-02&sr=c&sig=%2FAkfmUilDKmK4faeuXypPsgV0Geq8zV17C5SqH9aWbw%3D&st=2026-01-24T07%3A35%3A49Z&se=2026-01-24T09%3A40%3A49Z&sp=r
Upload Date:
2025-05-20T00:00:00.0000000
Transcript:
Language: EN.
Segment:0 .
[MUSIC PLAYING]
SPEAKER: Robotic assisted anterior lumbar interbody fusion with the use of indocyanine green and posterior spinal fusion. Anterior lumbar interbody fusion is a well-established surgical intervention for addressing a spectrum of degenerative pathologies affecting the lumbar spine, including degenerative disk disease, disk herniation, radiculopathy, and spondylolisthesis. Traditionally, ALIF has been performed using open surgical approaches, which, while effective, is associated with significant morbidity, including increased blood loss and potential injury to surrounding structures.
SPEAKER: Similarly, there has been an exponential growth in the interest in the use of robotics for posterior spinal procedures, including the placement of lumbosacral pedicle screws. There is increasing evidence that robotic-assisted placement of pedicle screws is associated with increased accuracy compared to other modalities, such as freehand, fluoroscopy-guided, or even navigation systems. Recent advancements in robotic surgical systems have facilitated a paradigm shift in spinal procedures.
SPEAKER: The integration of robotic technology into anterior spinal fusions allows for enhanced precision in accessing the retroperitoneal space, while minimizing intraoperative blood loss and mitigating iatrogenic damage to adjacent tissues. This minimally invasive approach has demonstrated potential benefits in reducing perioperative complications, expediting post-operative recovery, and improving overall patient outcomes.
SPEAKER: Studies are warranted to elucidate the long-term advantages of robotic-assisted ALIF in comparison to conventional techniques. A 50-year-old male presented with symptoms of back and radiating leg pain that were refractory to conservative management, including physical therapy, neuropathic pain modulators, NSAIDs, and acetaminophen. Imaging was significant for a grade 1 spondylolisthesis at L5–S1.
SPEAKER: Diagnostic workup included a lumbar MRI, x-ray, and SPECT-CT, which showed greatest uptake in the L5–S1 region. Due to the findings of the spondylolisthesis at L5–S1 and the uptake around the disk space, the patient underwent bilateral transforaminal injection of lidocaine and dexamethasone at L5–S1. This injection provided temporary relief of the patient's symptoms.
SPEAKER: Patient was scheduled for a robotic-assisted anterior lumbar interbody fusion with posterior spinal fusion at L5–S1 level. The robotic-assisted approach was selected to reduce visceral manipulation, tissue damage, and risk for abdominal hernias. Written informed consent was obtained from the patient for the robotic procedure, as well as for the collection and sharing of his medical data in procedural videos for research and publication purposes.
SPEAKER: All identifying information was anonymized to maintain confidentiality. Following induction of general anesthesia and the administration of perioperative antibiotics and tranexamic acid, the patient underwent endotracheal intubation. An indwelling Foley catheter was placed. Neuromonitoring leads were placed for intraoperative nerve monitoring.
SPEAKER: The patient was positioned on a Trumpf surgical bed in the supine position, with arms in the "Superman" position, as demonstrated in the photo. Anterior access to the retroperitoneal space was gained using the da Vinci robotic system. Five incisions were made for port placement, a 5-millimeter left upper quadrant incision for the optical trocar using a 0° 5-millimeter scope, two 8-millimeter robotic ports placed in the left and right lower quadrants, two additional 8-millimeter robotic ports in the left and right midabdomen for instrument arms, and an 8-millimeter suprapubic port for manual access and future placement of a GelPort.
SPEAKER: After docking the da Vinci arms, the patient was placed in a Trendelenburg position at 27° to gain anterior access to the lumbar spine. This Trendelenburg position allowed for the disk space to be perpendicular to the floor, allowing for shorter working distance and improved surgical ergonomics compared to the traditional approach. Pneumoperitoneum was developed to 15 mm Hg. The abdominal contents were displaced superiorly or laterally, providing a clear operative field.
SPEAKER: Upon retraction of the peritoneal sac and retroperitoneal structures, the posterior abdominal wall was exposed, revealing the bifurcation of the abdominal aorta into the common iliac arteries crossing the L5–S1 intervertebral disk space. Ureters were visualized laterally and protected throughout the procedure, and the presacral nerves were mobilized. Indocyanine green is used as a near-infrared fluorescent dye to visualize blood flow in real time.
SPEAKER: After intravenous injection, ICG binds to plasma proteins, then circulates through the vasculature. When exposed to near-infrared light, it emits fluorescence, allowing for clear delineation of arteries and vascular structures. ICG fluorescence imaging was performed intraoperatively to visualize the bifurcation of the common iliac arteries, as well as the middle sacral artery, to reduce risk of vascular injury.
SPEAKER: The middle sacral artery was ligated with a 2-0 silk and transected to prevent excessive bleeding. The anterior longitudinal ligament was then revealed via dissection of retroperitoneal fat and incised to access the disk space. After visualization of the intervertebral disk space, a 3-centimeter silk suture was used as a measuring guide to determine the width of the disk space for optimal selection of the interbody spacer and cage.
SPEAKER: A 25-gauge needle was placed in the L5–S1 disk space to confirm placement, and then the area was marked with cautery. The patient was moved out of Trendelenburg position to supine. The suprapubic port was exchanged for a GelPOINT Mini to facilitate instrument exchange, while maintaining pneumoperitoneum during the disk excision. A discectomy was performed using a sheathed scalpel, and disk material was removed using a pituitary rongeur.
SPEAKER: A Cobb retractor was utilized to further clear the bony endplate and prepare the disk space for interbody cage placement in usual fashion. Following preparation of the disk space, an expandable trial was placed to further open the disk space and to assess initial fit. After confirming appropriate sizing, the spacer was placed with the Hedron IA metal interbody cage prepacked with osteogenic bone graft.
SPEAKER: Using a modified inserter, two shims were malleted into L5. This modified inserter is enclosed, allowing for safer placement of the shims. Intraoperative lateral and AP x-ray imaging confirmed proper placement of the interbody cage. After shim placement, locking mechanism was engaged. During neuromonitoring, a transient loss of right lower extremity motor signals was noted, but resolved intraoperatively with no evidence of malpositioning.
SPEAKER: Hemostasis was ensured with Floseal application and the robotic system was detached. A general surgeon performed superficial and dermal closure without deep layer approximation. A staged posterior fixation was performed 4 days after the ALIF procedure to ensure adequate indirect decompression using the ExcelsiusGPS robotic system to enhance stability, prevent cage subsidence, and promote fusion.
SPEAKER: Percutaneous screws were placed bilaterally followed by two rods. The L5–S1 joint was exposed and decorticated. Both autograft and allograft were placed to constitute a supplemental posterolateral fusion. Placement of screws was accurate in postoperative CT. The patient experienced no significant complications, with full restoration of motor function upon awakening.
SPEAKER: Estimated blood loss was minimal on both surgeries, and the total operative time for the ALIF was 4 hours. The patient felt that his preoperative preoperative back and leg pain had improved, so no formal decompression was deemed necessary. Postoperative imaging confirmed midsagittal cage placement with adequate angulation. The patient was advanced to a regular diet and was discharged on postoperative pedicle screw placement day 2, with standard follow-up scheduled.
SPEAKER: Although the operative time for the robotic ALIF is longer than the open approach, the novelty of the technique requires practice and familiarization to reduce operative time. Robotic ALIF may be the safest approach for several patients, including severely obese patients and those with extensive abdominal surgery. Further exploration into the clinical uses of the da Vinci robot will reduce OR time, making surgery more accessible and improve outcomes for patients.
SPEAKER: