Single-position spine surgery: what the 55-case study explored

Some surgical innovations concern a new implant. Others involve how the steps of an operation fit together. Single-position lumbar fusion belongs to that second conversation: it asks whether parts of a procedure can be completed while a patient remains in one position, rather than changing position between stages.

For patients, the phrase can sound as though it promises a simpler operation or a shorter recovery. Those possibilities need to be evaluated separately. A technique’s name tells us about an approach, not everything that follows from it. Dr. Kade Huntsman’s published 55-case series provides a concrete example of how to examine that distinction and understand the question a surgical study actually explored.

What “single-position” means here

The study concerned lateral lumbar interbody fusion with robot-guided posterior screw placement while the patient remained in the lateral position. In ordinary language, the team performed those parts of the procedure with the patient on their side, avoiding a repositioning step between them. The approach was described as single-position lateral lumbar interbody fusion. Read the published study.

The terminology is specific. “Single-position” does not automatically mean one incision, one spinal level, or a procedure appropriate for everyone. A patient reading the phrase should ask which parts of the proposed operation it describes and what other steps would still be necessary.

It also helps to distinguish the route used to reach the spine from the technology used to assist a task. Positioning, surgical access, imaging, and robotic guidance are different features of an operation. They may be combined in a particular plan, but knowing one of them does not tell you all the others.

What the researchers reported

Huntsman and colleagues reviewed 55 cases retrospectively at one institution. Of 342 screws, 328 were placed with robotic guidance; seven required repositioning. The authors reported 98% successful placement and no revision for screw malposition. The other 14 screws were placed manually at the surgeon’s discretion. The study appeared online in 2019 and in the Journal of Robotic Surgery in 2020. Study abstract and publication details.

The technical result supports a focused discussion of this team’s experience with the approach. It does not by itself establish that patients recovered faster than they would have after another operation. Nor does it establish that the method is preferable for every anatomy, diagnosis, or planned fusion.

The study disclosed relationships with industry, including manufacturer-employed coauthors. As with other device research, readers should consider those disclosures together with the design and measurements. The source remains useful when its findings are reported within their actual scope.

Why the workflow question is interesting

There is a reasonable research question behind reducing the number of transitions during an operation. If steps can be completed without changing position, what does that change about the overall process? Does it alter the time needed, the tasks required of the team, or the way imaging and instruments are used?

Those are questions to investigate, rather than conclusions to assume. A workflow can become different without every outcome improving. A change that makes one step more convenient could have tradeoffs elsewhere. Evaluating the whole procedure requires looking beyond the feature that gives the technique its name.

For a patient, the useful question is therefore, “What practical difference would this approach make in my case?” The answer should connect the technique to the planned procedure. It should also identify which expected benefits are supported by comparative evidence and which reflect the clinician’s judgment or experience.

A technical study is one part of the picture

When a report emphasizes implant placement, it is addressing a technical component of care. Patients usually also want to know about pain, function, complications, and recovery. These outcomes may require different measurements and follow-up periods. A single percentage should not be expected to answer all of those questions.

Consider a hypothetical study that successfully completes a new surgical workflow in a group of patients. That tells readers the workflow was achieved in those cases. To determine whether it improves walking ability compared with another approach, researchers would need information about walking ability and a meaningful comparison. Completion of the workflow cannot stand in for an outcome that was not measured.

This distinction is useful beyond spine surgery. Whenever a new technique is described as “successful,” ask what success meant in that report. Was it completing the planned steps, meeting an imaging criterion, improving a symptom score, or avoiding another procedure? Clear definitions help prevent a technical achievement from becoming an unsupported promise.

What a comparison would need to address

A patient interested in whether single-position surgery is better than another approach should look for research designed to compare the approaches. Important questions include whether the groups had similar conditions, similar procedures, and similar follow-up. Differences between the groups can complicate interpretation even when the headline numbers look straightforward.

For example, a hypothetical comparison between a simpler operation in one group and a more extensive operation in another would not isolate the effect of positioning. A faster average procedure might reflect the difference in complexity rather than the position itself. That is why the details of who was studied matter alongside the result.

The 55-case report has no comparison group. It is best used as evidence of a defined technical experience, with further questions directed toward comparative research. Recognizing that limit makes the article more useful, because it prevents it from being asked to answer a question its design cannot resolve.

Connect the approach to your recovery questions

The AAOS overview of minimally invasive spine surgery explains the use of smaller access routes and specialized instruments while noting that the appropriate approach depends on the condition and patient. “Minimally invasive” describes a surgical approach; it does not eliminate the need to discuss risks and expectations. AAOS guide to minimally invasive spine surgery.

At a consultation, ask the team to explain recovery in terms of your actual plan. What activities will need discussion? How will progress be assessed? When should work demands be addressed? Request guidance appropriate to your procedure rather than assuming that a label provides a reliable calendar.

If you have read about someone else’s rapid recovery, bring it up as a question. Ask whether that person’s operation and situation resemble yours and what differences might matter. A personal story can help you express your hopes, but it should not become the only basis for expectations.

A drawing can be useful here. Ask the surgeon to mark which spinal levels are involved and describe the planned sequence without relying on abbreviations. Then ask which part of that sequence the single-position approach changes. You do not need to memorize the instruments or technical steps. The purpose is to connect the research term to a plan you understand, so that a familiar phrase on a website does not stand in for an individualized explanation.

Prepare a useful decision checklist

Before choosing an approach, try to leave the consultation able to explain four things: the reason for the operation, the proposed steps, the alternatives discussed, and the main uncertainties. If the term “single-position” appears in the recommendation, place it within that explanation instead of letting it replace the explanation.

Ask what evidence most closely matches your diagnosis and planned procedure. Ask whether the recommendation would change if robotic assistance were unavailable. Ask which goals are realistic to discuss and what information the team still needs. These questions help identify the role of the technique without requiring you to evaluate every technical detail independently.

Dr. Huntsman’s study contributes a documented account of one approach to surgical workflow. Its value lies in that specificity. Patients can use it to learn what was studied, understand what remains unproven by that report, and have a more informed discussion about whether the approach belongs in their own care plan.

Sources

1. Huntsman KT, Ahrendtsen LA, Riggleman JR, Ledonio CG. Navigated robot-guided pedicle screws placed successfully in single-position lateral lumbar interbody fusion. Journal of Robotic Surgery. 2020;14:643–647. Published online October 17, 2019. DOI: 10.1007/s11701-019-01034-w. Full text and disclosures.
2. American Academy of Orthopaedic Surgeons. Minimally Invasive Spine Surgery. Patient education on surgical approaches.

Educational information; suitability and recovery expectations require an individual evaluation. Sources checked September 25, 2026.