Evidence map›Paper›PMID 37115323›Full record

ArticleActa neurochirurgica2023

Biportal endoscopic extraforaminal lumbar interbody fusion using a 3D-printed porous titanium cage with large footprints: technical note and preliminary results.

Ki-Han You, Jae-Yeun Hwang, Seok-Ho Hong, Min-Seok Kang, Sang-Min Park, Hyun-Jin Park

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Article in Acta neurochirurgica, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Direct endoscopic visualization improves endplate preparation in lumbar interbody fusion: a comparative study of biportal endoscopic and conventional techniques.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
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  4. Learning curve for biportal endoscopic transforaminal lumbar interbody fusion and 90-day postoperative complications during the learning phase: a multicenter retrospective cohort study.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2025
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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Ki-Han YouDepartment of Orthopedic Surgery, Spine Center, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, 1, Singil-ro, Yeongdeungpo-gu, Seoul, 07441, Republic of Korea.
Jae-Yeun HwangDepartment of Orthopedic Surgery, Spine Center, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, 1, Singil-ro, Yeongdeungpo-gu, Seoul, 07441, Republic of Korea.
Seok-Ho HongDepartment of Orthopedic Surgery, Spine Center, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, 1, Singil-ro, Yeongdeungpo-gu, Seoul, 07441, Republic of Korea.
Min-Seok KangDepartment of Orthopedic Surgery, Korea University College of Medicine, Anam Hospital, Seoul, Republic of Korea.
Sang-Min ParkDepartment of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seoul, Republic of Korea.
Hyun-Jin ParkDepartment of Orthopedic Surgery, Spine Center, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, 1, Singil-ro, Yeongdeungpo-gu, Seoul, 07441, Republic of Korea. phjfrog@gmail.com.ORCID 0000-0002-8075-2813

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study was to introduce biportal endoscopic extraforaminal lumbar interbody fusion (BE-EFLIF), which involves insertion of a cage through a more lateral side as compared to the conventional corridor of transforaminal lumbar interbody fusion. We described the advantages and surgical steps of 3D-printed porous titanium cage with large footprints insertion through multi-portal approach, and preliminary results of this technique.

methodsThis retrospective study included 12 consecutive patients who underwent BE-EFLIF for symptomatic single-level lumbar degenerative disease. Clinical outcomes, including a visual analog scale (VAS) for back and leg pain and the Oswestry disability index (ODI), were collected at preoperative months 1 and 3, and 6 months postoperatively. In addition, perioperative data and radiographic parameters were analyzed.

resultsThe mean patient age, follow-up period, operation time, and volume of surgical drainage were 68.3 ± 8.4 years, 7.6 ± 2.8 months, 188.3 ± 42.4 min, 92.5 ± 49.6 mL, respectively. There were no transfusion cases. All patients showed significant improvement in VAS and ODI postoperatively, and these were maintained for 6 months after surgery (P < 0.001). The anterior and posterior disc heights significantly increased after surgery (P < 0.001), and the cage was ideally positioned in all patients. There were no incidences of early cage subsidence or other complications.

conclusionsBE-EFLIF using a 3D-printed porous titanium cage with large footprints is a feasible option for minimally invasive lumbar interbody fusion. This technique is expected to reduce the risk of cage subsidence and improve the fusion rate.

Indexed as

Spinal FusionTitaniumAgedHumansLumbar VertebraeMiddle AgedMinimally Invasive Surgical ProceduresPorosityPrinting, Three-DimensionalRetrospective StudiesTreatment OutcomeTitaniumBiportal endoscopic spinal surgeryExtraforaminal lumbar interbody fusionLarge footprints cageLumbar degenerative diseaseThree-dimensional printed porous titanium cage

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.