Evidence map›Paper›PMID 33834125›Full record

ArticleJournal of spine surgery (Hong Kong)2021

Soft Landing technique as a possible prevention strategy for proximal junctional failure following adult spinal deformity surgery.

Alejandro Cazzulino, Rikesh Gandhi, Thaddeus Woodard, Nissim Ackshota, M Burhan Janjua, Vincent Arlet, Comron Saifi

Abstract read
In one paragraph

Article in Journal of spine surgery (Hong Kong), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  6. Management of Severe Rigid Scoliosis: Best practices and controversies.Journal of clinical orthopaedics and trauma · 2025
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  7. Modeling optimal trajectory for tricortical pedicle screw fixation in adult thoracic spine: an imaging study using the three-dimensional reconstruction technique.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
    Article
  8. Article
  9. Iatrogenic posterior translation of the construct at the uppermost instrumented vertebrae is associated with proximal junctional kyphosis.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
    Article
  10. Is ABO blood type a risk factor for adjacent segment degeneration after lumbar spine fusion?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
    Article
  11. Proximal junctional kyphosis after adult spinal deformity operated patients with long fusion to the pelvis. Does the type of proximal anchor matter?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 · 2024
    Article
  12. Implant and construct decision-making in metastatic spine tumour surgery: a review of current concepts with a decision-making algorithm.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 · 2024
    Review
  13. Review
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4 · The record

Corrections and comments

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

7 authors.

Alejandro CazzulinoDepartment of Orthopedic Surgery, University of California San Francisco, San Francisco, CA, USA.
Rikesh GandhiDepartment of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.
Thaddeus WoodardDepartment of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.
Nissim AckshotaDepartment of Orthopedic Surgery, The Chaim Sheba Medical Center at Tel-Hashomer, Tel-Aviv, Israel.
M Burhan JanjuaDepartment of Neurosurgery, Mercy Health, Dallas, TX, USA.
Vincent ArletDepartment of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.
Comron SaifiDepartment of Orthopedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis cross sectional study describes a "Soft Landing" strategy utilizing hooks for minimizing proximal junctional kyphosis (PJK) and proximal junctional failure (PJF). The technique creates a gradual transition from a rigid segmental construct to unilateral hooks at the upper instrumented level and preservation of the soft tissue attachments on the contralateral side of the hooks. Authors devise a novel classification system for better grading of PJK severity.

methodsThirty-nine consecutive adult spinal deformity (ASD) patients at a single institution received the "Soft Landing" technique. The proximal junctional angle was measured preoperatively and at last follow-up using standing 36-inch spinal radiographs. Changes in proximal junctional angle and rates of PJK and PJF were measured and used to create a novel classification system for evaluating and categorizing ASD patients postoperatively.

resultsThe mean age of the cohort was 61.4 years, and 90% of patients were women. Average follow up was 2.2 years. The mean change in proximal junctional angle was 8° (SD 7.4°) with the majority of patients (53%) experiencing less than 10° and only 1 patients with proximal junctional angle over 20°. Four patients (10%) needed additional surgery for proximal extension of the uppermost instrumented vertebra (UIV) secondary to PJF.

conclusionsSoft Landing technique is a possibly effective treatment strategy to prevent PJK and PJF following ASD that requires further evaluation. The described classification system provides management framework for better grading of PJK. The "Soft Landing" technique warrants further comparison to other techniques currently used to prevent both PJK and failure.

Indexed as

Adult scoliosisadult spinal deformity (ASD)proximal junctional failure (PJF)proximal junctional kyphosis (PJK)spinal deformitysupra laminar hook

Identifiers

PMID33834125
PMCPMC8024761

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.