Evidence map›Paper›PMID 35949020›Full record

ArticleGlobal spine journal2024

Preoperative Disc Angle is an Important Predictor of Segmental Lordosis After Degenerative Spondylolisthesis Fusion.

Abdulmajeed Alahmari, Patrick Thornley, Andrew Glennie, Jennifer C Urquhart, Fares Al-Jahdali, Raja Rampersaud, Charles Fisher, Fawaz Siddiqi, Parham Rasoulinejad, Christopher S Bailey

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In one paragraph

Article in Global spine journal, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
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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

10 authors.

Abdulmajeed AlahmariDivision of Orthopaedics, Department of Surgery, Western University, London, ON, Canada.
Patrick ThornleyDivision of Orthopaedics, Department of Surgery, Western University, London, ON, Canada.ORCID 0000-0001-8777-2983
Andrew GlennieDepartment of Orthopedics and Neurosurgery, Dalhousie University, Halifax, NS, Canada.
Jennifer C UrquhartLawson Health Research Institute, London, ON, Canada.ORCID 0000-0002-9393-814X
Fares Al-JahdaliDepartment of Orthopedics and Neurosurgery, Dalhousie University, Halifax, NS, Canada.
Raja RampersaudUniversity of Toronto, Toronto, Ontario, Canada; University Health Network, Toronto, Ontario, Canada; Arthritis Program, Krembil Research Institute, Toronto, Ontario, Canada.
Charles FisherUniversity of British Columbia, Vancouver, British Columbia, Canada; Vancouver General Hospital, Vancouver, BC, Canada.
Fawaz SiddiqiDivision of Orthopaedics, Department of Surgery, Western University, London, ON, Canada.
Parham RasoulinejadDivision of Orthopaedics, Department of Surgery, Western University, London, ON, Canada.
Christopher S BaileyDivision of Orthopaedics, Department of Surgery, Western University, London, ON, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

designRetrospective Cohort Study.

objectivesTo determine the effect of interbody cages inserted via posterior approach on segmental lordosis in the setting of preoperative lordotic vs kyphotic discs in patients with lumbar degenerative spondylolisthesis (LDS).

methodsRetrospective analysis of prospectively collected data on assessment and management of LDS patients from 2 contributing centres. Patients were analyzed preoperatively and at 12-month follow-up with standing lumbar radiographs. Index level segmental lumbar lordosis (SLL), disc angle and global lumbar lordosis was measured. Patients were stratified into 4 groups based on index level disc angle and procedure: preoperative lordotic posterolateral fusion (group L-PLF); preoperative kyphotic PLF (group K-PLF); preoperative lordotic interbody fusion (IF) (group L-IF); preoperative kyphotic IF (group K-IF).

resultsA total of 100/111 (90%) patients completed follow-up with 40 in group L-IF and 48 in group K-IF. There were 18 patients in group L-PLF and 5 in group K-PLF. Among patients with preoperatively lordotic disc angles who had a worsening of SLL, group L-IF had worse SLL than group L-PLF patients, with differences persisting at one-year (mean difference 2.30, 95% CI, .3, 4.3,

conclusionSegmental lordosis worsening was greater with preoperative index lordotic disc angles when an interbody cage was used. Patients who have a kyphotic disc preoperatively gain more lordosis with interbody cage use.

Indexed as

degenerativedegenerative spondylolisthesislumbar interbody fusionlumbar lordosisposterolateral fusionsagittal alignmentsagittal balance

Identifiers

PMID35949020
PMCPMC10802516

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