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Neck Disability Index As A Prognostic Factor For Outcomes Following Cervical Disc Replacement – Cervical Disc Replacement

The article presents a retrospective review aimed at investigating the relationship between the neck disability index (NDI) and outcomes after cervical disk replacement (CDR). The study found that both mild-moderately disabled and severely disabled patients experienced improvement in physical function, pain, and disability scores following CDR. Although patients with severe disability consistently achieved higher minimal clinically important difference (MCID) in NDI, the study did not find significant differences between the two cohorts. The findings suggest that NDI may not be an effective prognostic factor for outcomes after CDR, but further research with larger patient populations is needed to clarify this relationship

Summarised by Mr Mo Akmal – Lead Spinal Surgeon
The London Spine Unit : innovative spinal facility in London

Published article

Regardless of preoperative disability, both groups reported improvement in physical function, pain, and disability scores following CDR. While not finding significance, patients with severe disability preoperatively consistently demonstrated higher minimal clinically important difference achievement in NDI. These data do not promote the use of NDI as a prognostic factor for outcomes following CDR. Further study with larger patient populations may be useful to clarify this potential…

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Abstract Study design: Retrospective review. Objective: We aim to elucidate the potential relationship between neck disability index (NDI) and outcomes following cervical disk replacement (CDR). Summary of background data: The use of preoperative disability scores as predictors of outcomes following spine surgery has previously been studied, yet no literature has been published regarding its use,

Abstract

Study design: Retrospective review.

Objective: We aim to elucidate the potential relationship between neck disability index (NDI) and outcomes following cervical disk replacement (CDR).

Summary of background data: The use of preoperative disability scores as predictors of outcomes following spine surgery has previously been studied, yet no literature has been published regarding its use in CDR.

Methods: A retrospective database of a single orthopedic spine surgeon was searched for single-level CDR patients with preoperative NDI scores, excluding those with trauma, infection, or malignancy. Patients were separated into 2 cohorts by NDI score: Mild-Moderately Disabled (MD) (NDI<50) and Severely Disabled (NDI≥50). Patient-reported outcome measures were collected and compared within and between groups up to 1 year postoperatively and included Patient-reported Outcome Measurement Information System Physical Function, 12-Item Short Form (SF-12) Physical Component Score and Mental Component Score, visual analog scale (VAS) neck and arm pain, and NDI. MCID achievement rates were compared between the groups.

Results: All PROM scores significantly improved for both cohorts at one or more postoperative time points compared with preoperative baseline (P≤0.049, all), with the exception of SF-12 Mental Component Score, which only significantly improved in the MD cohort at 2 postoperative points (P≤0.007, both). Between groups, the MD cohort reported significantly superior scores at one or more time points for all studied patient-reported outcome measures (P≤0.047, all). MCID achievement rate did not significantly vary for any outcome at any time between cohorts.

Regardless of preoperative disability, both groups reported improvement in physical function, pain, and disability scores following CDR. While not finding significance, patients with severe disability preoperatively consistently demonstrated higher minimal clinically important difference achievement in NDI. These data do not promote the use of NDI as a prognostic factor for outcomes following CDR. Further study with larger patient populations may be useful to clarify this potential relationship.

The London Spine Unit : innovative spinal facility in London

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Neck Disability Index as a Prognostic Factor for Outcomes Following Cervical Disc Replacement

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Abstract Study design: Retrospective review. Objective: We aim to elucidate the potential relationship between neck disability index (NDI) and outcomes following cervical disk replacement (CDR). Summary of background data: The use of preoperative disability scores as predictors of outcomes following spine surgery has previously been studied, yet no literature has been published regarding its use
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