Older Age and Leg Pain Are Good Predictors of Pain and Disability Outcomes in 2710 Patients Who Receive Lumbar Fusion

Assessment of Functional Outcome Predictors in Patients Undergoing Lumbar Interbody Fusion Surgery: A Single-Centre Analysis

Introduction

Lumbar interbody fusion is a surgical modality performed in selected patients with low back and radicular pain not responding to medical therapy. We aim to evaluate the main predictors of functional outcome, assessed through Oswestry Disability Index (ODI), in patients submitted to a lumbar interbody fusion.

Methods

A sample of 33 patients undergoing lumbar interbody fusion at a neurosurgery department between 2017 and 2020 was selected. In order to assess functional status, ODI was applied before and after surgery. Data related to patients' medical history, current disease, and surgery performed were collected from the clinical process.

Results

In our cohort, functional improvement (pre-surgery ODI - post-surgery ODI) averaged 34.4 ± 23 points, suggesting robust surgical efficacy. We find patients with severe disability or worse to display relevant amelioration of their functional scores (p<0.0001), suggesting that these can benefit from lumbar interbody fusion surgery. The female gender (p=0.007) predicts a better outcome, which was surprising as no sex differences in lumbar fusion outcomes have been reported. Conversely, early symptom recurrence (p=0.015) and need for revision surgery (p=0.032) were found to be negative predictors of post-surgical functional outcome. Rapid return to the activities of daily living (p=0.001) and to work (p=0.002) was associated with post-surgical functional improvement. The underlying diagnosis that led to surgical referral and surgical modality did not affect the functional outcome in our patient cohort. Importantly, patients with previous lumbar surgeries had similar improvements to those who had never been operated on.

Conclusions

Severely disabled patients submitted to lumbar interbody fusion showed significant functional improvement, regardless of the referral diagnosis or the existence of previous lumbar surgeries. Additionally, sustained functional improvement resulted in a return to an active life.

Improvements in Back and Leg Pain After Minimally Invasive Lumbar Decompression

BACKGROUND

Few studies have quantified clinical improvement following minimally invasive lumbar decompression based on predominant back pain or leg pain.

PURPOSE

To quantify improvement in patient-reported outcomes following minimally invasive lumbar decompression and determine the degree of improvement in back pain, leg pain, and disability in patients who present with predominant back pain or predominant leg pain.

METHODS

Patients who underwent primary, one-level minimally invasive lumbar decompression for degenerative pathology were retrospectively reviewed. Comparisons of visual analog scale (VAS) back and leg pain scores, Oswestry Disability Index (ODI) scores, and Short Form-12 (SF-12) mental and physical component scores from pre-operative to 6-week, 12-week, 6-month, and 1-year follow-up. Subgroup analyses were performed for patients with predominant back pain or predominant leg pain.

RESULTS

A total of 102 patients were identified. Scores on VAS back and leg pain, ODI, and SF-12 physical component improved from pre-operative to all post-operative time points. After 1 year, patients reported a 2.8-point (47%) reduction in back pain and a 4-point (61.1%) reduction in leg pain scores; 52 patients with predominant back pain and 50 patients with predominant leg pain reported reductions in pain throughout the year following surgery. In both the back and leg pain cohorts, patients experienced reductions in ODI during the first 6 months and throughout 1-year follow-up, respectively. The majority of patients achieved minimum clinically important difference, regardless of predominant symptom.

CONCLUSIONS

Patients reported improvements in back and leg pain following minimally invasive lumbar decompression regardless of predominant presenting symptom; however, patients with predominant leg pain may experience greater improvement than those with predominant back pain.

Prediction of geriatric rehabilitation outcomes: Comparison between three cognitive screening tools

AIM

Comparison between the predictions of functional rehabilitation outcomes at a department of geriatric rehabilitation using three cognitive screening tools - Mini Mental State Examination (MMSE), Montreal Cognitive Assessment (MoCA), and Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE).

METHODS

This study is a prospective study. The study participants were 212 patients aged 65 and older admitted to rehabilitation departments at a geriatric facility in central Israel, from April 2016 to October 2016. The cognitive functioning of each patient was assessed using the MMSE, MoCA, and IQCODE. Upon discharge, rehabilitation outcomes were examined using the Functional Independence Measure (FIM), cognitive FIM, delta FIM (Δ FIM), and ADL.

RESULTS

Cognitive impairment was found to interfere with the rehabilitation process. The MMSE was the best predictor of functional rehabilitation outcomes at discharge, compared to the IQCODE, while the MoCA did not predict these measures. In addition, when distinguishing between patients by ethnicity (Jewish versus Arab), the MMSE and the IQCODE predicted FIM upon discharge among Jewish patients, while only the IQCODE predicted FIM upon discharge among Arab patients.

CONCLUSIONS

The research findings show that cognitive assessment upon admission for rehabilitation - MMSE among Jewish patients and IQCODE among Arab patients - can help predict functional rehabilitation outcomes and make the appropriate adaptations in the rehabilitation program. Geriatr Gerontol Int 2017; 17: 2507-2513.

Influence of perioperative complication severity on 1- and 2-year outcomes of low back surgery

Background

Several factors potentially influence outcomes of surgery, including perioperative complications. Complications may take many forms and the Clavien–Dindo (CD) classification is designed to categorize them by degree of severity. The aim of this study was to evaluate the influence of perioperative complications by severity categorization on the 1-and 2-year pain and disability outcomes for patients who received low back surgery.

Materials and methods

Data used for the study involved a purposive sample (N = 477; 8.1%) from a spine outcomes registry of 5876 patients who received spine surgery and encountered complications. All complications were categorized using the CD classification and were collapsed according to distribution frequencies, i.e., Grade I–II and Grade III–V. Adjusted and unadjusted regression analyses were used to determine the association between CD classification and 1- and 2-year outcomes.

Results

The majority of surgical complications were Grade III−V (N = 358; 75.1%), with two incidences in which death occurred. For the unadjusted models, there were no significant associations between CD classification categorizations for 1-year outcomes; however, 2-year outcomes were significantly worse (P <0.05) for those with Grade III–V categorization. When adjusted and controlled for baseline characteristics, CD classification did not influence 1-or 2-year pain and disability outcomes.

Conclusions

When control variables are considered, the severity of perioperative surgical complications does not appear to influence 1- or 2-year pain and disability outcomes.

Level of evidence

Level 4.