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Surgical outcome of workman's comp patients undergoing endoscopic foraminal decompression for lumbar herniated disc.

ABSTRACT: Background:Worker's compensation (WC) patients undergoing spine surgery typically experience delayed return to work (RTW) compared with non-WC patients, especially those approved for surgery undergoing traditional open spine surgery. The purpose of this study was to describe the observe RTW rates in WC patients after minimally invasive "selective endoscopic discectomy" (SED™) for a lumbar herniated disc. Methods:Clinical outcomes using the modified Macnab criteria and RTW data were analyzed in 118 WC patients following the outpatient SED™ procedure in an ambulatory surgery center (ASC) using only local anesthesia with or without sedation. This endoscopic transforaminal decompression was trademarked by Anthony Yeung as SED. Results:Single-level SED™ was performed in 62 patients, a two-level in 48 patients, a three-level decompression in 6, and a four-level decompression in another two patients, respectively. Patient selection was augmented by diagnostic and therapeutic injections performed preoperatively to determine how many levels of spine segments required surgical intervention. At the two-year follow-up, Excellent Macnab outcome in 36 patients, Good in 53, Fair in another 21, and Poor in the remaining eight patients, respectively. Of the 118 WC patients, 89 (75.42%) were released back to their original job within in 6 weeks from the index operation. The average time to work release was 4.2 months. Twenty-one patients who had previous spine surgery were working. Twenty-nine of the 118 study patients (24.58%) were unable to return to their original job. Conclusions:In the hands of a well-trained endoscopic spine surgeon, RTW rates with SED™ are higher than with traditional open translaminar surgery. Therefore, endoscopic surgery should be considered for WC patients and further be validated as a cost-effective alternative to open spine surgery.

SUBMITTER: Yeung A

PROVIDER: S-EPMC7063301 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Surgical outcome of workman's comp patients undergoing endoscopic foraminal decompression for lumbar herniated disc.

Yeung Anthony A Wei Shan-Hua SH

Journal of spine surgery (Hong Kong) 20200101 Suppl 1

<h4>Background</h4>Worker's compensation (WC) patients undergoing spine surgery typically experience delayed return to work (RTW) compared with non-WC patients, especially those approved for surgery undergoing traditional open spine surgery. The purpose of this study was to describe the observe RTW rates in WC patients after minimally invasive "selective endoscopic discectomy" (SED™) for a lumbar herniated disc.<h4>Methods</h4>Clinical outcomes using the modified Macnab criteria and RTW data wer ...[more]

PMID: 32195420

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Project description:Background:Contained lumbar disc herniations frequently cause back- and leg pain. Clinical outcomes with surgical treatment may be affected by the size and location of the disc herniation. The surgical directly visualized transforaminal endoscopic decompression has gained acceptance and popularity, while the simplified percutaneous laser disc decompression has fallen out of favor in spite of its initial success as a minimally invasive intervention. In an attempt to better understand the durability of both procedures, the authors performed a comparative analysis of clinical outcomes in patients with contained lumbar disc herniations. Methods:The study population was comprised 248 patients consisting of 162 patients in the endoscopy group (group 1) and 86 patients in the laser group (group 2). Primary outcome measures were Macnab criteria. Herniations were classified as large or small. Additional parameters of advanced degeneration of the lumbar motion segment including posterior disc- and lateral recess height of <3 mm were recorded. IBM SPSS 25.0 was used for Kaplan-Meier survival analysis and cross-tabulation of these variables with statistical testing for significant associations. Results:The mean follow-up was 43.5 months. The serial time recorded for Kaplan-Meier analysis ranged from 1.5 to 84 months. The mean age was 53.37 years (standard deviation =14.65 years). The majority of patients had Excellent and Good Macnab outcomes (212/248; 85.5%) regardless of treatment. Fair and Poor results were achieved in another 36 patients (14.5%). There was a higher percentage of Excellent Macnab outcomes in the endoscopy group (94/162; 58.0%) than in the laser group (38/86; 44.2%) at a statistical significant level (P<0.0001). There was a statistically significantly higher percentage of Excellent and Good Macnab outcomes with endoscopic decompression of small paracentral herniations (97.1%; P<0.0001). Percutaneous laser decompression of large central disc herniations was not statistically better than endoscopic surgical decompression (P=0.125). Endoscopic bony and soft tissue decompression was also better than laser at alleviating symptoms in patients with reduced posterior disc- and lateral recess height with 96.7% in patients with reduced disc height of <3 mm and 94% in patients with reduced lateral recess height of <3 mm (P=0.001). Kaplan-Meier (K-M) Survival time showed longer median survival of the treatment benefit for patients who underwent visualized endoscopic surgical decompression (66.0 months) compared to median K-M survival time for percutaneous laser decompression of 17 months (P<0.0001). Conclusions:Transforaminal endoscopic decompression for symptomatic herniated disc is an effective and durable surgical treatment to alleviate sciatica-type and back symptoms in the vast majority of patients with good long-term survival of pain relief for up to six years. Interventional percutaneous non-visualized laser decompression for the same condition may provide favorable outcomes in the short-term with soft protrusions. However, the treatment effect deteriorates much faster with a median survival of 17 months.

Project description:Background contextRepeat lumbar spine surgery is generally an undesirable outcome. Variation in repeat surgery rates may be because of patient characteristics, disease severity, or hospital- and surgeon-related factors. However, little is known about population-level variation in reoperation rates.PurposeTo examine hospital- and surgeon-level variation in reoperation rates after lumbar herniated disc surgery and to relate these to published benchmarks.Study design/settingRetrospective analysis of a discharge registry including all nonfederal hospitals in Washington State.MethodsWe identified adults who underwent an initial inpatient lumbar decompression for herniated disc from 1997 to 2007. We then performed generalized linear mixed-effect logistic regressions, controlling for patient characteristics and comorbidity, to examine the variation in reoperation rates within 90 days, 1 year, and 4 years.ResultsOur cohort included 29,529 patients with a mean age of 47.5 years, 61% privately insured, and 15% having any comorbidity. The age-, sex-, insurance-, and comorbidity-adjusted mean rate of reoperation among hospitals was 1.9% at 90 days (95% confidence interval [CI], 1.2-3.1), with a range from 1.1% to 3.4%; 6.4% at 1 year (95% CI, 3.9-10.6), with a range from 2.8% to 12.5%; and 13.8% at 4 years (95% CI, 8.8-19.8), with a range from 8.1% to 24.5%. The adjusted mean reoperation rates of surgeons were 1.9% at 90 days (95% CI, 1.4-2.4) with a range from 1.2% to 4.6%, 6.1% at 1 year (95% CI, 4.8-7.7) with a range from 4.3% to 10.5%, and 13.2% at 4 years (95% CI, 11.3-15.5) with a range from 10.0% to 19.3%. Multilevel random-effect models suggested that variation across surgeons was greater than that of hospitals and that this effect increased with long-term outcomes.ConclusionsEven after adjusting for patient demographics and comorbidity, we observed a large variation in reoperation rates across hospitals and surgeons after lumbar discectomy, a relatively simple spinal procedure. These findings suggest uncertainty about indications for repeat surgery, variations in perioperative care, or variations in quality of care.

Project description:BackgroundWe aim to investigate associations between preoperative radiological findings of lumbar foraminal stenosis with clinical outcomes after posterior microsurgical decompression in patients with predominantly central lumbar spinal stenosis (LSS).MethodsThe study was an additional analysis in the NORDSTEN Spinal Stenosis Trial. In total, 230 men and 207 women (mean age 66.8 (SD 8.3)) were included. All patients underwent an MRI including T1- and T2-weighted sequences. Grade of foraminal stenosis was dichotomized into none to moderate (0-1) and severe (2-3) category using Lee's classification system. The Oswestry Disability Index (ODI), Zurich Claudication Questionnaire (ZCQ), and numeric rating scale (NRS) for back and leg pain were collected at baseline and at 2-year follow-up. Primary outcome was a reduction of 30% or more on the ODI score. Secondary outcomes included the mean improvement on the ODI, ZCQ, and NRS scores. We performed multivariable regression analyses with the radiological variates foraminal stenosis, Pfirrmann grade, Schizas score, dural sac cross-sectional area, and the possible plausible confounders: patients' gender, age, smoking status, and BMI.ResultsThe cohort of 437 patients presented a high degree of degenerative changes at baseline. Of 414 patients with adequate imaging of potential foraminal stenosis, 402 were labeled in the none to moderate category and 12 in the severe category. Of the patients with none to moderate foraminal stenosis, 71% achieved at least 30% improvement in ODI. Among the patients with severe foraminal stenosis, 36% achieved at least 30% improvement in ODI. A significant association between severe foraminal stenosis and less chance of reaching the target of 30% improvement in the ODI score after surgery was detected: OR 0.22 (95% CI 0.06, 0.83), p=0.03. When investigating outcome as continuous variables, a similar association between severe foraminal stenosis and less improved ODI with a mean difference of 9.28 points (95%CI 0.47, 18.09; p=0.04) was found. Significant association between severe foraminal stenosis and less improved NRS pain in the lumbar region was also detected with a mean difference of 1.89 (95% CI 0.30, 3.49; p=0.02). No significant association was suggested between severe foraminal stenosis and ZCQ or NRS leg pain.ConclusionIn patients operated with posterior microsurgical decompression for LSS, a preoperative severe lumbar foraminal stenosis was associated with higher proportion of patients with less than 30% improvement in ODI.Trial registrationThe study is registered at ClinicalTrials.gov (22.11.2013) under the identifier NCT02007083.

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Surgical outcome of workman's comp patients undergoing endoscopic foraminal decompression for lumbar herniated disc.

Publications

Surgical outcome of workman's comp patients undergoing endoscopic foraminal decompression for lumbar herniated disc.

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