Microendoscopic decompression for lumbosacral foraminal stenosis: a novel surgical strategy based on anatomical considerations using 3D image fusion with MRI/CT

2020 ◽  
Vol 33 (6) ◽  
pp. 789-795
Author(s):  
Shizumasa Murata ◽  
Akihito Minamide ◽  
Hiroshi Iwasaki ◽  
Yukihiro Nakagawa ◽  
Hiroshi Hashizume ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Soft Tissue ◽  
Minimally Invasive ◽  
Image Fusion ◽  
Invasive Surgery ◽  
Outer Edge ◽  
Leg Pain ◽  
Foraminal Stenosis ◽  
Low Back ◽  
3D Image

OBJECTIVEPersistent lumbar foraminal stenosis (LFS) is one of the most common reasons for poor postoperative outcomes and is a major contributor to “failed back surgery syndrome.” The authors describe a new surgical strategy for LFS based on anatomical considerations using 3D image fusion with MRI/CT analysis.METHODSA retrospective review was conducted on 78 consecutive patients surgically treated for LFS at the lumbosacral junction (2013–2017). The location and extent of stenosis, including the narrowest site and associated pathology (bone or soft tissue), were measured using 3D image fusion with MRI/CT. Stenosis was defined as medial intervertebral foraminal (MF; inner edge to pedicle center), lateral intervertebral foraminal (LF; pedicle center to outer edge), or extraforaminal (EF; outside the pedicle). Lumbar (low-back pain, leg pain) and patient satisfaction visual analog scale (VAS) scores and Japanese Orthopaedic Association (JOA) scores were evaluated. Surgical outcome was evaluated 2 years postoperatively.RESULTSMost instances of stenosis existed outside the pedicle’s center (94%), including LF (58%), EF (36%), and MF (6%). In all MF cases, stenosis resulted from soft-tissue structures. The narrowest stenosis sites were localized around the pedicle’s outer border. The areas for sufficient nerve decompression were extended in MF+LF (10%), MF+LF+EF (14%), LF+EF (39%), LF (11%), and EF (26%). No iatrogenic pars interarticularis damage occurred. The JOA score was 14.9 ± 2.6 points preoperatively and 22.4 ± 3.5 points at 2 years postoperatively. The JOA recovery rate was 56.0% ± 18.6%. The VAS score (low-back and leg pain) was significantly improved 2 years postoperatively (p < 0.01). According to patients’ self-assessment of the minimally invasive surgery, 62 (79.5%) chose “surgery met my expectations” at follow-up. Nine patients (11.5%) selected “I did not improve as much as I had hoped but I would undergo the same surgery for the same outcome.”CONCLUSIONSMost LFS existed outside the pedicle’s center and was rarely noted in the pars region. The main regions of stenosis were localized to the pedicle’s outer edge. Considering this anatomical distribution of LFS, the authors recommend that lateral fenestration should be the first priority for foraminal decompression. Other surgical options including foraminotomy, total facetectomy, and hemilaminectomy likely require more bone resections than LFS treatment. The microendoscopic surgery results were very good, indicating that this minimally invasive surgery was suitable for treating this disease.

The continually evolving field of surgery

2018 ◽  
Vol 183 (17) ◽  
pp. 546.2-546
Keyword(s):  
Minimally Invasive Surgery ◽  
Soft Tissue ◽  
Regenerative Medicine ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Orthopaedic Surgery ◽  
Small Animal ◽  
Imaging Modalities ◽  
Animal Surgery

BVA members can claim an exclusive discount on the latest edition of Small Animal Surgery by Theresa Welch Fossum. Described as ‘the go-to, full-colour guide for everything that general veterinarians and vet students need to know about both soft tissue and orthopaedic surgery’, the new 5th edition discusses the latest advances in key areas such as imaging modalities, regenerative medicine, minimally invasive surgery and neurology

Predictors of the Best Outcomes Following Minimally Invasive Surgery for Grade 1 Lumbar Spondylolisthesis

Neurosurgery ◽  
2019 ◽  
Vol 66 (Supplement_1) ◽  
Author(s):  
Andrew Kai-Hong Chan ◽  
Erica F Bisson ◽  
Mohamad Bydon ◽  
Steven D Glassman ◽  
Kevin T Foley ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Back Pain ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Rating Scale ◽  
College Education ◽  
Leg Pain ◽  
Degenerative Lumbar Spondylolisthesis ◽  
Patient Reported ◽  
Lumbar Spondylolisthesis

Abstract INTRODUCTION The factors driving the best outcomes following minimally invasive surgery (MIS) for degenerative lumbar spondylolisthesis (DLS) are not clearly elucidated. This study investigates the factors that drive the best patient reported outcomes (PRO) following MIS for DLS. METHODS A total of 608 patients from the prospective Quality Outcomes Database (QOD) Lumbar Spondylolisthesis Registry underwent surgery for grade 1 DLS of whom 259 underwent surgery with MIS techniques [187 fusions (72.2%)]. Surgeries were classified as MIS if any of the following were involved: MIS laminectomy, MIS pedicle screws, MIS interbody grafts, or percutaneous screws. Outcomes were assessed at 24 mo postoperatively. PROs included the Oswestry Disability Index (ODI), numeric rating scale (NRS) Back Pain, NRS Leg Pain, EuroQoL-5D (EQ-5D) Questionnaire, and North American Spine Society (NASS) Satisfaction Questionnaire. Multivariate models were constructed adjusting for patient characteristics, presentation characteristics, surgical variables, socioeconomic characteristics, and baseline PRO values. RESULTS The mean age of the MIS cohort was 64.2 ± 11.5 yr [148 (57.1%) women and 111 (42.9%) men]. In multivariate analyses, aside from baseline PRO values, only 3 factors were significantly associated with multiple 24-mo PRO change scores: employment, age, and the addition of fusion to surgery. Employment was associated with superior postoperative ODI (ß-7.8; 95% CI [−12.9- −2.6]; P = .003), NRS back pain (ß-1.2; 95% CI [−2.1- −0.4]; P = 0.004), EQ-5D (ß0.1; 95% CI [0.01-0.1]; P = .03), and NASS satisfaction (OR = 0.27; 95% CI [0.12-0.58]; P < .001). Increasing age was associated with superior NRS leg pain (ß-0.1; 95% CI [minus;0.1- minus;0.01]; P = .03) and NASS satisfaction (OR = 0.95; 95% CI [0.92-0.99]; P = .02). The addition of a fusion was associated with superior ODI (ß-6.7; 95% CI [minus;12.7- minus;0.7]; P = .03), NRS back pain (ß-1.1; 95% CI [minus;2.1- minus;0.2]; P = .02), and NASS satisfaction (OR = 0.28; 95% CI [0.12-0.62]; P = .002). CONCLUSION Preoperative active employment, at least 4 yr of college education, and surgeries including a fusion were significant predictors of superior outcomes across the domains of disease-specific disability, back pain, leg pain, quality of life, and patient satisfaction. Increasing age was predictive of superior outcomes for leg pain and satisfaction.

Predictors of the Best Outcomes Following Minimally Invasive Surgery for Grade 1 Degenerative Lumbar Spondylolisthesis

Neurosurgery ◽  
2020 ◽  
Author(s):  
Andrew K Chan ◽  
Erica F Bisson ◽  
Mohamad Bydon ◽  
Steven D Glassman ◽  
Kevin T Foley ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Back Pain ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Rating Scale ◽  
Numeric Rating Scale ◽  
Leg Pain ◽  
Degenerative Lumbar Spondylolisthesis ◽  
Patient Reported ◽  
Lumbar Spondylolisthesis

Abstract BACKGROUND The factors driving the best outcomes following minimally invasive surgery (MIS) for grade 1 degenerative lumbar spondylolisthesis are not clearly elucidated. OBJECTIVE To investigate the factors that drive the best 24-mo patient-reported outcomes (PRO) following MIS surgery for grade 1 degenerative lumbar spondylolisthesis. METHODS A total of 259 patients from the Quality Outcomes Database lumbar spondylolisthesis module underwent single-level surgery for degenerative grade 1 lumbar spondylolisthesis with MIS techniques (188 fusions, 72.6%). Twenty-four-month follow-up PROs were collected and included the Oswestry disability index (ODI) change (ie, 24-mo minus baseline value), numeric rating scale (NRS) back pain change, NRS leg pain change, EuroQoL-5D (EQ-5D) questionnaire change, and North American Spine Society (NASS) satisfaction questionnaire. Multivariable models were constructed to identify predictors of PRO change. RESULTS The mean age was 64.2 ± 11.5 yr and consisted of 148 (57.1%) women and 111 (42.9%) men. In multivariable analyses, employment was associated with superior postoperative ODI change (β-7.8; 95% CI [−12.9 to −2.6]; P = .003), NRS back pain change (β −1.2; 95% CI [−2.1 to −0.4]; P = .004), EQ-5D change (β 0.1; 95% CI [0.01-0.1]; P = .03), and NASS satisfaction (OR = 3.7; 95% CI [1.7-8.3]; P &lt; .001). Increasing age was associated with superior NRS leg pain change (β −0.1; 95% CI [−0.1 to −0.01]; P = .03) and NASS satisfaction (OR = 1.05; 95% CI [1.01-1.09]; P = .02). Fusion surgeries were associated with superior ODI change (β −6.7; 95% CI [−12.7 to −0.7]; P = .03), NRS back pain change (β −1.1; 95% CI [−2.1 to −0.2]; P = .02), and NASS satisfaction (OR = 3.6; 95% CI [1.6-8.3]; P = .002). CONCLUSION Preoperative employment and surgeries, including a fusion, were predictors of superior outcomes across the domains of disease-specific disability, back pain, leg pain, quality of life, and patient satisfaction. Increasing age was predictive of superior outcomes for leg pain improvement and satisfaction.

Is achieving optimal spinopelvic parameters necessary to obtain substantial clinical benefit? An analysis of patients who underwent circumferential minimally invasive surgery or hybrid surgery with open posterior instrumentation

2019 ◽  
Vol 30 (6) ◽  
pp. 833-838 ◽  
Author(s):  
Paul Park ◽  
Kai-Ming Fu ◽  
Robert K. Eastlack ◽  
Stacie Tran ◽  
Gregory M. Mundis ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Clinical Outcomes ◽  
Invasive Surgery ◽  
Clinical Benefit ◽  
Posterior Instrumentation ◽  
Leg Pain ◽  
Spinopelvic Parameters ◽  
Hybrid Surgery ◽  
Substantial Clinical Benefit

OBJECTIVEIt is now well accepted that spinopelvic parameters are correlated with clinical outcomes in adult spinal deformity (ASD). The purpose of this study was to determine whether obtaining optimal spinopelvic alignment was absolutely necessary to achieve a minimum clinically important difference (MCID) or substantial clinical benefit (SCB).METHODSA multicenter retrospective review of patients who underwent less-invasive surgery for ASD was conducted. Inclusion criteria were age ≥ 18 years and one of the following: coronal Cobb angle > 20°, sagittal vertical axis (SVA) > 5 cm, pelvic tilt (PT) > 20°, or pelvic incidence to lumbar lordosis (PI-LL) mismatch > 10°. A total of 223 patients who were treated with circumferential minimally invasive surgery or hybrid surgery and had a minimum 2-year follow-up were identified. Based on optimal spinopelvic parameters (PI-LL mismatch ± 10° and SVA < 5 cm), patients were divided into aligned (AL) or malaligned (MAL) groups. The primary clinical outcome studied was the Oswestry Disability Index (ODI) score.RESULTSThere were 74 patients in the AL group and 149 patients in the MAL group. Age and body mass index were similar between groups. Although the baseline SVA was similar, PI-LL mismatch (9.9° vs 17.7°, p = 0.002) and PT (19° vs 24.7°, p = 0.001) significantly differed between AL and MAL groups, respectively. As expected postoperatively, the AL and MAL groups differed significantly in PI-LL mismatch (−0.9° vs 13.1°, p < 0.001), PT (14° vs 25.5°, p = 0.001), and SVA (11.8 mm vs 48.3 mm, p < 0.001), respectively. Notably, there was no difference in the proportion of AL or MAL patients in whom an MCID (52.75% vs 61.1%, p > 0.05) or SCB (40.5% vs 46.3%, p > 0.05) was achieved for ODI score, respectively. Similarly, no differences in percentage of patients obtaining an MCID or SCB for visual analog scale back and leg pain score were observed. On multivariate analysis controlling for surgical and preoperative demographic differences, achieving optimal spinopelvic parameters was not associated with achieving an MCID (OR 0.645, 95% CI 0.31–1.33) or an SCB (OR 0.644, 95% CI 0.31–1.35) for ODI score.CONCLUSIONSAchieving optimal spinopelvic parameters was not a predictor for achieving an MCID or SCB. Since spinopelvic parameters are correlated with clinical outcomes, the authors’ findings suggest that the presently accepted optimal spinopelvic parameters may require modification. Other factors, such as improvement in neurological symptoms and/or segmental instability, also likely impacted the clinical outcomes.

Oral surgery

2014 ◽  
pp. 351-406
Author(s):  
David A. Mitchell ◽  
Laura Mitchell ◽  
Lorna McCaul
Keyword(s):  
Minimally Invasive Surgery ◽  
Soft Tissue ◽  
Minimally Invasive ◽  
Invasive Surgery ◽  
Oral Surgery ◽  
Maxillary Antrum ◽  
Third Molar ◽  
Preprosthetic Surgery ◽  
Benign Tumours ◽  
Unerupted Teeth

Contents. Principles of surgery of the mouth. Asepsis and antisepsis. Forceps, elevators, and other instruments. The extraction of teeth. Complications of extracting teeth. Post-operative bleeding. Suturing. Dento-alveolar surgery: bisphosphonates. Dento-alveolar surgery: removal of roots. Dento-alveolar surgery: removal of unerupted teeth. Dento-alveolar surgery: removal of third molars. Dento-alveolar surgery: coronectomy. Dento-alveolar surgery: third-molar technique. Dento-alveolar surgery: apicectomy. Dento-alveolar surgery: other aids to endodontics. Dento-alveolar surgery: helping the orthodontist. Dento-facial infections. Biopsy. Cryosurgery. Non-tumour soft-tissue lumps in the mouth. Non-tumour hard-tissue lumps. Cysts of the jaws. Benign tumours of the mouth. The maxillary antrum. Minor preprosthetic surgery. Implantology. Lasers. Minimally invasive surgery.

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