scholarly journals Stent screw–assisted internal fixation (SAIF): clinical report of a novel approach to stabilizing and internally fixating vertebrae destroyed by malignancy

2020 ◽  
Vol 32 (4) ◽  
pp. 507-518 ◽  
Author(s):  
Alessandro Cianfoni ◽  
Daniela Distefano ◽  
Pietro Scarone ◽  
Gianfranco A. Pesce ◽  
Vittoria Espeli ◽  
...  

OBJECTIVESevere lytic cancerous lesions of the spine are associated with significant morbidity and treatment challenges. Stabilization and restoration of the axial load capability of the vertebral body (VB) are important to prevent or arrest vertebral collapse. Percutaneous stent screw–assisted internal fixation (SAIF), which anchors a VB stent/cement complex with pedicular screws to the posterior vertebral elements, is a minimally invasive, image-guided, 360° internal fixation technique that can be utilized in this patient cohort. The purpose of this study was to assess the feasibility, safety, and stabilization efficacy of VB reconstruction via the SAIF technique in a cohort of patients with extensive lytic vertebral lesions, who were considered to have an unstable or potentially unstable spine according to the Spinal Instability Neoplastic Score (SINS).METHODSThis study was a retrospective assessment of a prospectively maintained database of a consecutive series of patients with neoplastic extensive extracompartmental osteolysis (Tomita type 4–6) of the VB treated with the SAIF technique. VB reconstruction was assessed on postprocedure plain radiographs and CT by two independent raters. Technical and clinical complications were recorded. Clinical and imaging follow-ups were assessed.RESULTSThirty-five patients with extensive osteolytic metastatic lesions of the VB underwent 36 SAIF procedures. SAIF was performed as a stand-alone procedure in 31/36 cases and was associated with posterior surgical fixation in 5/36 (4/5 with decompressive laminectomy). In 1 case an epidural cement leak required surgical decompression. VB reconstruction was categorized as satisfactory (excellent or good rating) by the two raters in 34/36 cases (94.5%) with an interrater reliability of 94.4% (Cohen’s kappa of 0.8). Follow-up, ranging from 1 to 30 months, was available for 30/36 levels. Long-term follow-up (6–30 months, mean 11.5 months) was available for 16/36 levels. Stability during follow-up was noted in 29/30 cases.CONCLUSIONSSAIF provides 360° nonfusion internal fixation that stabilizes the VB in patients with extensive lytic lesions that would otherwise be challenging to treat.

Author(s):  
Xin Zhang ◽  
Yuting Zhang ◽  
Jian Wang ◽  
Qianbing Wan ◽  
Lei Li

This clinical report describes a combined lateral-crestal approach to elevate the sinus floor when placing implants on a wide maxillary posterior ridge. The buccally enlarged osteotomy broadens vision of practitioners and facilitates access of instruments in the sinus. Compared to the traditional lateral approach of sinus lift, the proposed technique may offer a more conservative treatment modality. And a clinical study with sufficient subjects and long term follow up is needed to validate the potential and limitations of the proposed technique.


2008 ◽  
Vol 146A (13) ◽  
pp. 1748-1753 ◽  
Author(s):  
Isabel Mendes Gaspar ◽  
Tiago Saldanha ◽  
Pedro Cabral ◽  
M. Manuel Vilhena ◽  
Madalena Tuna ◽  
...  

Author(s):  
Shrikrishna V Acharya

Introduction: Hypoparathyroidism is commonly seen after total thyroidectomy. Though most of the time it is transient in nature but permanent decrease in function of the parathyroid function is also possible. Aim: A retrospective analysis of clinical presentation, treatment, prevalence of complications of hypoparathyroidism and its treatment with active vitamin D analogues was conducted. Materials and Methods: A retrospective cohort study followed by location and duration of study of all patients who developed Permanent Hypoparathyroidism (PH) and who were regular in follow-up for at least three years. Any patient with intact Parathyroid Hormone (iPTH) levels <13 pg/mL and was on replacement therapy with calcium and/or vitamin D for at least one year after surgery is labelled as PH. Data of their treatment, serum calcium, phosphorous, creatinine, urine calcium/creatinine ratio and renal ultrasound was recorded. Data was represented as percentage, mean and standard deviation. Statistical analysis was conducted using SPSS version 19. Results: Out of the 23 patients enrolled, three were male and 20 were female with a mean age of 41.2±15.2 years. The mean duration of follow-up was 48±28 months. Clinical complications in 12 patients were observed. Two patients developed renal colic due to renal stone on follow-up. None of the patients developed renal failure. Conclusion: PH causes considerable morbidity and economic burden to family due to its lifelong treatment and monitoring. It requires regular follow-up and monitoring to prevent complications of disease as well as its treatment with active calcium salts. Around 50% of the patients suffered few relevant clinical events requiring hospitalisation.


Stroke ◽  
2012 ◽  
Vol 43 (suppl_1) ◽  
Author(s):  
Eric M Jackson ◽  
Ning Lin ◽  
Lissa Baird ◽  
R. Michael Scott ◽  
Edward R Smith

Introduction: Moyamoya patients under two years of age represent a therapeutic challenge because of their frequent neurologic instability and concomitant anesthetic risks. We report our experience with pial synangiosis revascularization in this population. Methods: We reviewed the clinical and radiographic records of all patients with moyamoya syndrome in a consecutive series of patients under 2 years of age, who underwent cerebral revascularization surgery using pial synangiosis at a single institution. Results: During a 12-year period (1994-2005), thirty-four procedures (15 bilateral, 4 unilateral) were performed in 19 patients under two years of age (out of a total of 456 procedures in 240 patients). Eighteen of these patients presented with either stroke or TIA. Average age at first surgery was 1.4 years (range 6 months to 1.9 years). Unanticipated staged operations occurred in three patients, two due to persistent EEG changes during the initial surgery and one due to brain swelling during the procedure requiring ventriculostomy. There were two perioperative strokes; both patients had post-operative seizures but made clinical recoveries. The average follow-up was 7 years (range 1-14). In long term follow-up, 13 patients (68%) were clinically independent for their age, with 8 (42%) having no significant deficit. Late complications included subdural hygroma evacuation (1), additional revascularization procedures years later for frontal lobe ischemia (2), late infarction (1) and asymptomatic ischemic change on routine follow-up MRI studies (1). All patients who had both pre and post-operative angiography demonstrated progression of disease. Conclusions: Despite the challenges inherent to this population, the majority of children with moyamoya under 2 years of age have a good long-term prognosis. Our data support the use of pial synangiosis as a safe, effective and durable method for treatment of moyamoya for most children in this potentially high-risk population.


2001 ◽  
Vol 31 (5) ◽  
pp. 899-905 ◽  
Author(s):  
G. A. FAVA ◽  
S. GRANDI ◽  
C. RAFANELLI ◽  
C. RUINI ◽  
S. CONTI ◽  
...  

Background. There is very little information on long-term follow-up of social phobia.Methods. A consecutive series of 70 patients satisfying the DSM-IV criteria for social phobia was treated in an out-patient clinic with behavioural methods based on exposure homework. Forty-five patients were judged to be remitted after eight individual sessions of psychotherapy. A 2 to 12 year (median = 6 years) follow-up was performed. Survival analysis was selected to characterize the clinical course of patients. Assessments were performed before treatment, at the end of therapy, after 1 year, and subsequently on a yearly basis, and utilized selected items of Paykel's Clinical Interview for Depression.Results. Six of the 45 patients (13%) had a relapse of social phobia at some time during follow-up. The estimated cumulative percentage of patients remaining in remission was 98 after 2 years, 85 after 5 years and 85 after 10 years. Such probabilities increased in the absence of a personality disorder, of residual social phobic avoidance after exposure, and of concurrent use of benzodiazepines.Conclusions. The findings suggest that, even though one patient out of three is unable to complete treatment or does not benefit sufficiently from it, exposure treatment can provide lasting effects to the majority of patients with social phobia. Disappearance of residual, subclinical social phobic avoidance appears to be the target of treatment.


2006 ◽  
Vol 5 (4) ◽  
pp. 313-319 ◽  
Author(s):  
Hideki Sudo ◽  
Manabu Ito ◽  
Kuniyoshi Abumi ◽  
Yoshihisa Kotani ◽  
Tatsuto Takeuchi ◽  
...  

Object As increasing numbers of patients receive long-term hemodialysis, the number of reports regarding hemodialysis-related cervical spine disorders has also increased. However, there have been few reports summarizing the surgical results in patients with these disorders. The objective of this study was to evaluate the long-term follow up and clinical results after surgical treatment of cervical disorders in patients undergoing hemodialysis. Methods Seventeen patients in whom surgery was performed for cervical spine disorders while they received long-term hemodialysis therapy were enrolled in this study. Of these, 15 underwent follow-up review for more than 3 years after surgery, and these represent the study population. The remaining two patients died of postoperative sepsis. The average follow-up period was 120 months. Five patients without spinal instability underwent spinal cord decompression in which bilateral open-door laminoplasty was performed. Ten patients with destructive spondyloarthropathy (DSA) underwent reconstructive surgery involving pedicle screw (PS) fixation. In eight patients in whom posterior instrumentation was placed, anterior strut bone grafting was performed with autologous iliac bone to treat anterior-column destruction. Marked neurological recovery was obtained in all patients after the initial surgery. In the mobile segments adjacent to the site of previous spinal fusion, the authors observed progressive destructive changes with significant instability in four patients (40%) who underwent circumferential spinal fusion. No patients required a second surgery after laminoplasty for spinal canal stenosis without DSA changes. Conclusions Cervical PS-assisted reconstruction provided an excellent fusion rate and good spinal alignment. During the long-term follow-up period, however, some cases required extension of the spinal fusion due to the destructive changes in the adjacent vertebral levels. Guidelines or recommendations to overcome these problems should be produced to further increase the survival rates of patients undergoing hemodialysis.


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