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Permanent URI for this collectionhttps://hdl.handle.net/11443/932

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Author: search.filters.author.Kleinstuck, FrankHas files: Yes

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    Adult Spinal Deformity Over 70 Years of Age: A 2-Year Follow-Up Study
    (INT SOC ADVANCEMENT SPINE SURGERY-ISASS, 2019-01-01) Karabulut, Cem; Ayhan, Selim; Yuksel, Selcen; Nabiyev, Vugar; Vila-Casademunt, Alba; Pellise, Ferran; Alanay, Ahmet; Sanchez Perez-Grueso, Francisco Javier; Kleinstuck, Frank; Obeid, Ibrahim; Acaroglu, Emre; Grp, European Spine Study
    Background: Treatment of adult spinal deformity (ASD) in elderly patients remains controversial. The aim of this study was to identify the factors leading to the surgical treatment by comparing the baseline characteristics of operative versus nonoperative patients, to evaluate the safety and efficacy of surgery, and to compare operative and nonoperative management of elderly ASD patients at the end of the 2-year follow-up period. Methods: Retrospective review of a multicenter, prospective ASD database was performed. Patients over 70 years of age with ASD who were scheduled to undergo surgical treatment and who were treated and/or followed without surgical intervention participated in the study. Demographic, clinical, surgical, and radiological characteristics and health-related quality-of-life (HRQOL) (Core Outcome Measures Index {[}COMI], Oswestry Disability Index {[}ODI], Short-Form-36 Mental Component Summary {[}SF-36 MCS], Short-Form-36 Physical Component Summary {[}SF36-PCS], and Scoliosis Research Society-22 {[}SRS-22]) parameters of such group of patients were evaluated pre-and posttreatment. Results: A total 90 patients (females: 71, males: 29
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    Association between sagittal alignment and loads at the adjacent segment in the fused spine: a combined clinical and musculoskeletal modeling study of 205 patients with adult spinal deformity
    (SPRINGER, 2022-01-01) Ignasiak, Dominika; Behm, Pascal; Mannion, Anne F.; Galbusera, Fabio; Kleinstuck, Frank; Fekete, Tamas F.; Haschtmann, Daniel; Jeszenszky, Dezso; Zimmermann, Laura; Richner-Wunderlin, Sarah; Vila-Casademunt, Alba; Pellise, Ferran; Obeid, Ibrahim; Pizones, Javier; Sanchez Perez-Grueso, Francisco J.; Karaman, Muhammed Ilkay; Alanay, Ahmet; Yilgor, Caglar; Ferguson, Stephen J.; Loibl, Markus
    PurposeSagittal malalignment is a risk factor for mechanical complications after surgery for adult spinal deformity (ASD). Spinal loads, modulated by sagittal alignment, may explain this relationship. The aims of this study were to investigate the relationships between: (1) postoperative changes in loads at the proximal segment and realignment, and (2) absolute postoperative loads and postoperative alignment measures. MethodsA previously validated musculoskeletal model of the whole spine was applied to study a clinical sample of 205 patients with ASD. Based on clinical and radiographic data, pre-and postoperative patient-specific alignments were simulated to predict loads at the proximal segment adjacent to the spinal fusion. ResultsWeak-to-moderate associations were found between pre-to-postop changes in lumbar lordosis, LL (r = - 0.23, r = - 0.43
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    Analysis of factors affecting baseline SF-36 Mental Component Summary in Adult Spinal Deformity and its impact on surgical outcomes
    (TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2018-01-01) Mmopelwa, Tiro; Ayhan, Selim; Yuksel, Selcen; Nabiyev, Vugar; Niyazi, Asli; Pellise, Ferran; Alanay, Ahmet; Perez Grueso, Francisco Javier Sanchez; Kleinstuck, Frank; Obeid, Ibrahim; Acaroglu, Emre; Grp, European Spine Study
    Objectives: To identify the factors that affect SF-36 mental component summary (MCS) in patients with adult spinal deformity (ASD) at the time of presentation, and to analyse the effect of SF-36 MCS on clinical outcomes in surgically treated patients. Methods: Prospectively collected data from a multicentric ASD database was analysed for baseline parameters. Then, the same database for surgically treated patients with a minimum of 1-year follow-up was analysed to see the effect of baseline SF-36 MCS on treatment results. A clinically useful SF-36 MCS was determined by ROC Curve analysis. Results: A total of 229 patients with the baseline parameters were analysed. A strong correlation between SF-36 MCS and SRS-22, ODI, gender, and diagnosis were found (p < 0.05). For the second part of the study, a total of 186 surgically treated patients were analysed. Only for SF-36 PCS, the un-improved cohort based on minimum clinically important differences had significantly lower mean baseline SF-36 MCS (p < 0.001). SF-36 MCS was found to have an odds ratio of 0.914 in improving SF-36 PCS score (unit by unit) (p < 0.001). A cut-off point of 43.97 for SF-36 MCS was found to be predictive of SF-36 PCS (AUC = 0.631
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    Adult Congenital Spine Deformity: Clinical Features and Motivations for Surgical Treatment
    (INT SOC ADVANCEMENT SPINE SURGERY-ISASS, 2021-01-01) Pizones, Javier; Moreno-Manzanaro, Lucia; Vila-Casademunt, Alba; Fernandez-Baillo, Nicomedes; Sanchez-Marquez, Jose; Talavera, Gloria; Obeid, Ibrahim; Alanay, Ahmet; Kleinstuck, Frank; Pellise, Ferran; Sanchez Perez-Grueso, Francisco Javier; ESSG
    Background: There is scarce information available about adult congenital spine deformity (ACSD) in the literature, especially its impact after the pediatric age. The aim was to define ACSD characteristics and to establish the drivers for surgical intervention. Methods: Cross-sectional study of data collected in an adult deformity multicenter database. Only ACSD patients were included. Demographic and radiographic data, as well as patient-reported outcome measures, were assessed. Conservatively (C) vs surgically (S) treated patients were compared using Student t test, chi(2), and Mann-Whitney U test. Results: Fifty-two patients were included. They were young adults (x = 37.7 years), mostly female (71\%). Among them. 60\% had single hemivertebrae (HV), 35\% had multiple HV, and 5\% had segmentation defects. Also. 75\% had mainly corona' deformity (Cobb 625 degrees +/- 29.6) and 25\% had sagittal deformity. Mean Oswestry Disability Index (ODI) was 29.6\% +/- 17 and mean Scoliosis Research Society 22-item survey (SRS-22) total score was 3.2 +/- 0.8. Of note, mean SRS-22 self-image score was 2.8 +/- 0.9 and 36-item Short Form Health Survey (SF-36) physical function score was 40.9 +/- 11. Thirty patients were treated conservatively (C), whereas 22 patients underwent surgery (S). No differences were found regarding age, type or location of the deformity, comorbidities, or radiographic parameters. Operated patients had worse Core Outcome Measurement Index (COMI) back scores (C: 3.8 +/- 2.4 vs S: 6.7 +/- 2.4