Browsing by Author "Campos, M."
Now showing 1 - 10 of 10
Results Per Page
Sort Options
- ItemAn Independent Inter- and Intraobserver Agreement Evaluation of the AOSpine Subaxial Cervical Spine Injury Classification System(2017) Urrutia Escobar, Julio Octavio; Zamora Helo, Tomás; Yurac, Ratko; Campos, M.; Palma Munita, Joaquín Hernán
- ItemDo thoraco-lumbar spinal injuries classification systems exhibit lower inter- and intra-observer agreement than other fractures classifications?: A comparison using fractures of the trochanteric area of the proximal femur as contrast model(2016) Urrutia Escobar, Julio Octavio; Zamora, T.; Klaber Rosenberg, Ianiv; Carmona, M.; Palma, J.; Campos, M.; Yurac, R.Introduction It has been postulated that the complex patterns of spinal injuries have prevented adequate agreement using thoraco-lumbar spinal injuries (TLSI) classifications; however, limb fracture classifications have also shown variable agreements. This study compared agreement using two TLSI classifications with agreement using two classifications of fractures of the trochanteric area of the proximal femur (FTAPF). Material and methods Six evaluators classified the radiographs and computed tomography scans of 70 patients with acute TLSI using the Denis and the new AO Spine thoraco-lumbar injury classifications. Additionally, six evaluators classified the radiographs of 70 patients with FTAPF using the Tronzo and the AO schemes. Six weeks later, all cases were presented in a random sequence for repeat assessment. The Kappa coefficient (κ) was used to determine agreement. Results Inter-observer agreement: For TLSI, using the AOSpine classification, the mean κ was 0.62 (0.57–0.66) considering fracture types, and 0.55 (0.52–0.57) considering sub-types; using the Denis classification, κ was 0.62 (0.59–0.65). For FTAPF, with the AO scheme, the mean κ was 0.58 (0.54–0.63) considering fracture types and 0.31 (0.28–0.33) considering sub-types; for the Tronzo classification, κ was 0.54 (0.50–0.57). Intra-observer agreement: For TLSI, using the AOSpine scheme, the mean κ was 0.77 (0.72–0.83) considering fracture types, and 0.71 (0.67–0.76) considering sub-types; for the Denis classification, κ was 0.76 (0.71–0.81). For FTAPF, with the AO scheme, the mean κ was 0.75 (0.69–0.81) considering fracture types and 0.45 (0.39–0.51) considering sub-types; for the Tronzo classification, κ was 0.64 (0.58–0.70). Conclusion Using the main types of AO classifications, inter- and intra-observer agreement of TLSI were comparable to agreement evaluating FTAPF; including sub-types, inter- and intra-observer agreement evaluating TLSI were significantly better than assessing FTAPF. Inter- and intra-observer agreements using the Denis classification were also significantly better than agreement using the Tronzo scheme. Introduction It has been postulated that the complex patterns of spinal injuries have prevented adequate agreement using thoraco-lumbar spinal injuries (TLSI) classifications; however, limb fracture classifications have also shown variable agreements. This study compared agreement using two TLSI classifications with agreement using two classifications of fractures of the trochanteric area of the proximal femur (FTAPF). Material and methods Six evaluators classified the radiographs and computed tomography scans of 70 patients with acute TLSI using the Denis and the new AO Spine thoraco-lumbar injury classifications. Additionally, six evaluators classified the radiographs of 70 patients with FTAPF using the Tronzo and the AO schemes. Six weeks later, all cases were presented in a random sequence for repeat assessment. The Kappa coefficient (κ) was used to determine agreement. Results Inter-observer agreement: For TLSI, using the AOSpine classification, the mean κ was 0.62 (0.57–0.66) considering fracture types, and 0.55 (0.52–0.57) considering sub-types; using the Denis classification, κ was 0.62 (0.59–0.65). For FTAPF, with the AO scheme, the mean κ was 0.58 (0.54–0.63) considering fracture types and 0.31 (0.28–0.33) considering sub-types; for the Tronzo classification, κ was 0.54 (0.50–0.57). Intra-observer agreement: For TLSI, using the AOSpine scheme, the mean κ was 0.77 (0.72–0.83) considering fracture types, and 0.71 (0.67–0.76) considering sub-types; for the Denis classification, κ was 0.76 (0.71–0.81). For FTAPF, with the AO scheme, the mean κ was 0.75 (0.69–0.81) considering fracture types and 0.45 (0.39–0.51) considering sub-types; for the Tronzo classification, κ was 0.64 (0.58–0.70). Conclusion Using the main types of AO classifications, inter- and intra-observer agreement of TLSI were comparable to agreement evaluating FTAPF; including sub-types, inter- and intra-observer agreement evaluating TLSI were significantly better than assessing FTAPF. Inter- and intra-observer agreements using the Denis classification were also significantly better than agreement using the Tronzo scheme.
- ItemEffect of Propionibacterium acnes (PA) injection on intervertebral disc degeneration in a rat model : does it mimic modic changes?(2017) Zamora Helo, Tomás; Palma, J.; Andía Kohnenkampf, Marcelo Edgardo; García Cañete, Patricia; Wozniak Banchero, Aniela; Solar González, Antonieta Alejandra; Campos, M.
- ItemEffet de l’injection de Propionibacterium acnes (PA) sur la dégénérescence dans un modèle de rat(2017) Zamora Helo, Tomás; Palma, J.; Andía Kohnenkampf, Marcelo Edgardo; García Cañete, Patricia; Wozniak Banchero, Aniela; Solar González, Antonieta Alejandra; Campos, M.
- ItemFamily planning in the Chilean cold war : Health policy and international cooperation, 1960-1973(2015) Campos, M.; González Moya, Maricela
- ItemNADPH oxidase activity: Spectrophotometric determination of superoxide using pyrogallol red(2017) Cortes, J.; Torres, M.; Campos, M.; Romero, J.; Letelier, M.; Pessoa Mahana, Carlos David; Chung, H.; Faundez, Mario
- ItemOcular trauma by kinetic impact projectiles during civil unrest in Chile(2020) Rodríguez, Á.; Peña, S.; Cavieres, I.; Vergara, M. J.; Pérez, M.; Campos, M.; Peredo, D.; Jorquera, P.; Palma Vásquez, Ramón Eduardo; Cortés Novoa, Dennis Enrique; López, M.; Morales Silva, Susana
- ItemPediatric liver transplantation experience and outcome in Chile(2013) Acuña, C.; Zuleta, R.; Dalmazzo, R.; Valverde, C.; Uribe, M.; Alba, A.; Buckel, E.; Hunter, B.; González, G.; Godoy, J.; Ferrario, M.; Cavallieri, S.; Campos, M.; Pizarro, F.; Wash, A.; Ferrón, S.; Díaz, V.; Macho, L.; Herzog, C.; Calabrán, L.; Flores, L.; Soto, P.; Heine, C.; Rebolledo Acevedo, Rolando Arturo; Auad, H.
- ItemPrenatal nicotine exposure enhances Cx43 and Panx1 unopposed channel activity in brain cells of adult offspring mice fed a high-fat/cholesterol diet(2014) Orellana Roca, Juan Andrés; Busso, Dolores; Ramírez, G.; Campos, M.; Rigotti Rivera, Attilio; Eugenin. J.; Bernhardi Montgomery, Rommy von
- ItemThe Pfirrmann classification of lumbar intervertebral disc degeneration : an independent inter- and intra-observer agreement assessment(2016) Urrutia Escobar, Julio Octavio; Besa, P.; Campos, M.; Cikutovic, P.; Cabezón, M.; Molina, M.; Cruz, Juan Pablo