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3.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 58(1): 19-23, ene.-feb. 2014. tab, ilus
Article in Spanish | IBECS | ID: ibc-118586

ABSTRACT

Objetivos. Evaluar la utilidad de la resonancia magnética (RM) tomada en 20° de flexión de rodilla en el diagnóstico del dolor patelofemoral (DPF) causado por mal alineamiento patelar (MAP). Material y método. Se realizaron 25 RM en pacientes con DPF en los cuales se sospechó de MAP como causa y 25 en pacientes sin DPF (grupo control). Se midieron: distancia surco intertroclear-tuberosidad anterior tibial (SIT-TAT) y los ángulos de: Laurin modificado, Merchant y Troclear. Análisis estadístico con los test de ANOVA, Fischer y Pearson. Resultados. Hubo diferencias significativas entre los pacientes con DPF vs. grupo control en relación a: distancia SIT-TAT (11,79 mm vs. 9,35 mm, p = 0,002), ángulo de Laurin modificado (12,17° vs. 15,56°, p = 0,05) y ángulo Troclear (139° vs. 130,02°, p = 0,049). Respecto al ángulo de Merchant no hubo diferencias significativas. La distancia SIT-TAT tuvo un valor predictivo positivo (VPP) del 70% para DPF, con una sensibilidad del 51,61% y una especificidad del 53,33%. El ángulo de Laurin modificado tuvo un VPP del 77,78% para DPF, con una sensibilidad del 28% y una especificidad del 92%. El ángulo Troclear tuvo un VPP del 85,71% para DPF, con una sensibilidad del 24% y una especificidad del 96%. Conclusiones. La RM en 20° de flexión puede confirmar el MAP como causa de DPF. La determinación de alteraciones de la distancia SIT-TAT, báscula patelar y ángulo Troclear se correlaciona positivamente con la presencia del DPF, sugiriendo que este es causado por un mal alineamiento leve (AU)


Objectives. The aim of this study is to evaluate the usefulness of Magnetic Resonance Imaging (MRI) at 20° of knee flexion in patients with patellofemoral pain syndrome (PFPS) caused by suspected patellofemoral malalignment (PFM). Material and method. Fifty MRIs were performed on 25 patients with PFPS secondary to suspected PFM based on clinical examination, and on 25 patients without PFPS (control group). Measurements were made of tibial tuberosity-trochlear groove distance (TTTG) and modified Laurin, Merchant and trochlear angles. The results were analyzed with ANOVA and Fischer tests. Pearson correlation coefficients were used to analyze differences between PFPS and control cases. Specificity, sensitivity, positive predictive value and negative predictive value for knee pain were documented. Results. Significant differences were observed between PFPS and control groups in TTTG (11.79 mm vs. 9.35 mm; P=.002), Laurin angle (12.17° vs. 15.56°; P=.05), and trochlear angle (139° vs. 130.02°; P=.049). No differences were found between groups as regards the Merchant angle (P=.5). TTTG was 70% predictive of PFPS; however, it was only 53.33% specific, with a sensitivity of 51.61% for PFPS. Laurin angle was 77.78% predictive of PFPS, with a specificity of 92% and a sensitivity of 28%. Trochlear angle was 85.71% predictive of PFPS, with a specificity of 96% and a sensitivity of 24%. Conclusions. MRI can confirm clinically suspected PFPS secondary to malalignment. MRI determination of TTTG, patellar tilt, and trochlear angle correlates positively with clinical diagnosis of PFPS, suggesting that PFPS is caused by subtle malalignment (AU)


Subject(s)
Humans , Male , Female , Adult , Patellar Ligament/pathology , Patellar Ligament , Chondromalacia Patellae/complications , Chondromalacia Patellae , Magnetic Resonance Imaging/methods , Magnetic Resonance Spectroscopy/methods , Patellar Ligament/injuries , Patellar Dislocation , Patellofemoral Pain Syndrome , Patellofemoral Joint , Analysis of Variance , Patellar Dislocation/physiopathology , Patellar Dislocation/surgery
4.
Rev Esp Cir Ortop Traumatol ; 58(1): 19-23, 2014.
Article in Spanish | MEDLINE | ID: mdl-24331742

ABSTRACT

OBJECTIVES: The aim of this study is to evaluate the usefulness of Magnetic Resonance Imaging (MRI) at 20° of knee flexion in patients with patellofemoral pain syndrome (PFPS) caused by suspected patellofemoral malalignment (PFM). MATERIAL AND METHOD: Fifty MRIs were performed on 25 patients with PFPS secondary to suspected PFM based on clinical examination, and on 25 patients without PFPS (control group). Measurements were made of tibial tuberosity-trochlear groove distance (TTTG) and modified Laurin, Merchant and trochlear angles. The results were analyzed with ANOVA and Fischer tests. Pearson correlation coefficients were used to analyze differences between PFPS and control cases. Specificity, sensitivity, positive predictive value and negative predictive value for knee pain were documented. RESULTS: Significant differences were observed between PFPS and control groups in TTTG (11.79 mm vs. 9.35 mm; P=.002), Laurin angle (12.17° vs. 15.56°; P=.05), and trochlear angle (139° vs. 130.02°; P=.049). No differences were found between groups as regards the Merchant angle (P=.5). TTTG was 70% predictive of PFPS; however, it was only 53.33% specific, with a sensitivity of 51.61% for PFPS. Laurin angle was 77.78% predictive of PFPS, with a specificity of 92% and a sensitivity of 28%. Trochlear angle was 85.71% predictive of PFPS, with a specificity of 96% and a sensitivity of 24%. CONCLUSIONS: MRI can confirm clinically suspected PFPS secondary to malalignment. MRI determination of TTTG, patellar tilt, and trochlear angle correlates positively with clinical diagnosis of PFPS, suggesting that PFPS is caused by subtle malalignment.


Subject(s)
Bone Malalignment/complications , Bone Malalignment/diagnosis , Magnetic Resonance Imaging , Patella , Patellofemoral Pain Syndrome/etiology , Adolescent , Adult , Female , Humans , Male , Middle Aged , Young Adult
5.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 55(4): 277-281, jul.-ago. 2011.
Article in Spanish | IBECS | ID: ibc-89766

ABSTRACT

Introducción. En roturas parciales del ligamento cruzado anterior (LCA) no existe consenso en relación a la mejor opción de tratamiento. El uso de radiofrecuencia (RF) es una alternativa empleada actualmente. Este tratamiento puede alterar negativamente la resistencia del LCA. Objetivo. Evaluar punto de fallo a carga máxima (PFCM) de muestras de LCA porcinos con lesiones parciales tratados con RF en haz indemne. Métodos. Se estudian dos grupos (N=40); A control y B tratada con RF. Fijamos muestras en equipo de tracción universal PASCO(R) y aplicamos tracción axial continua hasta fallo, registrando fuerza en Newtons (N) necesaria para PFCM. Resultados. PFCM fue A: 1951,9N (1144-2688) y B: 1457,1N (1070-2025) (p <= 0,001). Conclusión. El uso de RF de manera puntual en el haz indemne de secciones del fascículo PL del LCA porcino disminuye el PFCM en forma significativa respecto de las secciones del fascículo PL del LCA porcino sin tratamiento (AU)


Introduction. There is no consensus on the optimal treatment of partial tears in the anterior cruciate ligaments (ACL). Radiofrequency (RF) has been used to treat ACL partial tears. This treatment can be detrimental to ACL strength. Objective. To evaluate the ultimate failure at maximum load (UFML) of porcine ACL with partial tears. Methods. Two groups were evaluated, N=40, A control and B treated with RF. Samples were placed in a PASCO(R) universal traction machine and axial continuous tension was applied until failure; documenting necessary strength in Newtons (N) to produce UFML. Results. UFML for A: 1951,9N (1144-2688) and B: 1457,1N (1070-2025) (P<=.001). Conclusion. RF use for single bundle ACL partial tears treatment compromises the UFML when compared to single bundle ACL parcial tears without RF (AU)


Subject(s)
Animals , Male , Female , Swine/injuries , Swine/surgery , /veterinary , Anterior Cruciate Ligament/injuries , Anterior Cruciate Ligament/surgery , Knee Injuries/surgery , Knee Injuries/veterinary , 28599 , Confidence Intervals
6.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 55(1): 2-8, ene.-feb. 2011. tab, ilus
Article in Spanish | IBECS | ID: ibc-84906

ABSTRACT

Objetivo. Describir correlación entre largo y ancho del tendón semitendinoso (ST) con peso, talla y edad en la población hispana. Método. Estudio prospectivo de una serie consecutiva de 61 pacientes sometidos a reconstrucción del ligamento cruzado anterior (LCA) con tendones semitendinoso y gracilis; 40 varones (67,2%) y 21 mujeres (32,8%). La edad media fue de 28,3±10,2 años (17-55). En pabellón se midieron el largo del ST y el diámetro del ST cuádruple (ST4). Se correlacionaron los hallazgos con peso, talla y edad, agrupando y separando por género, y se documentaron las diferencias entre variables. Resultados. El diámetro medio del ST4 fue de 9,0±1,3mm, siendo en pacientes masculinos de 9,3±0,8mm y en pacientes de sexo femenino de 8,3±0,6mm (p<0,05). La longitud media del ST fue de 28,1±3,4cm, siendo en pacientes masculinos de 28,5±2,3cm y en pacientes de sexo femenino de 26,0±2,5cm (p<0,05). El peso se correlacionó positivamente con el largo ST (0,47, p<0,001) y el diámetro ST4 (0,51, p<0,001). Asimismo la talla del paciente se correlacionó positivamente con el largo ST (0,57, p<0,001) y diámetro ST4 (0,34, p=0,008). No se encontró correlación significativa entre la edad de los pacientes y las medidas del tendón estudiadas. Conclusión. En el grupo general de pacientes estudiado existía una correlación positiva entre la longitud del ST con talla y peso del paciente. Asimismo, se objetivaba una correlación positiva entre el diámetro del ST4 con talla y peso del paciente(AU)


Objective. To describe the correlation between the length and diameter of semitendinosus tendon (ST), and weight, height and age in Hispanic population. Methods. Prospective study of a consecutive series of 61 patients that underwent anterior cruciate ligament (ACL) reconstruction with hamstrings; 40 (67.2%) males and 21 (32.8%) females. The average age was 28.3±10.2 years (range 17-55). In the operating room, length and diameter of ST folded in four bundles (ST4) were measured. Correlations were calculated using patient weight, height and age, including males and females and separating them by gender. Results. Mean ST4 diameter: 9.0±1,3mm. Males ST4 diameter: 9.3±0.8mm; females ST4 diameter 8.3±0.6mm (p<0.05). Average ST length: 28.1±3.4cm. Males mean length 28.5±2.3cm; females mean length 26.0±2.5cm (p<0.05). Weight was correlated directly with ST length (c=0.47; p<0.001) and ST4 diameter (c=0.51; p<0.001). Patient height was directly correlated with ST length (c=0.57; p<0.001) and ST4 diameter (c=0.34; p=0.008). There was no correlation between patient age and tendon measurements. Conclusion. A positive correlation was found between ST length and patient weight and height for the general population. A direct correlation was also observed between ST4 diameter and patient weight and height for the general population (AU)


Subject(s)
Humans , Male , Female , Adult , Weight by Height/physiology , Tissue Transplantation/physiology , Tissue Transplantation/trends , Transplantation, Autologous/methods , Prospective Studies , 28599 , Analysis of Variance
7.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 54(2): 111-115, mar.-abr. 2010. tab, ilus
Article in Spanish | IBECS | ID: ibc-78258

ABSTRACT

Introducción: El objetivo del presente estudio es analizar a los pacientes que reciben sutura meniscal con tornillos absorbibles y las características de las lesiones. Pacientes y metodología: Evaluación clínica prospectiva de una serie consecutiva de 35 pacientes con lesiones meniscales tratadas solamente con tornillos absorbibles durante 8 años. Evaluamos la evolución con los criterios de Barrett, la escala Lysholm, el International Knee Documentation Committee (IKDC) y Tegner. El seguimiento medio fue de 35 meses y la edad de 26 años; el 73% de pacientes varones. Un 62% de los pacientes presentó asociada una rotura del ligamento cruzado anterior reconstruida en el mismo acto quirúrgico. Se colocaron 1,8 tornillos por paciente. Un 62,9% de las suturas fueron en el menisco interno y el 37,14% en el menisco externo. El 69% de los tornillos se colocó en el cuerno posterior, el 21% en el tercio medio y el cuerno posterior, el 8% en el tercio medio y el 2% en el cuerno anterior, el tercio medio y el cuerno posterior. Resultados: El porcentaje de rerrotura confirmado con resonancia magnética fue del 10%. Las puntuaciones postoperatorias fueron Lysholm de 95,9 puntos, IKDC de 90,8 puntos y Tegner de 6,09 puntos. Conclusiones: La reparación meniscal con tornillos reabsorbibles ofrece de buenos a excelentes resultados clínicos en un alto porcentaje de casos (AU)


The purpose of the present study is to analyze the results obtained by patients subjected to meniscal suturing with absorbable screws as well as the characteristics of the meniscal lesions present. Patients and methodology: This is a prospective clinical assessment of a consecutive series of 35 patients with meniscal lesions treated exclusively with absorbable screws over an 8 year period. We assessed patient evolution on the basis of the Barrett, Lysholm, IKDC and Tegner rating scales. Mean follow-up was 35 months and mean age 26 years. 73% of our patients were male; 62% of patients presented with a tear in their anterior cruciate ligament, which was reconstructed during the same surgical procedure. 1.8 screws were placed in each patient. 62.9% of sutures were applied in the medial meniscus and 37.14% in the lateral meniscus. 69% of the screws were placed in the posterior horn, 21% in the middle third and the posterior horn, 8% in the middle third and 2% in the anterior horn, middle third and posterior horn. Results: The percentage of retears confirmed by MRi was 10%. Post-operative scores were: Lysholm 95.9 points, IKDC 90.8 and Tegner 6.09 points. Conclusions: Meniscal repair with resorbable screws offers good to excellent clinical results in a high proportion of cases (AU)


Subject(s)
Humans , Male , Female , Adult , Bone Screws , Menisci, Tibial/injuries , Menisci, Tibial/surgery , Femoral Fractures/surgery , Prospective Studies , Sutures , Suture Techniques
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