Aspectos clínicos de pacientes com lesão traumática do plexo braquial após tratamento cirúrgico / Clinical aspects of patients with traumatic lesions of the brachial plexus following surgical treatment

RESUMO

Objetivo: Avaliar aspectos sociodemográficos e clínicos de pacientes operados de lesão trau mática do plexo braquial (LTPB). Método: Estudo retrospectivo, revisão de prontuários, amostra de conveniência, 48 pacientes operados entre 2000 e 2010. Avaliados: 1) ADM - em graus, do ombro, cotovelo e punho/mão; 2) grau de força do ombro, cotovelo e punho/mão; 3) sensibilidade; 4) EVA (0 a 10). Testes de t de Student, qui-quadrado, Friedman, Wilcoxon e Kruskal-Wallis (p<0,05). Resultados: Idade de 30,6 anos, 60,4% acidentes motociclísticos. Politraumatismo 52,1%. Tempo até a cirurgia de 8,7 meses (2 a 48). Trinta e um (64,6%) com lesão total do plexo. Cirurgias mais frequentes: neurais em 39 (81,3%). ADM > 30° do ombro 20 pacientes (41,6%) de 30° a 90°, média 73° (p = 0,001); 13 (27,1%) já tinham força no ombro > M3 (p = 0,001). Coto velo >80° de flexão, 27 pacientes (56,2%) de 30° a 160°, com média de 80,6° (p< 0,001); 22 com força > M3 (p < 0,001). Extensão do punho > 30° partindo de 45° de flexão em 22 paci entes (45,8%), de 30° a 90°, média 70° (p = 0,003); 27 (56,3%) tinham força de extensão do punho/mão >M3 (p = 0,002); 45 (93,8%) hipoestesia e três (6,2%) anestesia (p = 0,006). EVA inicial 4,5 (1 a 9) e EVA final 3 (1 a 7) (p < 0,001). Conclusão: As LTPB tem maior prevalência em jovens (21-40 anos), homens, urbanos, traba lhadores braçais, acidentes motociclísticos, com politrauma, lesão total do plexo. Cirurgias neurais, seguidas em segundo tempo, pelas transferências miotendíneas. A cirurgia para LTPB mostrou melhoria significativa de ADM e força em ombro, cotovelo e punho/mão, da sensibilidade do membro afetado e diminuição da dor final.

ABSTRACT

To evaluate sociodemographic and clinical aspects of patients undergoing operations due to traumatic lesions of the brachial plexus. METHOD: This was a retrospective study in which the medical files of a convenience sample of 48 patients operated between 2000 and 2010 were reviewed. The following were evaluated: (1) range of motion (ROM) of the shoulder, elbow and wrist/hand, in degrees; (2) grade of strength of the shoulder, elbow and wrist/hand; (3) sensitivity; and (4) visual analogue scale (VAS) (from 0 to 10). The Student's t, chi-square, Friedman, Wilcoxon and Kruskal-Wallis tests were used (p < 0.05). RESULTS: The patients' mean age was 30.6 years; 60.4% of them had suffered motorcycle accidents and 52.1%, multiple trauma. The mean length of time until surgery was 8.7 months (range: 2-48). Thirty-one patients (64.6%) presented complete rupture of the plexus. The frequent operation was neurosurgery in 39 cases (81.3%). The ROM achieved was ≥30° in 20 patients (41.6%), with a range from 30° to 90° and mean of 73° (p = 0.001). Thirteen (27.1%) already had shoulder strength ≥M3 (p = 0.001). Twenty-seven patients (56.2%) had elbow flexion ≥80°, with a range from 30° to 160° and mean of 80.6° (p < 0.001). Twenty-two had strength ≥M3 (p < 0.001). Twenty-two patients (45.8%) had wrist extension ≥30° starting from flexion of 45°, with a range from 30° to 90° and mean of 70° (p = 0.003). Twenty-seven (56.3%) presented wrist/hand extension strength ≥M3 (p = 0.002). Forty-five (93.8%) had hypoesthesia and three (6.2%) had anesthesia (p = 0.006). The initial VAS was 4.5 (range: 1.0-9.0) and the final VAS was 3.0 (range: 1.0-7.0) (p < 0.001). CONCLUSION: Traumatic lesions of the brachial plexus were more prevalent among young adults (21-40 years), men, people living in urban areas, manual workers and motorcycle accidents, with multiple trauma and total rupture of the plexus. Neurosurgery, with a second procedure consisting of muscle-tendon transfer, was the commonest operation. Surgery for traumatic lesions of the brachial plexus resulted in significant improvement in the ROM and strength of the shoulder, elbow and wrist/hand, improvement of the sensitivity of the limb affected and reduction of the final pain.