In addition, the trial titled Therapeutic efficacy of facet joint blocks led by Gorbach et al., although it had fewer patients, showed that 31 patients 74% improved their condition immediately after facet blocking and 14 patients 33% showed medium-term improvement.
Adicionalmente, el estudio «Therapeutic efficacy of facet joint blocks» dirigido por Gorbach et al., con menos cantidad de pacientes, mostró que 31 de ellos 74% mejoraron de la sintomatología inmediatamente después del bloqueo y 14 pacientes 33% mejoraron a mediano plazo.