RESUMO
OBJECTIVE: To study the surgical outcome of outpatient percutaneous microdecompressive endoscopic cervical discectomy with lower energy laser for shrinkage of disc material (thermodiskoplasty). METHOD: Since 1994, 200 patients with herniated cervical discs have presented at the authors' clinic, with unilateral radicular pain. The diagnosis was confirmed by MRI or CT, and EMG. RESULTS: At an average follow-up of 25 months, 94.5% of the cases had good-to-excellent results. Eleven patients (5.5%) remained symptomatic, with persistent neck and upper extremity pain associated with paresthesias. There were no significant postoperative complications. Average time before returning to work was 10 days. CONCLUSIONS: Percutaneous microdecompressive endoscopic cervical discectomy with laser thermodiskoplasty has proven to be a safe and efficacious minimally invasive procedure.
Assuntos
Vértebras Cervicais , Descompressão Cirúrgica/métodos , Discotomia Percutânea/instrumentação , Endoscopia , Deslocamento do Disco Intervertebral/cirurgia , Terapia a Laser/métodos , Adulto , Idoso , Humanos , Deslocamento do Disco Intervertebral/diagnóstico , Pessoa de Meia-Idade , Estudos RetrospectivosAssuntos
Artéria Carótida Primitiva/metabolismo , Lidocaína/farmacocinética , Absorção , Animais , CãesRESUMO
We design, implement, and test a multichannel photorefractive optical joint transform correlator that is capable of performing sorting tasks for robotic applications. The use of mini-YAG lasers and liquid-crystal spatial light modulators, in conjunction with updatable holographic BSO crystals, results in a compact correlator (600 mm x 300 mm x 300 mm) with real-time capabilities (100-ms recognition speed). Flexibility is a built-in feature, and correlation is demonstrated for various applications. Electronic and optical preprocessing and postprocessing for improving demonstrator performances are also discussed.
