摘要:Purpose. The Device for Intervertebral Assisted Motion (DIAM™) is a method that has been recently applied for the operative treatment of low back pain. The aim of this study was to assess the quality of life in patients with low back pain during the course of a single-level discopathy performed using the DIAM™ system, who previously had not undergone any surgical procedure within the lumbar spine. Methods. The study group consisted of 23 selected patients (15 women and 8 men) with a mean age of 47 years. All subjects underwent single-level fenestration with discectomy and DIAM™ system implantation. The level of pain and disability at rest and movement were evaluated at baseline (pre-surgery) and at 6 months after surgery. All patients underwent a post-operative rehabilitation programme. Patients were evaluated using a Visual Analogue Scale (VAS) –pain’s level at rest and movement, a modified Oswestry Disability Index (ODI) and the Melzack Pain Questionnaire (MPQ). Results. Pain’s level reduction was observed in 78% of patients at rest and in 88% of patients at movement. 79% of patients presented an improvement in their ODI score, but disability still persisted in pain intensity and during lifting. All MPQ indicators also improved, but mostly in the psychological dimensions of pain. Conclusions. It was found that during the 6 months following a single-level DIAM™ implantation a greater decrease in pain at rest than at movement was recorded.