Clinical Research Directory

Rate of Bone Union After Surgery With Stand-alone Fibergraft

Some people have back problems caused by degenerative conditions or instability of the spine (eg. Spondylolisthesis). These problems can lead to pain, nerve issues, or difficulties in walking. A common treatment is a type of back surgery called lumbar interbody fusion, which helps stabilize the spine. At the St. Maartenskliniek in the Netherlands, doctors have been using a special material called Fibergraft Bioactive Glass Putty for such surgeries since 2023. This material helps bones grow and heal, and it's placed inside the spine without needing extra bone from another part of the body. This study will look at how well this material works by evaluating how many patients' bones successfully healed after surgery using this material. It will also look at how patients feel and recover after the procedure

Validation of the Single-item Sleep Quality Scale

The single-item sleep quality scale (SQS) allows patients to provide a self-assessment of sleep quality over a 7-day recall period without significant additional burden. However, the SQS has not yet been utilized or validated in patients with spine pathologies. The main purpose of this study is to cross-culturally adapt the SQS from English to German and Italian and to test its validity in patients with back disorders. The study will be conducted in two stages. The first stage will involve the translation and cross-cultural adaptation of the SQS from English to German and Italian. The second stage will involve the evaluation of the instrument's face, content, and construct validity, reproducibility, and responsiveness in patients with back disorders.