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BACKGROUND Citation analysis has become an important tool for research performance assessment in the medical sciences. However, different areas of medical research may have considerably different citation practices, even within the same medical field. Because of this, it is unclear to what extent citation-based bibliometric indicators allow for valid(More)
OBJECTIVE This study describes the 5 years' results of the Sciatica trial focused on pain, disability, (un)satisfactory recovery and predictors for unsatisfactory recovery. DESIGN A randomised controlled trial. SETTING Nine Dutch hospitals. PARTICIPANTS Five years' follow-up data from 231 of 283 patients (82%) were collected. INTERVENTION Early(More)
The objective of this study is to evaluate the effectiveness and safety of total disc replacement surgery compared with spinal fusion in patients with symptomatic lumbar disc degeneration. Low back pain (LBP), a major health problem in Western countries, can be caused by a variety of pathologies, one of which is degenerative disc disease (DDD). When(More)
BACKGROUND Open discectomy is the standard surgical procedure in the treatment of patients with long-lasting sciatica caused by lumbar disc herniation. Minimally invasive approaches such as microendoscopic discectomy have gained attention in recent years. Reduced tissue trauma allows early ambulation, short hospital stay and quick resumption of daily(More)
To retrospectively study the long-term outcome of patients after anterior cervical discectomy without fusion (ACD) compared to results published on the long-term outcome after ACD with fusion (ACDF). We reviewed the charts of all patients receiving ACD surgery between 1985 and 2000 to analyze the direct post-operative results as well as complications of the(More)
The effectiveness of surgery in patients with sciatica due to lumbar disc herniations is not without dispute. The goal of this study was to assess the effects of surgery versus conservative therapy (including epidural injections) for patients with sciatica due to lumbar disc herniation. A comprehensive search was conducted in MEDLINE, EMBASE, CINAHL,(More)
OBJECT Although clinical guidelines for sciatica have been developed, various aspects of lumbar disc herniation remain unclear, and daily clinical practice may vary. The authors conducted a descriptive survey among spine surgeons in the Netherlands to obtain an overview of routine management of lumbar disc herniation. METHODS One hundred thirty-one spine(More)
The study design includes a systematic literature review. The objective of the study was to evaluate the effectiveness of transforaminal endoscopic surgery and to compare this with open microdiscectomy in patients with symptomatic lumbar disc herniations. Transforaminal endoscopic techniques for patients with symptomatic lumbar disc herniations have become(More)
BACKGROUND The design of a randomized multicenter trial is presented on the effectiveness of a prolonged conservative treatment strategy compared with surgery in patients with persisting intense sciatica (lumbosacral radicular syndrome). METHODS/DESIGN Patients presenting themselves to their general practitioner with disabling sciatica lasting less than(More)
OBJECT Muscle injury is inevitable during surgical exposure of the spine and is quantified by the release of creatine phosphokinase (CPK). No studies have been conducted on different spinal approaches and nonspinal surgery with regard to muscle injury. The present prospective cohort study was conducted to evaluate the results of postoperative serum CPK as(More)