-
Article
Surgically treated degenerative disk disease in twins
Previous studies have suggested that genetic factors are important in the development of degenerative disk disease (DDD). However, the concordance rates for the phenotypes requiring surgery are unknown. The pu...
-
Article
Open AccessThe minimal important change for the EQ VAS based on the SF-36 health transition item: observations from 25772 spine surgery procedures
The EQ VAS is an integral part of EQ-5D, a commonly used instrument for health-related quality of life assessment. This study aimed to calculate the minimal important change (MIC) thresholds for the EQ VAS for...
-
Article
Open AccessHandling of missing items in the Oswestry disability index and the neck disability index. A study from Swespine, the National Swedish spine register
The Oswestry Disability Index (ODI) and the Neck Disability Index (NDI) scoring algorithms used by the Swedish spine register (Swespine) until April 2022 handled missing items somewhat differently than the ori...
-
Article
Open AccessStability of SF-36 profiles between 2007 and 2016: A study of 27,302 patients surgically treated for lumbar spine diseases
Previous studies have shown that patients with different lumbar spine diseases report different SF-36 profiles, but data on the stability of the SF-36 profiles are limited. The primary aim of the current study...
-
Article
Single item self-rated general health: SF-36 based observations from 16,910 spine surgery procedures
In spine surgery single item patient-reported outcome assessment has been used for many years. Items 1 and 2 of SF-36 are used for assessment of general health. We used these items to explore single item, self...
-
Article
Responsiveness of the SF-36 general health domain: observations from 14883 spine surgery procedures
The study evaluated perceptions of general health (GH) after surgical treatment of spinal stenosis and disk herniation. We used a large longitudinally collected data set to explore differences in responsivenes...
-
Article
Open AccessPatients with no preoperative back pain have the best outcome after lumbar disc herniation surgery
Most patients with lumbar disc herniations requiring surgery have concomitant back pain. The purpose of the current study was to evaluate the outcome of surgery for lumbar disc herniations in patients with no ...
-
Article
Properties of the EQ-5D-3L index distribution when longitudinal data from 27,328 spine surgery procedures are applied to nine national EQ-5D-3L value sets
The purpose of the current study was to apply a single large longitudinal EQ-5D-3L data set to several national EQ-5D-3L value sets and explore differences in EQ-5D-3L index density functions and effect sizes ...
-
Article
Clinical appearance and reliability in visual assessment after in situ fusion for high-grade isthmic spondylolisthesis
The current literature on clinical appearance after surgery for high-grade spondylolisthesis is inconclusive. The few long-term comparative studies on surgical reduction versus in situ fusion report contradict...
-
Article
Adjacent segment disk degeneration three decades after fusion without attempted reduction for high-grade isthmic spondylolisthesis
Observational study.
