Participation restriction and assistance needs in people with spinal cord injuries of more than 40 year duration.

STUDY DESIGN: Prospective observational. OBJECTIVES: Examine changes in participation restriction and assistance needs in a sample of people with long-standing spinal cord injuries (SCIs). SETTING: Two British spinal centres. METHODS: The sample consisted of British ageing with SCI study participants who were seen at baseline (1990 or 1993) and in the final follow-up (2010). Outcome measures were the Craig Handicap Assessment and Reporting Technique-Short Form (CHART-SF) and interview questions about assistance needs. RESULTS: Eighty-five Ageing study participants took part in 2010; their mean age was 67.65 years and the mean time since injury was 46.26 years. The mean CHART-SF physical independence subscore decreased from 97.44 in 1990 to 91.26 in 2010, mobility from 95.58 to 82.10, occupation from 86.82 to 64.49 and social integration from 96.29 to 88.68 (all p < 0.05). Increasing assistance needs were reported by 10.1% of participants in 1990, by 36.6% in 2010 (p < 0.05) and by 62.4% over the entire 20-year study period. Persons requiring more assistance were older and injured longer, had a more severe SCI and lower self-reported quality of life and life satisfaction (p < 0.05). In the multivariate logistic regression, the strongest predictor of needing more assistance was injury severity (p < 0.05). CONCLUSIONS: An increase in participation restriction and in assistance needs was reported over the 20 year follow-up in persons injured more than 40 years ago. SCI severity was the main risk factor for needing more assistance. Clinical awareness of how participation changes with age may help provide timely intervention and offset declines.

Comparison of statistical methods for calculating life expectancy after spinal cord injury.

STUDY DESIGN: Retrospective observational. OBJECTIVES: To compare results of several different methods for calculating life expectancy in the same sample of people with spinal cord injury (SCI), and critically assess their advantages and disadvantages. SETTING: Two spinal centres in Great Britain. METHODS: Survival status of persons with traumatic SCI injured between 1943 and 2010 with follow-up to 2015 was determined. Standardised mortality ratios (SMRs) were calculated using age at injury and current (attained) age, and compared. Life expectancy was then estimated using the SMR methods and compared with the results of a method based on multivariate logistic regression of a person-year dataset. Life expectancy estimates calculated by applying SMRs based on current age to general population period (current) and cohort (projected) life tables were also compared. RESULTS: The estimated life expectancies were significantly higher when the SMRs were based on age at injury. They were also higher when a general population cohort life table was used, particularly for younger ages. With the exception of the ventilator-dependent group, the life expectancy estimates derived from logistic regression were slightly lower than those derived from SMRs based on current age and a general population period life table. CONCLUSIONS: The multivariate logistic regression of person-years method offers several advantages compared to the SMR method for calculating life expectancy after SCI, the main ones being: greater statistical power and precision with smaller sample sizes, the ability to include more predictive factors and to distinguish the otherwise confounded effects of current age, time post-injury, and calendar time.

Long-term bladder and bowel management after spinal cord injury: a 20-year longitudinal study.

STUDY DESIGN: Prospective observational. AIM: The aim of this study was to analyse changes in bladder and bowel management methods in persons with long-standing spinal cord injury (SCI). SETTING: Two spinal centres in UK. METHOD: Data were collected through interviews and examinations between 1990 and 2010 in a sample of persons injured more than 20 years prior to 1990. RESULTS: For the 85 participants who completed the 2010 follow-up, the mean age was 67.7 years and the mean duration of injury was 46.3 years, 80% were male, 37.7% had tetraplegia AIS grade A, B, or C, 44.7% paraplegia AIS A, B, or C, and 17.6% an AIS D grade regardless of level. In all, 50.6% reported having changed their bladder method, 63.1% their bowel method, and 40.5% both methods since they enroled in the study. The reasons for change were a combination of medical and practical. In men, condom drainage remained the most frequent bladder method, and in women, suprapubic catheter replaced straining/expressing as the most frequent method. The use of condom drainage and straining/expressing bladder methods decreased, whereas the use of suprapubic and intermittent catheters increased. Manual evacuation remained the most frequent bowel management method. The percentage of participants on spontaneous/voluntary bowel emptying, straining and medications alone decreased, whereas the use of colostomy and transanal irrigation increased over time. CONCLUSIONS: More than half the sample, all living with SCI for more than 40 years, required change in their bladder and bowel management methods, for either medical or practical reasons. Regular follow-ups ensure adequate change of method if/when needed.

Review of physiological motor outcome measures in spinal cord injury using transcranial magnetic stimulation and spinal reflexes.

This article reviews methods that have been developed as part of a clinical initiative on improving outcome measures for motor function assessment in subjects with spinal cord injury (SCI). Physiological motor outcome measures originally developed for limbs-transcranial magnetic stimulation (TMS) of the motor cortex to elicit motor-evoked potentials (MEPs) and mechanical stimulation to elicit spinal reflexes-have been extended to muscles of the trunk. The impetus for this development is the lack of a motor component in the American Spinal Injury Association clinical assessment for the thoracic myotomes. The application of TMS to the assessment of limb muscles is reviewed, followed by consideration of its application to the assessment of paravertebral and intercostal muscles. Spinal reflex testing of paravertebral muscles is also described. The principal markers for the thoracic SCI motor level that have emerged from this clinical initiative are (1) the threshold of MEPs in paravertebral muscles in response to TMS of the motor cortex, (2) the facilitation pattern and latency of MEPs in intercostal muscles during voluntary expiratory effort, and (3) the absence of long-latency reflex responses and the exaggeration of short-latency reflex responses in paravertebral muscles.

Quantitative sensory tests (perceptual thresholds) in patients with spinal cord injury.

This article was presented at the Premeeting Workshop on Outcome Measures at the American Spinal Injury Association (ASIA) Annual Scientific Meeting in Dallas, Texas, in May 2005. The article summarizes preliminary findings of three quantitative sensory tests that were evaluated as part of the International Spinal Research Trust Clinical Initiative study: perceptual thresholds to electrical, vibration, and thermal stimulation. The results gathered so far suggest that the three tests are simple, reproducible, and applicable in a clinical setting. The tests seem to add resolution and sensitivity to the standard clinical testing and could be useful adjuncts in longitudinal monitoring of spinal cord injury for research purposes.

The relation of thoracic and lumbar fracture configuration to the development of late deformity in childhood spinal cord injury.

STUDY DESIGN: A retrospective clinical observational study was conducted. OBJECTIVE: To assess the relation of spinal fracture type and its magnitude of distortion to subsequent long-term development of late spinal deformity in childhood onset spinal cord injury. SUMMARY OF BACKGROUND DATA: In this study, 76 adults who sustained spinal cord injury during childhood were examined clinically and radiographically alongside a retrospective review of case notes and radiographs. METHODS: The nature of the spinal injury and the progression of its displacement were defined from radiographs taken immediately after injury, then at 4 months and at 1 year. Eventual adult spinal deformity was defined from standardized erect long-plate radiographs. Scoliosis, kyphosis, and lordosis were measured using Cobb's method. RESULTS: There was no statistically significant difference in the severity of scoliosis, kyphosis, or lordosis between traumatic and nontraumatic injuries, nor between patients with and those without radiologically visible bony injury. Of the 14 patients with traumatic thoracic and lumbar injuries who had undergone no surgical intervention, 10 (71%) showed development of major scoliotic curves that did not include the fracture site. The patients with no angular displacement at the fracture site after 1 year went on to experience the development of more severe scoliosis (mean, 66 degrees) than those who had displaced fractures (mean, 38 degrees). In five, a low kyphotic curve and a compensatory lordosis above it developed. CONCLUSIONS: There is no evidence that the bony injury to the vertebral column itself in the child with spinal cord injury influences the development of late scoliosis or lordosis, but it may influence any eventual kyphosis.