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Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_IV | Pages 593 - 593
1 Nov 2011
Dodwell ER Kwon B Hughes B Koo D Townson A Aludino A Simons R Fisher C Dvorak M Noonan V
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Purpose: Multiple studies have described the general injuries associated with mountain biking. However, no detailed assessment of mountain biking associated spinal column fractures and spinal cord injuries (SCI) has previously been reported. The purpose of this study is to describe the patient demographics, injuries, mechanisms, treatments, outcomes and resource requirements associated with spine injuries sustained while mountain biking.

Method: Patients who were injured while mountain biking, and presented to a provincial spine referral centre between 1995 and 2007 inclusive, with SCI and/ or spine fracture were included. A chart review was performed to obtain demographic data, and details of the injury, treatment, outcome and resource requirements.

Results: 102 men and 5 women were identified for inclusion. The mean age at injury was 32.7 years 95%CI[30.6,35.0]. 79 patients (73.8%) sustained cervical injuries, while the remainder sustained thoracic or lumbar injuries. 43 patients (40.2%) sustained a SCI. Of those with cord injuries, 18(41.9%) were ASIA A, 5(11.6%) were ASIA B, 10(23.3%) ASIA C, and 10(23.3%) ASIA D. 67 patients (62.6%) required surgical treatment. The mean length of stay in an acute hospital bed was 16.9 days 95%CI[13.1,30.0]. 33 patients (30.8%) required ICU care, and 31 patients (29.0%) required inpatient rehabilitation. Of the 43 patients (39.6%) who presented with SCI, 14(32.5%) improved by one ASIA category, and 1 (2.0%) improved by two ASIA categories. Two patients remained ventilator-dependent at discharge.

Conclusion: Spine fractures and SCI due to mountain biking accidents typically affect young, male, recreational riders. The medical, personal, and societal costs of these injuries are high. Injury prevention should remain a primary goal, and further research is necessary to explore the utility of educational programs, and the impact of helmets and other protective gear on spine injuries sustained while mountain biking.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_IV | Pages 585 - 586
1 Nov 2011
Dodwell ER Latorre JG Parisini E Zwettler E Chandra D Mulpuri K Snyder B
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Purpose: Non-steroidal anti-inflammatory drugs (NSAIDs) are powerful analgesics, frequently used for post-operative pain control. However, concerns regarding the potential deleterious effects of NSAIDs on bone healing have compelled many physicians to avoid NSAIDs in patients with fractures, osteotomies, and fusions. The purpose of this study was to systematically review and meta-analyze the best clinical evidence regarding the effects of NSAIDs on bone healing.

Method: We performed a literature search for studies of fracture, osteotomy or fusion patients with NSAID exposure, and non-union as an outcome. Data on study design, patient characteristics and risk estimates were extracted. Pooled effect estimates were calculated. Study inclusion results were checked for evidence of publication bias. Metaregressions were performed to assess the impact of age, smoking, and study quality on reported risk of non-union.

Results: Seven spine fusion and four long-bone fracture studies were included. A significant association between lower quality studies and higher reported odds ratios for non-union was identified. When only higher quality studies were considered, seven spine fusion studies were analyzed, and no statistically significant association between NSAID exposure and non-union was identified (OR=2.2, 95%CI:0.8, 6.3). No statistically significant association was found in sub-analysis of patients exposed to high dose IV/IM ketorolac (OR=2.0, 95%CI:0.4, 11.1), low dose IV/IM ketorolac (OR=1.2 95%CI:0.3, 4.5), or standard oral NSAIDs (OR=7.1, 95%CI:0.1, 520). In sub-analysis of the four most clinically relevant studies of adult spine fusion patients with well defined peri-operative NSAID exposure, no statistically significant association was found between NSAID exposure and risk of non-union (OR=0.8 95%CI:0.4, 1.4).

Conclusion: Studies on NSAID exposure in long-bone healing settings were of lesser quality than studies in the spine fusion setting. Within the spine literature we could not demonstrate any increased risk of non-union with NSAID exposure. Randomized controlled trials (and meta-analyses of such trials) on the impact of standard NSAID and COX-2 inhibitor exposure in spine and long-bone fracture, fusion and osteotomy populations are warranted to confirm or refute the findings of this meta-analysis of observational studies.