Evaluation of wheelchair headrests in the 1990s showed that commercially available products failed in static FMVSS 202 tests. However, those tests did not evaluate dynamic rear impact neck injury risk for wheelchair users. In this paper baseline testing of the BIORID dummy seated in a surrogate wheelchair subject to IIWPG rear impact tests is presented. Neck hyperextension was observed, and inj...

An example of paraplegia due to hyperextension of the neck is described in which neurological and post-mortem examination demonstrated the nature and mechanism of the injury. CASE REPORT A man of sixty-three years, suffering from influenza, fainted and struck his forehead Oil a wall. \Vhen he regained consciousness about a minute later, he could not move his limbs aild had 1)araesthesiae and nu...

The purpose of this report is to describe hyperextension dislocation of the cervical spine and to illustrate its often subtle radiographic features. An analysis of the lateral cervical spine radiographs in 20 patients with hyperextension dislocation of the cervical spine revealed the combination of diffuse prevertebral soft-tissue widening together with normally aligned cervical vertebrae in al...

Patients with hereditary spastic paraplegia (HSP) often resemble patients with mild spastic diplegia (SD), although their motor limitations differ. The aim of this study was to analyse quantitatively the gait of HSP and SD subjects in order to define the gait pattern in HSP and the differences between the two conditions. Fifteen subjects with HSP, 40 patients with SD and 20 healthy subjects und...

OBJECTIVES To report the outcome of unilateral surgery, by a plantaromedial approach, in 15 Labrador Retrievers with osteochondrosis dissecans (OCD) of the medial trochlear ridge of the talus. To evaluate the influence on outcome of age at surgery, bilateral involvement, periarticular soft tissue increase (PSI), osteophyte size (OS), decrease of range of joint motion and follow-up. To assess th...

We report here 39 cases in which definite multiple sclerosis (MS) was precipitated or exacerbated by specific hyperextension-hyperflexion cervical cord trauma. The worsening or onset of the symptomatic disease bore a striking temporal relationship to the focal injury. Our data suggests that central nervous system (CNS)-specific acute physical trauma such as cervical cord hyperextension-hyperfle...

Previous accounts used different terms – whiplash injury, hyperextension injury, acceleration injury, soft tissue neck injury, cervical strain, cervical sprain – to describe the lesion that may occur after and the consequences of a typical car accident: a rear-end motor vehicle collision. When a vehicle is struck from the rear, the occupants rarely have any warning and do not brace the muscles ...