Peter Hugh Dangerfield

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STUDY DESIGN The walking gait in 20 healthy adolescent girls and 20 adolescent girls with idiopathic scoliosis was compared using time and frequency domain analysis of the ground reaction forces. OBJECTIVES To investigate the support phase mechanics of walking gait in health subjects and those with scoliosis. SUMMARY OF BACKGROUND DATA Previous studies(More)
There is no generally accepted scientific theory for the etiology of adolescent idiopathic scoliosis (AIS). As part of its mission to widen understanding of scoliosis etiology, the International Federated Body on Scoliosis Etiology (IBSE) introduced the electronic focus group (EFG) as a means of increasing debate on knowledge of important topics. This has(More)
Legg-Calvé-Perthes' disease (Perthes' disease) is a childhood osteonecrosis of the hip for which the disease determinants are poorly understood. In this review, the authors identify studies of Perthes' disease incidence published up to December 2010 and make denominator populations comparable in order to allow meaningful between-study evaluation. Incidence(More)
This study was devised to develop a simple computerised method for measuring and quantifying the magnitude of spinal curvatures. A digitally scanned antero-posterior radiographic image was used. The vertebral column was defined as a line that can be subdivided into a number of segments, rather than into the exact number of vertebrae. The technique developed(More)
There is no generally accepted scientific theory for the causes of adolescent idiopathic scoliosis (AIS). As part of its mission to widen understanding of scoliosis etiology, the International Federated Body on Scoliosis Etiology (IBSE) introduced the electronic focus group (EFG) as a means of increasing debate on knowledge of important topics. This has(More)
There is no generally accepted scientific theory for the etiology of idiopathic scoliosis, and treatment is pragmatic and unrelated to such knowledge. As part of its mission to widen understanding of scoliosis etiology, the International Federated Body on Scoliosis Etiology (IBSE) introduced the electronic focus group (EFG) as a means of increasing debate(More)
The autonomic nervous system through its hypothalamic neuroendocrine control of puberty, skeletal growth and menarche contributes importantly to the pathogenesis of adolescent idiopathic scoliosis (AIS). Melatonin dysfunction detected in AIS subjects also involves the autonomic nervous system. The thoracospinal concept for the pathogenesis of right thoracic(More)
Anthropometric data from three groups of adolescent girls - preoperative adolescent idiopathic scoliosis (AIS), screened for scoliosis and normals were analysed by comparing skeletal data between higher and lower body mass index subsets. Unexpected findings for each of skeletal maturation, asymmetries and overgrowth are not explained by prevailing theories(More)
Several workers consider that the etiology of adolescent idiopathic scoliosis (AIS) involves undetected neuromuscular dysfunction. During normal development the central nervous system (CNS) has to adapt to the rapidly growing skeleton of adolescence, and in AIS to developing spinal asymmetry from whatever cause. Examination of evidence from (1) anomalous(More)
Although the causes and progression of adolescent idiopathic scoliosis (AIS) are still unclear, a recent extensive review has indicated a number of possible aetiological factors. Previous investigations, employing gait measurements, have indicated asymmetries in the ground reaction forces and suggest a relationship between these asymmetries, neurological(More)