James K. Mahood

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Adolescent idiopathic scoliosis (AIS) is a three-dimensional spinal deformity. Brace treatment is a common non-surgical treatment, intended to prevent progression (worsening) of the condition during adolescence. Estimating a braced patient’s risk of progression is an essential part of planning treatment, so method for predicting this risk would be a useful(More)
OBJECTIVE To investigate whether low intensity transcranial electrical stimulation (TES) can be used to condition post-activation depression of the H-reflex and simultaneously monitor the integrity of spinal motor pathways during spinal deformity correction surgery. METHODS In 20 pediatric patients undergoing corrective surgery for spinal deformity,(More)
Objective Ionizing radiation exposure is a concern for children with scoliosis. A pilot study demonstrated that a proxy Cobb angle can be obtained from spinal ultrasound (US) images. The objective was to evaluate the reliability and comparison to radiographic Cobb angle of the coronal curvatures measurements from the US images on AIS patients. Methods Forty(More)
Objective Bending radiographs are routinely used to determine curve flexibility during planning of scoliosis surgery. However, the cumulative dose of ionizing radiation is a concern, especially in growing children. Ultrasound (US) imaging method has been used to measure the coronal curvatures up to 45° Cobb. The objectives were to investigate the(More)
Spinal muscular atrophy is a progressive condition in which movement is gradually lost as a result of the loss of spinal motor neurons. Individuals with this condition may require surgical correction of a secondary scoliosis. Motor evoked potentials were recorded using transcranial electrical stimulation in four such individuals undergoing surgery. All the(More)
The outcomes of brace treatment for scoliosis depend on how the brace is used. Simply prescribing a brace does not mean it will be worn properly. A smart brace has been developed to control the brace wear tightness with the expectation that appropriately worn braces will improve outcomes. Twelve brace candidates (10F; 2M) agreed to participate into this(More)
OBJECT Pedicle screw fixation is a mainstay of thoracolumbar stabilization. Screw insertion using anatomical landmarks and fluoroscopy is common but can be technically challenging and generally involves substantial exposure to ionizing radiation. Computerized navigation has been reported to improve accuracy but is expensive and complex. The authors(More)
A 29 year old woman during a non-professional, recreational, wrestling episode sustained a fall on her neck. She immediately experienced severe neck pain and felt weakness in her upper limbs. Her neurological examination in the emergency department, showed grade 3/5 motor strength in deltoid, biceps, brachioradialis, wrist and finger extensors bilaterally.(More)
There is considerable controversy regarding the effectiveness of orthotic treatment for patients with adolescent idiopathic scoliosis. Most researchers believe that, to be effective, the orthosis must be worn as prescribed for both compliance and tightness. Compliance is the time the brace is worn relative to the prescribed time. A battery-powered(More)