Document ID: chunk:federal_register_of_legislation:F2017L00167:reg:9:p1
Version: federal_register_of_legislation:F2017L00167
Segment Type: reg
Provision Reference: reg 9 (pt 1/2)
Character Range: 3799–6955

9               Factors that must exist
At least one of the following factors must exist before it can be said that, on the balance of probabilities, spondylolisthesis or spondylolysis or death from spondylolisthesis or spondylolysis is connected with the circumstances of a person's relevant service:
(1)          experiencing a high impact trauma to the spine resulting in an acute fracture of the vertebral arch at the time of the clinical onset of spondylolisthesis or spondylolysis;
(2)          for spondylolisthesis only, experiencing a high impact trauma to the spine resulting in an acute fracture of the vertebral arch or dislocation of the involved vertebra within the one year before the clinical onset of spondylolisthesis;
(3)          for spondylolysis or spondylolytic spondylolisthesis in persons less than 25 years of age only, engaging in activities involving repetitive and forceful hyperextension, torsion or rotation against resistance of the spine for an average period of at least ten hours per week for the six months before the clinical onset of spondylolisthesis or spondylolysis;
Note 1: spondylolytic spondylolisthesis is defined in the Schedule 1 - Dictionary.
             Note 2: Examples of activities involving repetitive and forceful hyperextension, torsion or rotation against resistance include gymnastics, pole vaulting, dancing, weightlifting, weight training, wrestling, judo, horse riding, swimming and playing football, tennis, volleyball, basketball, golf and cricket.
(4)          having undergone a spinal fusion of a segment of adjacent vertebrae before the clinical onset of spondylolisthesis or spondylolysis;
Note: spinal fusion is defined in the Schedule 1 - Dictionary.
(5)          having undergone spinal surgery as specified at the level of the involved vertebra before the clinical onset of spondylolisthesis or spondylolysis;
Note: spinal surgery as specified is defined in the Schedule 1 - Dictionary.
(6)          for degenerative spondylolisthesis of the lumbar or cervical spine only, having spondylosis at the level of the involved vertebra, before the clinical onset of spondylolisthesis;
Note: degenerative spondylolisthesis is defined in the Schedule 1 - Dictionary.
(7)          having pathological damage to the affected vertebra at the time of the clinical onset of spondylolisthesis or spondylolysis;
Note: pathological damage to the affected vertebra is defined in the Schedule 1 - Dictionary.
(8)          having rheumatoid arthritis involving the affected vertebra at the time of the clinical onset of spondylolisthesis;
(9)          for degenerative anterolisthesis only, being obese for the five years before the clinical onset of spondylolisthesis;
Note: being obese and degenerative anterolisthesis is defined in the Schedule 1 - Dictionary.
(10)      experiencing a high impact trauma to the spine resulting in an acute fracture of the vertebral arch at the time of the clinical worsening of spondylolisthesis or spondylolysis;
(11)      for spondylolisthesis only, experiencing a high impact trauma to the spine resulting in an acute fracture of the vertebral arch or dislocation