Orthopedic:
Fusion
Instabilities/Abnormalities, including Atlantoaxial Instability (common with Down Syndrome, JRA)
Scoliosis/Kyphosis/Lordosis
Spinal Orthoses
Internal Spinal Stabilization Devices (such as Harrington Rods)
Hip Subluxation and Dislocation
Coxarthrosis
Pathologic Fractures
Heterotopic Ossification
Osteogenesis Imperfecta
Osteoporosis
Cranial Deficits
Joint instabilities
Neurological:
Hydrocephalus/shunt
Spina Bifida
Tethered Cord
Chiari II Malformation
Hydromyelia
Paralysis due to Spinal Cord Injury (above T-6)
Seizure disorder or history of seizures
Medical/Surgical:
Allergies to Grasses, Animals, and Dust
Cancer
Poor Endurance
Recent Surgery
Diabetes
Peripheral Vascular Disease
Varicose Veins
Hemophilia
Hypertension
Serious Heart Condition
Stroke (Cerebrovascular Accident)
Acute exacerbation of chronic disorder (Rheumatoid Arthritis, Herniated Disk, Multiple Sclerosis, etc)
Open wound over weight bearing surface
Indwelling urethral catheter
Other:
Mental/behavioral disorders that would be unsafe (fire setting, animal abuse, violent behavior, etc)
Weight over 190 lbs.