Inclusion Criteria:  Patients diagnosed with arthritis. Age over 25 and under 65. Not riding on horseback in the last 6 months. Enough physical autonomy to be able to ride independently. Having pain in a joint with mild to moderate pain and / or decreased range of motion in any joint of a minimum of 10%  Exclusion Criteria:  Age under 25 and over 65. Having ridden on horseback in the previous 6 months. NOT having sufficient physical autonomy to be able to ride independently. DO NOT have pain in any joint with mild to moderate pain and / or DO NOT have a decrease in the range of motion in any joint of a minimum of 10% Have some other associated neuromuscular disease. Pregnancy  Contraindications of the E.T.: The German Commissariat for Therapeutic Riding Deutsches Kuratorium Für Therpeutisches Reiten (DKThR) endorse by more than 40 years of research, training and practice of said contraindications in relative and absolute terms, being:  Relative contraindications:  Relative contraindications: It depends on each person. To value. The current relative contraindications always require a detailed consultation with the treating specialist and weighing the risks in Relationship with the expected success of the treatment.  Hip displacement (the degree must be known). Metal implants in the extremities. Disc operations (must have passed more than 1 year). Degenerative immobilization of the spine (depends on the location). Scoliosis Cobb angle> 25º (outside the central straight line). M.Bechterew (depends on immobility and pain). Osteoporosis (dig with Cortisone and inactivity). Hematolytics (Marcumar). disturbed blood clotting. Spondylolisthesis. Epilepsy (the patient would have to spend a year without seizures; you have to think about the type of seizure, the triggering cause, the patient's age and weight). Diabetes mellitus (consider age, intensity and coexistence with diabetes). • Rhythmic cardiac disorders. Heart failure. Heart attack (it must be more than a year since the heart attack). Extreme trophic and sensitivity disorders. Age (depending on size and evolution, from 4 years to almost 65). Obesity (depends on the horses available, and the severity of the limitation of movement). Lack of trunk control. Seriously disturbed behavior (aggressive patients, with loud voices, etc.). • Periarticular ossifications. Bladder catheter. Sharp pains. Endoprosthesis (knee, hip).  Absolute contraindications:  Acute inflammatory processes. Acute herniated disc prolapse. Allergies (dust, horse hair). Insurmountable adductor spasticity. Coxarthrodesis. Acute rheumatism. Thrombosis, thrombophlebitis. Arterial hypertonia with a tendency to hypertensive crisis. Angina pectoris, strong arteriosclerosis. Spondylodesis (exception: stable angular spondylodesis in spinal cord injuries, in these usually only one segment stabilizes, talk to the doctor). Implants of the trunk, pelvis and femur-