Muscles, bones and joints Find help and support if affected by muscle, bone or joint conditions. Arthritis and related conditions Ankylosing spondylitis Arthritis Axial Spondyloarthritis Cervical spondylosis Enteropathic arthritis Fibromyalgia Gout Juvenile Idiopathic Arthritis Lupus Osteoarthritis Polymyalgia rheumatica (PMR) Psoriatic arthritis Reactive arthritis Rheumatoid arthritis Back problems Bone conditions Brittle bone disease Osteopenia Osteoporosis Paget's disease of bone Elbow problems Hip problems Hip replacement Other hip problems Leg, knee and foot Ankle problems Calf problems Foot problems Knee problems Thigh problems Movement disorders Ataxia Dystonia Gait disorders Parkinson's tremors Restless legs syndrome Spasticity Stiff person syndrome Tics and Tourette syndrome Tremors or shaking hands Muscle, bone or joint injury Repetitive strain injury (RSI) Sports injuries Scoliosis Shoulder and neck Frozen shoulder Neck problems Other shoulder problems Wrist, hand and finger problems Carpal tunnel syndrome Other wrist, hand and finger problems