Achilles tendon injuries see Heel Injuries and Disorders
Achondroplasia see Dwarfism
ACL injuries see Knee Injuries and Disorders
Amputation see Limb loss
Anterior Cruciate Ligament Injury see Knee Injuries and Disorders
Arthrography see Joint Disorders
Arthroplasty see Hip Replacement, Joint Disorders, Knee Replacement
Arthroscopy see Joint Disorders
Ataxia see Movement Disorders