This issue of Veterinary Clinics of North America: Small Animal Practice, with Editors Drs. Tisha Harper and Ryan Butler, focuses on Hip Dysplasia. Article topics include: Etiopathogenesis of hip dysplasia, incidence and genetics; Clinical signs and physical examination findings; Diagnostic imaging; OFA and PennHip Treatments; Medical management of hip dysplasia; Surgical management of hip dysplasia; Pain management - Hip Denervation; Juvenile Pubic Symphysiodesis;Triple pelvic osteotomy (TPO), and double pelvic osteotomy (DPO); Total Hip Replacement; Femoral Head and Neck Excision; The role of physical therapy for dogs with hip dysplasia.