Comprehensive analysis of hip injuries in an 88-year-old active golfer, focusing on common causes, anatomical context, and evidence-based rehabilitation protocols. The documents identify three primary probable causes for persistent hip pain: Hip Osteoarthritis (OA), characterized by deep groin pain and stiffness; Gluteal Tendinopathy/Greater Trochanteric Pain Syndrome (GTPS), presenting as lateral hip pain; and the crucial need to rule out an Occult Femoral Neck Fracture, especially if weight-bearing is difficult. For each condition, the sources detail specific treatment plans ranging from conservative management and activity modification to progressive strengthening exercises and, for severe cases, medical interventions like corticosteroid injections or total hip replacement. Finally, the guides lay out a structured, multi-phase roadmap for a safe, gradual, and biomechanically mindful return to golf, emphasizing long-term injury prevention.