Final answer:
Considering the symptoms described, including increased pain with internal rotation, option D) Femoroacetabular impingement (FAI) could be the most likely cause of the anterior hip and groin pain. However, clinical evaluation is essential for an accurate diagnosis.
Step-by-step explanation:
Sudden Onset of Anterior Hip Pain
The symptoms described - sudden onset of pain in the anterior hip and groin, increased pain with stairs, incline, impact, and particularly with internal rotation - can suggest several possible conditions. Given the options provided:
- Hip fracture: Typically presents with acute pain after a fall or trauma, especially in elderly individuals with weakened bones due to osteoporosis. A hip fracture requires surgical treatment and is associated with substantial healthcare costs and increased morbidity and mortality.
- Trochanteric bursitis: Causes pain and tenderness near the greater trochanter which can increase with movement, but the internal rotation symptom is less commonly associated with this condition.
- Osteoarthritis (OA): Often involves stiffness and pain that worsens with activity and improves with rest. OA of the hip can lead to decreased mobility and may necessitate a hip replacement.
- Femoroacetabular impingement (FAI): Characterized by pain in the groin area especially with hip flexion and internal rotation. It is a result of abnormal contact between the femur and hip socket.
Considering the specific symptoms of increased pain with internal rotation, option D) Femoroacetabular impingement (FAI) could be the most likely diagnosis. However, a thorough clinical evaluation would be necessary to confirm this.