**7. Summary**

Evaluation of the anatomy and biomechanics through clinical, functional, and triplanar imaging assessments is essential on decision-making for conservative treatment, hip preservation surgery and THA. The concept of hip layers is very useful for the orthopedic surgeon to identify and organize diagnosis and treatment plan in patients with hip abnormalities, and to relate those to the patient expectations. The effects of abnormal hip biomechanics on the spine-pelvis-CORE need to be considered when treating hip conditions. Hip diseases are treated and rarely cured. The treatment of hip diseases should be approached in a stepwise fashion, starting with education, accommodation, medication, physical therapy, mental rehabilitation, and injections. When conservative measures fail, the surgical treatment decision will be influenced by a comprehensive history and physical examination with triplanar imaging osseous assessment with discussion of patient expectations and commitment. In the future, the influence of hip treatment on hip-spine-pelvic-CORE will play a greater role on decision-making process.

*Decision Making in Borderline Cases between Hip Preservation and Reconstruction Surgery DOI: http://dx.doi.org/10.5772/intechopen.104765*
