The Fowler-Philip angle reflects the relation of the inferior calcaneus to the posterior calcaneus.
It is an angle measured on the lateral view of a loaded foot; formed between 2 lines:
- a line tangent to the posterosuperior border of the calcaneus and the calcaneal tuberosity.
- a line tangent to the inferior border of the calcaneus (longitudinal axis of the calcaneus).
Its normal range is between 44° and 69°.
- 1. Fowler, A., and Philip, J. F.: Abnormality of the calcaneus as a cause of painful heel. Its diagnosis and operative treatment. British J. Surg., 32: 494-498, 1945
- 2. Ruch JA: Haglund's disease. J Am Pocliatry,'lssoc 64(12): 1000- 1003, 1974.
- 3. Castro W, Jerosch J. Examination and Diagnosis of Musculoskeletal Disorders, History - Physical Examination - Imaging Techniques - Arthroscopy. TIS. (2001). ISBN: 3131605812