Introduction: An osteochondroma or exostosis is a benign bone tumour consisting of a bony outgrowth covered by a cartilage cap that occurs commonly in the metaphysis of long bones, mainly the distal femur, proximal tibia and proximal humerus.

Presentation of Case: We describe an unusual case of a synostosing osteochondroma affecting the left foot in a young female.

Discussion: Most osteochondromas are asymptomatic and seen incidentally during radiographic examination. Osteochondromas are rarely localized in the foot and ankle.

Conclusion: Although most of the osteochondromas should be treated conservatively until skeletal maturity, those affecting the foot should be treated with surgical excision in order to relieve pain or prevent fracture due to the expanding nature of this benign tumour.

Keywords:  Synostosing, osteochondroma, foot , metatarsals.

1. Unni Cartilagenous lesions of bone. J Orthop Sci 2001;6:457–72.
2. Takikawa K, Haga N, Tanaka H, Okada Characteristic factors of ankle valgus with multiple cartilaginous exostoses. J Pediatr Orthop 2008;28(7):761–5.
3. Chou LB, Ho YY, Malawer Tumors of the foot and ankle: experience with 153 cases. Foot Ankle Int 2009;30(9):836–41.
4. Mirra Bone tumors, clinical, radiological and pathologic correlation. Philadel- phia, Lea and Febiger 1989;2:1626–60.
5. Davids JR, Glancy GL, Eilert Fracture through the stalk of pedunculated osteo- chondromas. A report of three cases. Clin Orth Related Res 1991;271:258–64.
6. Galasso O, Mariconda M, Milano An enlarging osteochondroma in the adult patient. J Am Pediatr Med Assoc 2009;99(2):157–61.
7. Matsumoto K, Sumi H, Shimizu K.  Tibial  osteochondroma  causing  foot pain mimicking tarsal tunnel syndrome: a case report. J Foot Ankle Surg 2005;44(2):159–62.

Ankush V Mohabey

Pt. B.D. Sharma Postgraduate Institute of Medical Sciences, Rohtak

Email: This email address is being protected from spambots. You need JavaScript enabled to view it.