Osteochondroma with enchondroma of the metatarsals in the same foot. A case report

Correction of a Forefoot Deformity Caused by a Large, Solitary Metatarsal Osteochondroma in an Adolescent: A Case Report

Solitary osteochondroma is the most common bone tumor, accounting for 20% to 50% of all benign bony tumors. Osteochondromas are usually found on the metaphysis of the long bones near the physis; the bones of the foot are less commonly involved. We describe a 13-year-old female with a large osteochondroma arising from the fourth metatarsal. Pressure from the tumor on the adjacent metatarsals had deformed her forefoot, creating cosmetic and functional problems. The second and third toes were deviated laterally at the metatarsophalangeal joint, and the fourth and fifth toes were deviated medially. In addition, the fourth and fifth toes were flexed at the proximal interphalangeal joint. We excised the osteochondroma and stabilized the metatarsophalangeal joints. After 3 years, the cosmetic and functional results were satisfactory. The subluxation at the metatarsophalangeal joints had resolved without treatment. Her Revised Foot Function Index score had improved from 141 preoperatively to 95 postoperatively, and her Manchester-Oxford Foot Questionnaire score had improved from 25 to 0. This case is a rare example of a large metatarsal osteochondroma in a growing child in which pressure from the tumor caused secondary forefoot deformities. The management of this case also shows the potential for the forefoot to remodel itself during adolescence, after the tumor has been resected and the joints stabilized.

Enchondroma as a cause of midfoot pain

Enchondroma is a common bone tumor of the foot. It is often reported in the phalanges and distal metatarsals. The authors, however, present a rare case study of two patients with enchodromas as the cause of midfoot pain. One case presented in the lateral cuneiform which to the authors' knowledge is the first reported case in the literature. Two cases are presented with their surgical management including autogenous calcaneal graft and follow-up.