In this case report, the drop foot due to compression of osteochondroma in a 9-year-old male patient with hereditary multiple exostoses is described. On physical examination, bony enlargements were palpated around the left knee. There was a decrease in the left knee and ankle joint range of motion, ankle and finger dorsiflexion muscle strength. In electrodiagnostic examination, chronic denervation in the muscles innervated by the peroneal nerve was detected. In the radiological evaluation, osteochondromas were present in the fibular head and distal femur. The patient had previously undergone surgical decompression and resection around the head of the fibula twice. After the rehabilitation program sessions, there was an increase in walking speed, stride length, and an improvement in activities of daily living in the patient. Osteochondromas may rarely cause neuropathies as a result of chronic compression. Early decompression and early rehabilitation are required in a lesion such as an osteochondroma in neuropathies developing after compression.