The Bok Sevens medical team also confirmed that Delport is also suffering from an osteochondroma injury on his upper arm bone.    From Wordnik.com.  [News24 Top Stories] Reference

Enchondroma may be composed of osteoid tissue, such as is found in the ossifying callous between the bone and the periosteum, and, according to Virchow, then takes the name of osteochondroma.    From Wordnik.com.  [Anomalies and Curiosities of Medicine] Reference