pin track infection [ME, pyn + trak, trace; L, inficere, to taint] , an abnormal condition associated with skeletal traction or external fixation devices and characterized by infection of superficial, deeper, or soft tissues or by osteomyelitis. These infections may develop at skeletal traction pin sites. Some of the signs of pin track infection are erythema at the pin sites, drainage and odor, pin slippage, elevated temperature, and pain. Superficial infection at the pin site is treated with antibiotics administered topically or orally. Deeper infection at the pin sites usually requires removal of the pins and antibiotic therapy.