Orthopaedic surgeons often remove foreign bodies from the extremities. If the foreign body isradio-opaque, it can be located using conventional radiographs or fluoroscopy. However if theforeign body is a radiolucent object, it may not be detected by radiograph leading to seriouscomplications. The aim of this paper is to discuss the role of US in detection of non radioopaqueforeign body in addition to the presentation and nature of the foreign body.Twenty patients with penetrating injuries to the extremities were treated from January-December 2008 at Samawa General Hospital. They were 11 male and 9 female, their agesranged between 4 to 50 years (average 22.7). All patients were evaluated by detailed history,clinical examination, radiography and US which were done at the department of radiology inSamawa General Hospital.The lower limb was affected in 14 cases (70%) while the upper limb in 6 cases (30%).presenting symptoms were; pain (16 cases) followed by swelling (3 cases), limping anddischarging sinus (one case). No foreign bodies were detected by radiography in this study. Onthe other hand, US detect and localize foreign body in each case. Fifteen patients had history offailed previous interventions for removing foreign bodies.In conclusion, Non radio-opaque foreign bodies are common in children and adults most oftenpresenting as penetrating injury to the extremities. Failure to remove it may lead to seriouscomplications and malpractice lawsuits. US has emerged as the study of choice for detection ofradiolucent foreign bodies.