title: Ultrasound-Guided Percutaneous Removal of Wooden Foreign Bodies in the Extremities with Hydro-Dissection Technique.
abstract: OBJECTIVE
  We described the technique of ultrasound (US)-guided percutaneous removal of the foreign bodies (FB) with hydro-dissection in the radiologic department and presented video files of several cases.
  
  
  METHODS
  Four patients referred to the radiology department for US evaluation and US-guided percutaneous removal of the FBs in the upper and lower extremities between November, 2006 and November, 2013 were included in this study. The procedures started with US evaluation for the exact location and shape of the FB. A 5 mm-sized skin incision was made at the site of the nearest point from the FB where no passing arteries or tendons were present. We adopted a hydrodissection technique to separate the FB from adjacent tissue using a 2% lidocaine solution. Injected anesthetics detached the FBs from surrounding tissue and thereby facilitated removal. After the tip of the mosquito forceps reached the FB, the wooden FBs were removed.
  
  
  RESULTS
  The mean time required for the entire procedure was approximately 20 minutes. There were no significant complications during the US-guided removal or long-term complications after the procedure. All 4 FBs were successfully removed from the soft tissue under US guidance.
  
  
  CONCLUSIONS
  Ultrasound-guided percutaneous removal of the FBs with hydro-dissection in the radiology department is a less invasive and safe method over surgical removal in the operating room. Additionally, the use of a guide wire and serial dilator may help minimize soft tissue injury and facilitate the introduction of forceps.
authors.affiliation: Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul 03181, Korea.
authors.forename: Hee Jin
authors.initials: HJ
authors.lastname: Park
authors.affiliation: Department of Radiology, Dongsan Medical Center, Keimyung University School of Medicine, Daegu 41931, Korea.
authors.forename: Sung Moon
authors.initials: SM
authors.lastname: Lee
authors.affiliation: Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul 03181, Korea.
authors.forename: So Yeon
authors.initials: SY
authors.lastname: Lee
authors.affiliation: Department of Orthopaedic Surgery, Dongsan Medical Center, Keimyung University School of Medicine, Daegu 41931, Korea.
authors.forename: Eun Seok
authors.initials: ES
authors.lastname: Son
authors.affiliation: Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul 03181, Korea.
authors.forename: Eun Chul
authors.initials: EC
authors.lastname: Chung
authors.affiliation: Department of Radiology, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul 03181, Korea.
authors.forename: Myung Ho
authors.initials: MH
authors.lastname: Rho
authors.affiliation: Department of Radiology, Inje University College of Medicine, Busan Paik Hospital, Busan 47392, Korea.
authors.forename: Sun Joo
authors.initials: SJ
authors.lastname: Lee
mesh_terms: D000368:Aged; D002648:Child; D005260:Female; D005547:Foreign Bodies / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D035002:Lower Extremity / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D017695:Soft Tissue Injuries / Q000000981:diagnostic imaging / Q000601:surgery*; D013525:Surgical Instruments; D014463:Ultrasonography
keywords: Foreign bodies; Intervention; Surgery; Ultrasound