title: [Analyse of the risk factors of DVT after lower extremity surgery].
abstract: OBJECTIVE
  To investigate the morbility rate of deep venous thrombosis (DVT) after lower extremity surgery and analyze the risk factors.
  
  
  METHODS
  All 136 cases of lower extremity surgeries in the period of Nov. 1999 to May. 2002 without any anti-coagulopathy agents pre-surgery were analyzed. There were 78 male and 58 female, aged from 16 to 82 years with an average age of 49.5 years. All the cases were examined by sonography before the surgery to rule out bilateral deep venous thrombosis, and were examined bilateral lower extremities with inverse phlebography postoperation, and finally the results were used to analyze the risk factors of DVT.
  
  
  RESULTS
  DVT was found 24 in 51 arthroplastic patients, include 10 after THA and 14 after TKA, respectively. And the morbility rate of DVT after the surgical treatment of osteoarthritis, rheumatoid arthritis, femoral head aseptic necrosis and femoral neck fracture were 9, 6, 7, 12, respectively.
  
  
  CONCLUSIONS
  Patients of aged, DVT history, cardiorespiratory compromises or diabetes mellitus, and using tourniquet or bone cement during the surgery are more likely to suffer from DVT after surgery.
authors.affiliation: Department of Orthopaedics, the 1st Affiliated Hospital of Anhui Medical University, Hefei 230032, Anhui, China. cabin.7706@126.com
authors.forename: Bin
authors.initials: B
authors.lastname: Xu
authors.forename: Hong-gang
authors.initials: HG
authors.lastname: Xu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019643:Arthroplasty, Replacement; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000098:blood supply / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D012307:Risk Factors; D020246:Venous Thrombosis / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality