title: Venous thrombosis after hallux valgus surgery.
abstract: BACKGROUND
  Although surgery for the treatment of hallux valgus is frequently performed, the exact rate of deep vein thrombosis following this procedure is unknown. We performed a single-center, prospective, phlebographically controlled study to quantify the rate of venous thrombosis following operative correction of hallux valgus.
  
  
  METHODS
  Consecutive patients undergoing chevron bunionectomy for correction of hallux valgus deformity were enrolled in the study. Patients with clinical or hematological risk factors for venous thrombosis were excluded. One hundred patients with a mean age of 48.9 years were operated on and did not receive medical prophylaxis against thrombosis. All patients were assessed with phlebography at a mean of twenty-nine days postoperatively.
  
  
  RESULTS
  Venous thrombosis was found in four patients (4%). The mean age of these patients (and standard deviation) was 61.7 +/- 6.1 years compared with a mean age of 48.4 +/- 13.9 years for the patients in whom thrombosis did not develop (p = 0.034).
  
  
  CONCLUSIONS
  Patients are at a low risk for venous thrombosis following surgical treatment of hallux valgus. The need for prophylaxis against thrombosis should be calculated individually for each patient according to his or her known level of risk. Routine medical prophylaxis against thrombosis might be justified for patients over the age of sixty years.
authors.affiliation: Department of Orthopaedic Surgery, University of Graz, Austria. roman.radl@uni-graz.at
authors.forename: Roman
authors.initials: R
authors.lastname: Radl
authors.forename: Norbert
authors.initials: N
authors.lastname: Kastner
authors.forename: Christian
authors.initials: C
authors.lastname: Aigner
authors.forename: Horst
authors.initials: H
authors.lastname: Portugaller
authors.forename: Herbert
authors.initials: H
authors.lastname: Schreyer
authors.forename: Reinhard
authors.initials: R
authors.lastname: Windhager
mesh_terms: D017677:Age Distribution; D000368:Aged; D015992:Body Mass Index; D005260:Female; D006215:Hallux Valgus / Q000601:surgery*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D010027:Osteotomy / Q000009:adverse effects* / Q000379:methods; D010314:Partial Thromboplastin Time; D018579:Patient Selection; D010690:Phlebography; D015995:Prevalence; D011379:Prognosis; D011446:Prospective Studies; D011517:Prothrombin Time; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000209:etiology* / Q000517:prevention & control