title: [Prognosis of calf deep-vein thrombosis after total knee arthroplasty].
abstract: OBJECTIVE
  To explore the outcome of deep-vein thrombosis (DVT) in the calf after total knee arthroplasty.
  
  
  METHODS
  From June 2009 to June 2011, 159 patients with DVT in the calf after total knee arthroplasty (TKA) were divided into two groups. Group A (active mobilization) included 80 patients and group B (passive mobilization) 79 patients. These patients were checked with ultrasonography 1 week and 4 weeks postoperation. The changes of DVT in the calf, ROM, KSS score and WOMAC score were observed.
  
  
  RESULTS
  The disappearance rates of the calf DVT in groups A and B were 35% and 33% 4 weeks postoperation. There was similar DVT disappearance rate in the two groups (P=0.91 ). No patient developed proximal propagation. There was no difference of the ROM (111.9° ± 13.4° vs. 110.5° ± 10.9°, P=0.490), KSS knee score ( 93.5 ± 4.7 vs. 93.9 ± 5.1, P=0.621), KSS function score (83.4 ± 15.1 vs. 82.9 ± 14.5, P=0.513) and WOMAC score (90.9 ± 5.7 vs. 90. 3 ± 6.1, P=0.535) in groups A and B.
  
  
  CONCLUSIONS
  A DVT in the calf after TKA can resorb spontaneously with time. The treatment of a DVT in the calf does not need additional anticoagulation.
authors.affiliation: Department of Orthopaedic Surgery, Beijing Jishuitan Hospital, Beijing 100035, China.
authors.forename: Ya-Ming
authors.initials: YM
authors.lastname: Chu
authors.forename: Yong
authors.initials: Y
authors.lastname: Dou
authors.forename: Yu-Jun
authors.initials: YJ
authors.lastname: Li
authors.forename: Yi-Xin
authors.initials: YX
authors.lastname: Zhou
mesh_terms: D000368:Aged; D000925:Anticoagulants / Q000627:therapeutic use; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D007866:Leg / Q000098:blood supply*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D016059:Range of Motion, Articular; D012075:Remission, Spontaneous; D020246:Venous Thrombosis / Q000188:drug therapy / Q000209:etiology*
chemical_list: D000925:Anticoagulants; D006493:Heparin