[A meta-analysis for the efficacy and safety of drainage after primary total knee arthroplasty].
OBJECTIVE
To evaluate the efficacy and safety of draiange after primary total knee arthroplasty (TKA).


METHODS
Comparative studies between with and without drainage after primary TKA were retrieved from Cochrane Library, PubMed, Medline, EMASE, CBM, Highwire, CNKI, VIP and Digital Periodicals in Wanfang Data. All randomized controlled trials were included for meta-analysis with RevMan 5.1.5 software.


RESULTS
A total of 9 studies involving 7 in foreign languages and 2 in Chinese were identified. There were knee replacement (n = 706), drainage (n = 359) and non-drainage (n = 347). The results of meta-analysis indicated that no inter-group statistical difference existed in the counts of wound infection, deep venous thrombosis, hemoglobin value decrease at Day 7 post-operation, knee pain at Days 7 and 14 post-operation, post-operative knee range-of-movement or length of hospital stay (P > 0.05). And there were statistical differences with respects to total blood loss, count of blood transfusions, count of skin ecchymosis, increasing rate of knee circumference at Day post-operation (P < 0.05).


CONCLUSIONS
Non-routine placement of drainage after primary uncomplicated TKA may be preferred. However, for extensive release and primary orthopedics, drainage is still necessary. And a surgeon should weigh its pros and cons.
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China.
Xiaomin
X
Zhang
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China.
Guoqing
G
Li
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China.
Jun
J
Ma
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China.
Tar
T
Muhe
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China.
Guoqiang
G
Wang
Department of Bone and Joint Surgery, First Affiliated Hospital, Xinjiang Medical University, Urumqi 830054, China. Email: xjbone@21cn.com.
Li
L
Cao
D019645:Arthroplasty, Replacement, Knee; D001803:Blood Transfusion; D004322:Drainage; D006801:Humans; D007719:Knee Joint; D007902:Length of Stay; D011184:Postoperative Period; D020246:Venous Thrombosis