Document Detail

Clinical and radiographic outcomes of minimally invasive total knee arthroplasty through a lateral approach.
MedLine Citation:
PMID:  21085929     Owner:  NLM     Status:  In-Data-Review    
PURPOSE: With increasing confidence and surgical experience, minimally invasive surgery (MIS) in total knee arthroplasty (TKA) is now being applied to more complicated cases. The present study assessed the feasibility of MIS-TKA using a lateral approach for valgus knees.
METHODS: Subjects comprised 26 patients with valgus knees who underwent MIS-TKA using a lateral subvastus approach. Five cases required a 1-cm snip of vastus lateralis obliquus, to shift the patella medially without eversion. Clinical scores and radiographic parameters of lateral MIS-TKA were examined and compared with those of 26 medial MIS-TKAs matched for preoperative patient characteristics.
RESULTS: The lateral MIS-TKA group showed slightly longer operative time and larger skin incision than the medial MIS-TKA group. Nevertheless, myoglobin index and pain on a visual analog scale on postoperative day 7 were significantly lower in the lateral MIS-TKA group than in the medial MIS-TKA group. Postoperative improvement of clinical scores was quite comparable between lateral and medial MIS-TKA groups. Radiographic assessment revealed that tibiofemoral mechanical axis aligned within ±3° from ideal in 24 of 26 patients after lateral MIS-TKA. MIS technique-related complications occurred in only 1 patient presenting with subsidence of the tibial component, due to malpositioning of the tibial component.
CONCLUSION: From the perspectives of postoperative pain, clinical scores, radiographic accuracy, and postoperative complication rate, lateral MIS-TKA achieved comparable or superior results to medial MIS-TKA. This technique may offer a promising technical option that can be utilized for most patients with valgus knee deformity.
Yasuo Niki; Hideo Matsumoto; Akihiro Hakozaki; Hiroya Kanagawa; Yoshiaki Toyama; Yasunori Suda
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Publication Detail:
Type:  Journal Article     Date:  2010-11-18
Journal Detail:
Title:  Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA     Volume:  19     ISSN:  1433-7347     ISO Abbreviation:  Knee Surg Sports Traumatol Arthrosc     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-05-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9314730     Medline TA:  Knee Surg Sports Traumatol Arthrosc     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  973-9     Citation Subset:  IM    
Department of Orthopaedic Surgery, Keio University, 35, Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan,
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