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Does minimally invasive surgery improve short-term recovery in total knee arthroplasty?
Tao Cheng1, Tao Liu, Guoyou Zhang
1Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China.
Background:
Concerns have been raised regarding minimally invasive surgery (MIS) and its possible effect on postoperative functional recovery, complications, and survival rate after TKA.
Questions/Purposes:
We specifically asked whether MIS TKA would be associated with (1) increased operative time, (2) reduced blood loss, (3) shortened hospital stay, (4) faster recovery of ROM, (5) higher knee scores, (6) inferior component positioning, and (7) increased complications.
Methods:
We performed a systematic literature search of randomized controlled trials between minimally invasive and standard approaches in TKA that compared operative time, blood loss, ROM, knee scores, component positioning, and complications. We conducted a systematic review and meta-analysis of 13 trials published from 2007 to 2009 of MIS versus standard TKA.
Results:
Patients in the MIS group had longer operating times (10-19 minutes). Mean Knee Society scores were better after MIS than after the standard procedure at 6 and 12 weeks postoperatively, but not after 6 months. Improvement in ROM occurred more rapidly in the MIS group 6 days after TKA but later improvements are not clearly documented. We identified no differences between minimally invasive and standard approaches regarding the short-term overall complications and alignment of femoral and tibial components. However, wound healing problems and infections occurred more frequently in the MIS group.
Conclusions:
MIS leads to faster recovery than conventional surgery with similar rates of component malalignment but is associated with more frequent delayed wound healing and infections. Potential benefits in long-term survival rate and functional improvement require additional investigation. Level of Evidence Level II, therapeutic study (systematic review). See the Guidelines for Authors for a complete description of levels of evidence.
Insights
Minimally invasive surgery (MIS) for total knee arthroplasty (TKA) offers faster initial recovery and improved knee scores. However, it is linked to increased operative time and higher risks of wound healing problems and infections.
Area of Science:
- Orthopedic Surgery
- Arthroplasty Research
- Surgical Technique Comparison
Background:
- Concerns exist regarding the impact of minimally invasive surgery (MIS) on total knee arthroplasty (TKA) outcomes.
- Postoperative functional recovery, complication rates, and survival are key areas of investigation.
Purpose of the Study:
- To evaluate if MIS TKA is associated with longer operative time.
- To assess if MIS TKA leads to reduced blood loss and shorter hospital stays.
- To determine the effects of MIS TKA on range of motion (ROM), knee scores, component positioning, and complication rates.
Main Methods:
- Systematic literature search of randomized controlled trials comparing MIS and standard TKA.
- Meta-analysis of 13 trials published between 2007 and 2009.
- Evaluation of operative time, blood loss, ROM, knee scores, component positioning, and complications.
Main Results:
- MIS TKA demonstrated longer operative times (10-19 minutes).
- Faster initial improvement in ROM and better knee scores at 6 and 12 weeks were observed with MIS TKA.
- No significant differences in short-term overall complications or component alignment were found, but MIS TKA had higher rates of wound healing problems and infections.
Conclusions:
- MIS TKA facilitates quicker initial recovery compared to conventional surgery.
- Component alignment is similar between MIS and standard TKA, but MIS TKA presents increased risks for delayed wound healing and infections.
- Further research is needed to confirm long-term survival benefits and functional improvements with MIS TKA.