Is minimally invasive surgery less invasive in total hip replacement? A pilot study

Area of Science:

• Orthopedic Surgery
• Surgical Innovation
• Biomarkers of Tissue Injury

Background:

• Minimally invasive surgery (MIS) is proposed to be less traumatic than standard techniques in total hip replacement (THR).
• The anterior MIS approach is compared against the standard posterolateral (PL) approach to evaluate trauma levels.

Purpose of the Study:

• To compare the inflammatory response and muscle damage between anterior MIS and PL approaches in THR.
• To assess differences in blood loss between the two surgical techniques.

Main Methods:

• A comparative study involving 20 patients undergoing THR (10 MIS anterior, 10 PL).
• Measurement of interleukin-6 (IL-6), heart-type fatty acid binding protein (H-FABP), and hemoglobin (Hb) levels pre-operatively and at multiple post-operative time points.
• Analysis of inflammatory markers, muscle damage indicators, and blood loss.

Main Results:

• No significant differences were observed in IL-6 levels, H-FABP concentrations, or Hb levels between the MIS and PL groups.
• Both groups showed similar patterns of increase and decrease in inflammatory and muscle damage markers post-operatively.
• Blood loss was comparable between the anterior MIS and PL approaches.

Conclusions:

• The anterior MIS approach for THR did not demonstrate reduced inflammation or muscle damage compared to the standard PL approach.
• The findings suggest that the term 'minimally invasive' may be questionable regarding reduced trauma in THR.
• Further investigation is needed, considering potential learning curve effects, to definitively assess the trauma associated with MIS in THR.