Current perspectives of south african orthopaedic surgeons to the direct anterior approach in total hip arthroplasty

Abstract

Background: Despite the global increase in popularity for the use of the Direct Anterior Approach (DAA) for Total Hip Arthroplasty (THA),  the current beliefs and reasons for its use and disuse amongst South African orthopaedic surgeons is not well understood.

Objective: To  determine the perspectives regarding DAA compared to other surgical approaches to THA.

Methods: We conducted an anonymous  online survey sent to all current members of the South African Orthopedic Association (SAOA).

Results: The response rate was 24.25%  (n=194). There were 76 (39.18%) respondents that have performed DAA (DAA Performers) and 118 (60.82%) that have never performed  DAA (DAA nonperformers). A proportion of 50% and 11.84% of DAA performers were between 30 to 45 years and older than 60 years of  age, respectively (p<0.000). The DAA is the preferred approach to THA for 36.84% (n=28) of DAA performers, whilst 63.16% (n=48) prefer  an alternative approach. Both DAA performers who prefer DAA and those who prefer alternative approaches consider DAA more  satisfactory for length of hospital stay (p<0.000) and short-term functional outcomes (p=0.002) compared to other surgical approaches.  For DAA non-performers, the primary reasons for not performing DAA THA were inexperience in surgical technique (72.09%), increased  operative time (12.79%), unsatisfactory outcomes (27.91%) and learning curve (67.44%). There were 5 (18.52%) and 30 (70.33%) surgeons who have been in clinical practice for more than 10 years that do and do not intend to use DAA in the future, respectively (p<0.000).  

Conclusion: The trends of the adoption of the DAA by South African orthopaedic surgeons show increasing popularity, similar to patterns  seen in the United Kingdom and the United States of America. Younger surgeons are more likely to perform the DAA THA whilst  more experienced surgeons are less likely to deviate from their current standard of practice.