In Search of the Spherical Femoroplasty: Cam Overresection Leads to Inferior Functional Scores Before and After Revision Hip Arthroscopic Surgery
Authors: Mansor Y, Perets I, Close MR, Mu BH, Domb BG
Journal: Am J Sports Med. 2018 Jul;46(9):2061-2071.
DOI: 10.1177/0363546518779064 | PMID: 29924630
Background
This study assesses the impact of cam overresection during femoroplasty on clinical outcomes after revision hip arthroscopy, examining functional scores and rates of conversion to total hip arthroplasty (THA).
Methods
Patients undergoing revision arthroscopy were categorized into overresection (OR), underresection (UR), and neutral groups based on femoroplasty accuracy. Outcomes and THA conversion rates were compared.
Key Findings
- The OR group had significantly worse pre- and postoperative functional scores compared to UR.
- More than 30% of OR patients progressed to THA, whereas none of the UR group did.
- Precise femoroplasty correlated with better clinical outcomes.
Conclusions
Cam overresection damages hip function and raises the risk of requiring THA, underscoring the critical need for surgical precision in femoroplasty.
What Does This Mean for Providers?
Providers must carefully balance femoroplasty extent to avoid overresection, which compromises the labral seal and joint function. Accurate preoperative planning and intraoperative assessment are vital to optimize outcomes and reduce revision and THA rates.