Cam over-resection more common than under-resection in failed hip arthroscopy

ByHunter Firment

Fact checked byGina Brockenbrough, MA

Key takeaways:

In 2010, the ratio of under-resection to over-resection for revision hip arthroscopy was 4:1.
By 2020, the ratio flipped in favor of over-resection to 2.3:1.

DENVER — Results presented here showed cam over-resection has become more than twice as common as cam under-resection among patients presenting for failed hip arthroscopy.

“We know that over-resections predict poorer outcomes and are difficult to fix and, hence, are something we want to avoid,” Benjamin G. Domb, MD, founder and chair of the American Hip Institute, said in his presentation at the American Orthopaedic Society for Sports Medicine Annual Meeting. “We should teach our fellows and residents caution and meticulousness in performing a surgical femoroplasty.”

Hip infection — Cam over-resection has become more than twice as common as cam under-resection among patients presenting for failed hip arthroscopy. *Image: Adobe Stock*

To determine the prevalence of femoral resection types over time, Domb and colleagues retrospectively analyzed data for 622 hips from patients undergoing revision hip arthroscopy for residual femoroacetabular impingement between February 2008 and June 2022.

Benjamin G. Domb

Domb and colleagues defined over-resection as a resection measuring 5% or more of the femoral head diameter, under-resection as a resection with an alpha angle greater than 60° and neutral resection as a resection with an alpha angle less than 60° without over-resection.

Domb said mean prevalence rates were 48% for neutral resection, 31% for under-resection and 21% for over-resection from 2008 to 2022. According to Domb, during the time period, under-resection decreased significantly while neutral resection and over-resection both increased significantly.

“The steadily decreasing under-resection was negatively correlated with the increasing over-resection and neutral resections,” Domb said. “The ratio of under-resection to over-resection reversed entirely. It was four to one more under-resections in 2010, [and] it was greater than two to one more over-resections in 2020.”

Published by:

Sources/Disclosures

Collapse

Source:

Domb BG, et al. Paper 18. Presented at: American Orthopaedic Society for Sports Medicine Annual Meeting; July 10-14, 2024; Denver.

Disclosures: Domb reports receiving IP royalties from Arthrex, DJO Global, Medacta and Orthomerica; receiving research support from Arthrex, Medacta, Ossur and Stryker; receiving other financial or material support from Arthrex and Stryker; being a paid presenter or speaker for Arthrex and Stryker; being a paid consultant for Arthrex; being a board or committee member for the Arthroscopy Association of North America Learning Center Committee, the American Hip Institute Research Foundation and Arthroscopy; and being on the editorial or governing board for Arthroscopy.

American Orthopaedic Society for Sports Medicine Annual Meeting

Read more

Cam over-resection more common than under-resection in failed hip arthroscopy

Key takeaways:

Related Content