Skip to main content
Top
Published in: International Orthopaedics 4/2018

01-04-2018 | Original Paper

Arthroscopic versus open treatment of cam-type femoro-acetabular impingement: retrospective cohort clinical study

Authors: Paulo A. Rego, Vasco Mascarenhas, Filipe S. Oliveira, Pedro C. Pinto, Eduardo Sampaio, Jacinto Monteiro

Published in: International Orthopaedics | Issue 4/2018

Login to get access

Abstract

Purpose

The purpose of this study was to determine if there were significant differences between patients submitted to hip arthroscopy (HA) and surgical hip dislocation (SHD) to treat femoro-acetabular impingement (FAI), which variables were significantly associated with hip function before surgery and those predictive of the applied functional outcome scale and its variation rate after surgery.

Methods

We selected 198 patients treated with HA or SHD with a mean follow-up of 59 months. Inclusion criteria were ages 18–50 years, isolated FAI cam morphology and complete clinical and radiologic documentation. The subjective outcome measure used was the nonarthritic hip score (NAHS). We compared pre-operative and post-operative NAHS, alpha angles and complication rates. Multiple linear regression analyses were performed to find which variables could influence NAHS values.

Results

The mean alpha-angle value improved from 71.5° to 40.8°, and mean NAHS improved from 50 to 83 points, with no difference between groups (HA/SHD). We found only a 16.9% influence rate on the pre-operative score, explained by variables of gender/pre-operative alpha angle and presence of degenerative changes/age. The influence rate on the NAHS variation ratio after surgery was 62.8%, explained by the variables of pre-operative score, type of surgery and type of surgery/alpha angle. The complication rate was 7%.

Conclusions

FAI surgery can be considered effective in improving patient symptoms. There were no differences in clinical or radiographic results between techniques. We could more accurately predict the variation ratio of NAHS after surgery than its pre-operative value.
Literature
1.
go back to reference Ganz R, Gill TJ, Gautier E, Ganz K, Krügel N, Berlemann U (2001) Surgical dislocation of the adult hip a technique with full access to the femoral head and acetabulum without the risk of avascular necrosis. J Bone Joint Surg Br 83(8):1119–1124CrossRefPubMed Ganz R, Gill TJ, Gautier E, Ganz K, Krügel N, Berlemann U (2001) Surgical dislocation of the adult hip a technique with full access to the femoral head and acetabulum without the risk of avascular necrosis. J Bone Joint Surg Br 83(8):1119–1124CrossRefPubMed
3.
go back to reference Ganz R, Huff TW, Leunig M (2009) Extended retinacular soft-tissue flap for intra-articular hip surgery: surgical technique, indications, and results of application. Instr Course Lect 58:241–255PubMed Ganz R, Huff TW, Leunig M (2009) Extended retinacular soft-tissue flap for intra-articular hip surgery: surgical technique, indications, and results of application. Instr Course Lect 58:241–255PubMed
4.
go back to reference Schoenecker PL, Clohisy JC, Millis MB, Wenger DR (2011) Surgical management of the problematic hip in adolescent and young adult patients. J Am Acad Orthop Surg 19(5):275–286CrossRefPubMed Schoenecker PL, Clohisy JC, Millis MB, Wenger DR (2011) Surgical management of the problematic hip in adolescent and young adult patients. J Am Acad Orthop Surg 19(5):275–286CrossRefPubMed
10.
go back to reference Busse J, Gasteiger W, Tönnis D (1972) Significance of the “summarized hip factor” in the diagnosis and prognosis deformed hip joints. Arch Orthop Unfallchir 72(3):245–252CrossRefPubMed Busse J, Gasteiger W, Tönnis D (1972) Significance of the “summarized hip factor” in the diagnosis and prognosis deformed hip joints. Arch Orthop Unfallchir 72(3):245–252CrossRefPubMed
15.
go back to reference Mascarenhas VV, Rego P, Dantas P, Gaspar A, Soldado F, Consciência JG (2016) Cam deformity and the omega angle, a novel quantitative measurement of femoral head-neck morphology: a 3D CT gender analysis in asymptomatic subjects. Eur Radiol. https://doi.org/10.1007/s00330-016-4530-0 Mascarenhas VV, Rego P, Dantas P, Gaspar A, Soldado F, Consciência JG (2016) Cam deformity and the omega angle, a novel quantitative measurement of femoral head-neck morphology: a 3D CT gender analysis in asymptomatic subjects. Eur Radiol. https://​doi.​org/​10.​1007/​s00330-016-4530-0
19.
go back to reference Halim A, Badrinath R, Carter CW (2015) The importance of sex of patient in the management of femoroacetabular impingement. Am J Orthop (Belle Mead NJ) 44(4):172–175 Halim A, Badrinath R, Carter CW (2015) The importance of sex of patient in the management of femoroacetabular impingement. Am J Orthop (Belle Mead NJ) 44(4):172–175
22.
go back to reference McCarthy JC, Lee J-A (2006) Hip arthroscopy: indications, outcomes, and complications. Instr Course Lect 55:301–308PubMed McCarthy JC, Lee J-A (2006) Hip arthroscopy: indications, outcomes, and complications. Instr Course Lect 55:301–308PubMed
Metadata
Title
Arthroscopic versus open treatment of cam-type femoro-acetabular impingement: retrospective cohort clinical study
Authors
Paulo A. Rego
Vasco Mascarenhas
Filipe S. Oliveira
Pedro C. Pinto
Eduardo Sampaio
Jacinto Monteiro
Publication date
01-04-2018
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 4/2018
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-017-3735-4

Other articles of this Issue 4/2018

International Orthopaedics 4/2018 Go to the issue