Impact of Femoroacetabular Impingement Morphology on Gait Assessment in Symptomatic Patients

Gary J. Farkas, Gregory L. Cvetanovich, Kumar Rajan, Alejandro A. Espinoza Orías, Shane J. Nho

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Background: Gait is abnormal in patients with femoroacetabular impingement (FAI). To date, studies have not correlated radiographic FAI morphology with gait abnormalities. Hypothesis: Gait abnormalities in FAI patients will be associated with radiographic FAI morphology. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Patients with symptomatic FAI (n = 20) underwent radiographic and gait analysis. Exclusion criteria included previous injuries or surgeries to the lower extremities or lumbar spine as well as bilateral symptomatic FAI. The alpha angle (AA) and center-edge angle (CEA) were measured on anteroposterior (AP) pelvis, Dunn lateral, and false-profile radiographs, and inter- and intraobserver variability was determined. Motion analysis techniques were used to obtain gait data including 3-dimensional kinematic and kinetic data. Descriptive analysis was performed using Spearman correlations for morphologic measurements. A stepwise regression model was used to examine the association of gait measures with AA and CEA. Results: Intraobserver agreement for the AA and CEA was 0.92 (CI, 0.80-0.97) and 0.90 (CI, 0.76-0.96), while interobserver agreement for the angles was 0.96 (CI, 0.89-0.98) and 0.96 (CI, 0.90-0.98), respectively. Descriptive analysis suggested correlations between AA and peak external hip and knee external rotation moments, maximum ankle flexion angle, and ankle range of motion (range, –0.51 to 0.42; P < 0.0001). The CEA correlated with stride, peak external ankle eversion and inversion moments, peak external knee extension moment, and peak external hip flexion moment (range, –0.44 to 0.51; P < 0.0001). We found that gait variables accounted for a large amount of variation in AA (8 variables accounted for 87% variation) and in CEA (7 variables accounted for 82% variation). Conclusion: Lower extremity gait parameters correlate highly with radiographic FAI morphology in symptomatic FAI patients. Clinical Relevance: Gait abnormalities are present in FAI patients and may be a useful measure in outcome studies.

Original languageEnglish (US)
Pages (from-to)429-436
Number of pages8
JournalSports Health
Volume7
Issue number5
DOIs
StatePublished - Jan 1 2015
Externally publishedYes

Fingerprint

Femoracetabular Impingement
Gait
Ankle
Hip
Lower Extremity
Knee
Observer Variation
Articular Range of Motion
Pelvis
Biomechanical Phenomena
Spine
Cross-Sectional Studies
Outcome Assessment (Health Care)

Keywords

  • alpha angle
  • center-edge angle
  • femoroacetabular impingement
  • gait
  • morphology

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Impact of Femoroacetabular Impingement Morphology on Gait Assessment in Symptomatic Patients. / Farkas, Gary J.; Cvetanovich, Gregory L.; Rajan, Kumar; Espinoza Orías, Alejandro A.; Nho, Shane J.

In: Sports Health, Vol. 7, No. 5, 01.01.2015, p. 429-436.

Research output: Contribution to journalArticle

Farkas, Gary J. ; Cvetanovich, Gregory L. ; Rajan, Kumar ; Espinoza Orías, Alejandro A. ; Nho, Shane J. / Impact of Femoroacetabular Impingement Morphology on Gait Assessment in Symptomatic Patients. In: Sports Health. 2015 ; Vol. 7, No. 5. pp. 429-436.
@article{0b8d76c30bef4db29a4e4164720ba8f7,
title = "Impact of Femoroacetabular Impingement Morphology on Gait Assessment in Symptomatic Patients",
abstract = "Background: Gait is abnormal in patients with femoroacetabular impingement (FAI). To date, studies have not correlated radiographic FAI morphology with gait abnormalities. Hypothesis: Gait abnormalities in FAI patients will be associated with radiographic FAI morphology. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Patients with symptomatic FAI (n = 20) underwent radiographic and gait analysis. Exclusion criteria included previous injuries or surgeries to the lower extremities or lumbar spine as well as bilateral symptomatic FAI. The alpha angle (AA) and center-edge angle (CEA) were measured on anteroposterior (AP) pelvis, Dunn lateral, and false-profile radiographs, and inter- and intraobserver variability was determined. Motion analysis techniques were used to obtain gait data including 3-dimensional kinematic and kinetic data. Descriptive analysis was performed using Spearman correlations for morphologic measurements. A stepwise regression model was used to examine the association of gait measures with AA and CEA. Results: Intraobserver agreement for the AA and CEA was 0.92 (CI, 0.80-0.97) and 0.90 (CI, 0.76-0.96), while interobserver agreement for the angles was 0.96 (CI, 0.89-0.98) and 0.96 (CI, 0.90-0.98), respectively. Descriptive analysis suggested correlations between AA and peak external hip and knee external rotation moments, maximum ankle flexion angle, and ankle range of motion (range, –0.51 to 0.42; P < 0.0001). The CEA correlated with stride, peak external ankle eversion and inversion moments, peak external knee extension moment, and peak external hip flexion moment (range, –0.44 to 0.51; P < 0.0001). We found that gait variables accounted for a large amount of variation in AA (8 variables accounted for 87{\%} variation) and in CEA (7 variables accounted for 82{\%} variation). Conclusion: Lower extremity gait parameters correlate highly with radiographic FAI morphology in symptomatic FAI patients. Clinical Relevance: Gait abnormalities are present in FAI patients and may be a useful measure in outcome studies.",
keywords = "alpha angle, center-edge angle, femoroacetabular impingement, gait, morphology",
author = "Farkas, {Gary J.} and Cvetanovich, {Gregory L.} and Kumar Rajan and {Espinoza Or{\'i}as}, {Alejandro A.} and Nho, {Shane J.}",
year = "2015",
month = "1",
day = "1",
doi = "10.1177/1941738115592827",
language = "English (US)",
volume = "7",
pages = "429--436",
journal = "Sports Health",
issn = "1941-7381",
publisher = "Sage Periodicals Press",
number = "5",

}

TY - JOUR

T1 - Impact of Femoroacetabular Impingement Morphology on Gait Assessment in Symptomatic Patients

AU - Farkas, Gary J.

AU - Cvetanovich, Gregory L.

AU - Rajan, Kumar

AU - Espinoza Orías, Alejandro A.

AU - Nho, Shane J.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Background: Gait is abnormal in patients with femoroacetabular impingement (FAI). To date, studies have not correlated radiographic FAI morphology with gait abnormalities. Hypothesis: Gait abnormalities in FAI patients will be associated with radiographic FAI morphology. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Patients with symptomatic FAI (n = 20) underwent radiographic and gait analysis. Exclusion criteria included previous injuries or surgeries to the lower extremities or lumbar spine as well as bilateral symptomatic FAI. The alpha angle (AA) and center-edge angle (CEA) were measured on anteroposterior (AP) pelvis, Dunn lateral, and false-profile radiographs, and inter- and intraobserver variability was determined. Motion analysis techniques were used to obtain gait data including 3-dimensional kinematic and kinetic data. Descriptive analysis was performed using Spearman correlations for morphologic measurements. A stepwise regression model was used to examine the association of gait measures with AA and CEA. Results: Intraobserver agreement for the AA and CEA was 0.92 (CI, 0.80-0.97) and 0.90 (CI, 0.76-0.96), while interobserver agreement for the angles was 0.96 (CI, 0.89-0.98) and 0.96 (CI, 0.90-0.98), respectively. Descriptive analysis suggested correlations between AA and peak external hip and knee external rotation moments, maximum ankle flexion angle, and ankle range of motion (range, –0.51 to 0.42; P < 0.0001). The CEA correlated with stride, peak external ankle eversion and inversion moments, peak external knee extension moment, and peak external hip flexion moment (range, –0.44 to 0.51; P < 0.0001). We found that gait variables accounted for a large amount of variation in AA (8 variables accounted for 87% variation) and in CEA (7 variables accounted for 82% variation). Conclusion: Lower extremity gait parameters correlate highly with radiographic FAI morphology in symptomatic FAI patients. Clinical Relevance: Gait abnormalities are present in FAI patients and may be a useful measure in outcome studies.

AB - Background: Gait is abnormal in patients with femoroacetabular impingement (FAI). To date, studies have not correlated radiographic FAI morphology with gait abnormalities. Hypothesis: Gait abnormalities in FAI patients will be associated with radiographic FAI morphology. Study Design: Cross-sectional study. Level of Evidence: Level 4. Methods: Patients with symptomatic FAI (n = 20) underwent radiographic and gait analysis. Exclusion criteria included previous injuries or surgeries to the lower extremities or lumbar spine as well as bilateral symptomatic FAI. The alpha angle (AA) and center-edge angle (CEA) were measured on anteroposterior (AP) pelvis, Dunn lateral, and false-profile radiographs, and inter- and intraobserver variability was determined. Motion analysis techniques were used to obtain gait data including 3-dimensional kinematic and kinetic data. Descriptive analysis was performed using Spearman correlations for morphologic measurements. A stepwise regression model was used to examine the association of gait measures with AA and CEA. Results: Intraobserver agreement for the AA and CEA was 0.92 (CI, 0.80-0.97) and 0.90 (CI, 0.76-0.96), while interobserver agreement for the angles was 0.96 (CI, 0.89-0.98) and 0.96 (CI, 0.90-0.98), respectively. Descriptive analysis suggested correlations between AA and peak external hip and knee external rotation moments, maximum ankle flexion angle, and ankle range of motion (range, –0.51 to 0.42; P < 0.0001). The CEA correlated with stride, peak external ankle eversion and inversion moments, peak external knee extension moment, and peak external hip flexion moment (range, –0.44 to 0.51; P < 0.0001). We found that gait variables accounted for a large amount of variation in AA (8 variables accounted for 87% variation) and in CEA (7 variables accounted for 82% variation). Conclusion: Lower extremity gait parameters correlate highly with radiographic FAI morphology in symptomatic FAI patients. Clinical Relevance: Gait abnormalities are present in FAI patients and may be a useful measure in outcome studies.

KW - alpha angle

KW - center-edge angle

KW - femoroacetabular impingement

KW - gait

KW - morphology

UR - http://www.scopus.com/inward/record.url?scp=84940181769&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940181769&partnerID=8YFLogxK

U2 - 10.1177/1941738115592827

DO - 10.1177/1941738115592827

M3 - Article

VL - 7

SP - 429

EP - 436

JO - Sports Health

JF - Sports Health

SN - 1941-7381

IS - 5

ER -