Physical impairments in symptomatic femoroacetabular impingement: A Systematic review of the evidence

Freke, Matthew; Kemp, Joanne L; Svege, Ida; Risberg, May Arna; Semciw, Adam; Crossley, Kay M

doi:10.1016/j.jsams.2017.01.050

Cited by 32 publications

(74 citation statements)

References 21 publications

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“…These differences may be due to the variations in training load with differences in the proportion of kicking on the dominant and nondominant legs during adolescence. [4][5][6] When comparing the symptomatic and asymptomatic sides there was no significant difference between groups which supports the results presented in the systematic review by Freke et al 2016. 23 However, there was a non-significant trend towards decreased hip IR on the symptomatic side, independent of the alpha angle, which has been reported previously by Tak et al 2016 in professional soccer players.…”

Section: Discussionsupporting

confidence: 83%

“…[4][5][6] When comparing the symptomatic and asymptomatic sides there was no significant difference between groups which supports the results presented in the systematic review by Freke et al 2016. 23 However, there was a non-significant trend towards decreased hip IR on the symptomatic side, independent of the alpha angle, which has been reported previously by Tak et al 2016 in professional soccer players. 31 While not statistically significant having a mean difference of 11 degrees between symptomatic and non-symptomatic sides may be considered clinically significant.…”

Section: Discussionsupporting

confidence: 83%

“…This lack of correlation further supports that cam morphology is not associated with a reduction in hip joint range of motion. 23 It may also be possible that a non-linear relationship exists between clinical measures of hip range of motion and cam morphology, as cam morphology has been shown to have a binomial distribution. 29 However, as only four hips had a cam morphology in this study, it was not possible to evaluate this supposition, and larger cohort studies are needed to investigate this further.…”

Section: Discussionmentioning

confidence: 99%

“…19 Cam type morphology has been associated with decreased internal rotation (IR) of the hip 20 21 and correlations between clinical testing of hip IR and the degree of cam morphology as measured by the alpha angle on x-ray have been reported as ranging from -0.35 to -0.59. 22 However, a recent systematic review did not support differences in IR range between people with symptomatic FAIS and asymptomatic controls 23 making uncertain the validity of clinical screening for these morphologies.…”

Section: Introductionmentioning

confidence: 99%

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Clinical Measures of Hip Range of Motion Do Not Correlate With the Degree of Cam Morphology in Semi-Elite Australian Footballers: A Cross-Sectional Study

Murphy

Kemp

Smith

et al. 2017

Intl J Sports Phys Ther

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Background: Clinical testing to determine the presence of a cam morphology is becoming more common however the correlation between hip range of motion and the degree of cam morphology remains controversial in the literature. The prevalence of a cam morphology in athletes has been reported as higher than in the general population but the prevalence of cam morphology has not been reported in Australian Football (AF). Purpose:The purpose of this study was to determine the correlation between hip range of motion and hip alpha angle and report the proportion of players with a cam morphology in a sample of AF players.Design: Cross-sectional Study.Methods: Twenty-one semi-elite AF players (42 hips) from the Peel Thunder Football Club were included in this study. A hip Flexion Internal Rotation (IR) test and a modified maximal squat test using the difference in depth of squat in hip internal and external rotation were used. These measures were then compared to alpha angles on 90 degree Dunn view x-rays.Results: Four of the 42 hips (9.5%) had a cam morphology (alpha angle >60 degrees). There was no significant correlation between alpha angle and ROM in a Flexion IR test or the difference in modified maximal squat test depth within this sample of players. Conclusions:The proportion of cam morphology seems to be lower in this sample than the previously reported prevalence in other sports. The lack of correlations between hip range and hip alpha angle in players means that screening hips using clinical measures to detect cam morphology associated with poor hip range of motion may be inaccurate. Level of Evidence: Level 3a

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Section: Discussionsupporting

confidence: 83%

Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Clinical Measures of Hip Range of Motion Do Not Correlate With the Degree of Cam Morphology in Semi-Elite Australian Footballers: A Cross-Sectional Study

Murphy

Kemp

Smith

et al. 2017

Intl J Sports Phys Ther

View full text Add to dashboard Cite

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“…22 Athletic movement requires appropriate hip mobility. When limited, altered motor control 23 may lead to compensatory redistributions of force across the pelvis in order to perform the desired sport-specific movement. 24 For example, hip ROM limitations associated with cam morphology has been linked to increased motion and stress at the pubic symphysis 25,26 Aside from morphology, regional contributions may also affect hip mobility, as the posture of the pelvis can further reduce the ROM available at the hip 27 while those with FAI syndrome demonstrate a decreased ability to functionally rotate the pelvis posteriorly.…”

Section: Introductionmentioning

confidence: 99%

A Combined Treatment Approach Emphasizing Impairment-Based Manual Therapy and Exercise for Hip-Related Compensatory Injury in Elite Athletes: A Case Series

Short

Strack

et al. 2017

Intl J Sports Phys Ther

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Adductor magnus: An EMG investigation into proximal and distal portions and direction specific action

et al. 2018

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Cadaveric studies indicate that adductor magnus is structurally partitioned into at least two regions. The aim of this study was to investigate the direction-specific actions of proximal and distal portions of adductor magnus, and in doing so determine if these segments have distinct functional roles. Fine-wire EMG electrodes were inserted into two portions of adductor magnus of 12 healthy young adults. Muscle activity was recorded during maximum voluntary isometric contractions (MVICs) across eight tests (hip flexion/extension, internal/external rotation, abduction, and adduction at 0°, 45°, and 90° hip flexion). Median activity within each action (normalized to peak) was compared between segments using repeated measures nonparametric tests (α = 0.05). An effect size (ES = z-score/√sample size) was calculated to determine the magnitude of difference between muscle segments. The relative contribution of each muscle segment differed significantly during internal rotation (P < 0.001; ES = 0.88) and external rotation (P = 0.003, ES = 0.79). The distal portion was most active during extension [median (interquartile range); 100(0)% MVIC)] and internal rotation [58(34)% MVIC]. The proximal portion was most active during extension [100(49)% MVIC] and adduction [59(64)%MVIC], with low level activity during external rotation [15(41)%MVIC]. This study suggests that adductor magnus has at least two functionally unique regions. Differences were most evident during rotation. The different direction-specific actions may imply that each segment performs separate roles in hip stability and movement. These findings may have implications on injury prevention and rehabilitation for adductor-related groin injuries, hamstring strain injury, and hip pathology. Clin. Anat. 31:535-543, 2018. © 2018 Wiley Periodicals, Inc.

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Physical impairments in symptomatic femoroacetabular impingement: A Systematic review of the evidence

Cited by 32 publications

References 21 publications

Clinical Measures of Hip Range of Motion Do Not Correlate With the Degree of Cam Morphology in Semi-Elite Australian Footballers: A Cross-Sectional Study

Clinical Measures of Hip Range of Motion Do Not Correlate With the Degree of Cam Morphology in Semi-Elite Australian Footballers: A Cross-Sectional Study

A Combined Treatment Approach Emphasizing Impairment-Based Manual Therapy and Exercise for Hip-Related Compensatory Injury in Elite Athletes: A Case Series

Adductor magnus: An EMG investigation into proximal and distal portions and direction specific action

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