scholarly journals Paper 7: Effect of Cam-Type Femoroacetabular Impingement on Hip Joint Kinematics

2012 ◽  
Vol 28 (6) ◽  
pp. e46-e47
Author(s):  
Michael Kenneth Gilbart ◽  
Laura Callan ◽  
David R. Wilson
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Joint Kinematics

Validation of a method to measure three-dimensional hip joint kinematics in subjects with femoroacetabular impingement

2019 ◽  
pp. 112070001988354
Author(s):  
Thomas R Ward ◽  
Mafruha M Hussain ◽  
Mark Pickering ◽  
Diana Perriman ◽  
Al Burns ◽  
...  
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Gold Standard ◽  
Dynamic Assessment ◽  
Three Dimensional ◽  
3D Models ◽  
Joint Kinematics ◽  
Registration Method ◽  
Kinematic Measurement ◽  
Significant Difference

Introduction: A kinematic measurement method combining dynamic motion and imaging, which captures the behaviour of the hip at terminal motion, may offer improved diagnostic accuracy and enhance our understanding of the mechanics of femoroacetabular impingement (FAI). Methods: 3 embalmed cadaveric hip/pelvis specimens with implanted Roentgen Stereophotogrammetric Analysis (RSA) beads were mounted on a custom rig and imaged with a fluoroscope in four poses to simulate a clinical impingement examination: in hip extension and in three positions: near impingement, early impingement and late impingement while simulating a flexion/adduction/internal rotation manoeuvre. Hip joint kinematics were measured using 2 methods and compared: RSA (gold standard) and a custom 3-dimensional to 2-dimensional (3D–2D) image registration method which matches 3D models developed from CT to 2D fluoroscopic images. Results: Using RSA as the gold standard, bias and precision of hip joint rotations measured using 3D–2D registration demonstrated maximums of 1.64° and 3.96°, respectively. However, if the single outlier was removed, bias and precision were 0.55° and 1.38°. Bias and precision of translations had maximums of 0.51 mm and 0.77 mm, respectively. Conclusions: This 3D to 2D registration method may offer a clinically useful solution for dynamic assessment of hip impingement. If 5-mm translation and 10° of rotation represent a clinically significant difference in hip kinematics, the method’s accuracy of approximately 1 mm displacement and 1° rotation should enable detection of significant clinical differences.

scholarly journals In Vivo Pelvic and Hip Joint Kinematics in Patients With Cam Femoroacetabular Impingement Syndrome: A Dual Fluoroscopy Study

2019 ◽  
Vol 38 (4) ◽  
pp. 823-833 ◽  
Author(s):  
Penny R. Atkins ◽  
Niccolo M. Fiorentino ◽  
Joseph A. Hartle ◽  
Stephen K. Aoki ◽  
Christopher L. Peters ◽  
...  
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Joint Kinematics ◽  
Impingement Syndrome ◽  
Femoroacetabular Impingement Syndrome

scholarly journals Hip joint motion does not change one year after arthroscopic osteochondroplasty in patients with femoroacetabular impingement evaluated with dynamic radiostereometry

2022 ◽  
Vol 9 (1) ◽  
Author(s):  
Lars Hansen ◽  
Sepp de Raedt ◽  
Peter Bo Jørgensen ◽  
Bjarne Mygind-Klavsen ◽  
Lone Rømer ◽  
...  
Keyword(s):  
Internal Rotation ◽  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Motion Tracking ◽  
Three Dimensional ◽  
Joint Kinematics ◽  
Bone Volume ◽  
Clinical Effects ◽  
Level Of Evidence

Abstract Purpose Dynamic radiostereometric analysis (dRSA) enables precise non-invasive three-dimensional motion-tracking of bones for assessment of joint kinematics. Hereby, the biomechanical effects of arthroscopic osteochondroplasty of the hip (ACH) can be evaluated in patients with femoroacetabular impingement (FAI). The aim was to investigate the pre- and postoperative range of motion (ROM) and the CT bone volume removed (BV) after ACH. We hypothesize increase in ROM 1 year after surgery. Methods Thirteen patients (6 female) with symptomatic FAI were included prospectively. The patient’s hips were CT-scanned and CT-bone models were created. Preoperative dRSA recordings were acquired during passive flexion to 90°, adduction, and internal rotation (FADIR). ACH was performed, CT and dRSA were repeated 3 months and 1 year postoperatively. Hip joint kinematics before, and 3 months and 1 year after ACH were compared pairwise. The bone volume removal was quantified and compared to change in ROM. Results Mean hip internal rotation, adduction and flexion were all unchanged after ACH at 1-year follow-up (p > 0.84). HAGOS scores revealed improvement of quality of life (QOL) from 32 to 60 (p = 0.02). The BV was between 406 and 1783 mm3 and did not correlate to post-operative ROM. Conclusions ACH surgery in FAI patients had no impact of ROM at 1-year follow-up. QOL improved significantly. This indicates that the positive clinical effects reported after ACH might be a result of reduced labral stress and cartilage pressure during end-range motion rather than increased ROM. Level of evidence Therapeutic prospective cohort study, level II.

scholarly journals Pathohistologic Changes in Hip Tissues and Clinical-Morphologic Correlations in Diseases Complicated by Femoroacetabular Impingement Syndrome

2014 ◽  
Vol 21 (2) ◽  
pp. 67-73
Author(s):  
V. V Grigorovskiy ◽  
V. V Filipchuk ◽  
M. S Kabatsiy
Keyword(s):  
Femoral Head ◽  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Comparison Study ◽  
Acetabular Labrum ◽  
Aseptic Necrosis ◽  
Association Coefficient ◽  
Absolute Value ◽  
Femoroacetabular Impingement Syndrome ◽  
Fai Syndrome

The purpose of the work was to detect clinical-morphologic correlative dependences in patients with clinically marked femoroacetabular impingement (FAI) syndrome basing on the study of pathomorphologic changes in hip joint tissues, semiquantitative quantification of pathologic changes intensity, frequency analysis of their occurrence in nosologic groups of comparison. Study was performed on specimens of hip joint tissues - femoral head, acetabulum, acetabular labrum and joint capsule, resected during indicated corrective surgeries for femoral head aseptic necrosis and juvenile epiphysiolysis. Clinical-morphologic study revealed various pathologic changes: dystrophic-destructive, ischemic-necrotic and productive-inflammatory. In patients with FAI syndrome clinical and morphologic correlative dependences varied by absolute value, sign and degree of reliability of association coefficient parameters, i.e. groups of patients with certain nosologic units retained the peculiarities of rate and characteristics proportions in correlative dependences

scholarly journals Differences in Hip Joint Biomechanics and Muscle Activation in Individuals With Femoroacetabular Impingement Compared With Healthy, Asymptomatic Individuals: Is Level-Ground Gait Analysis Enough?

2018 ◽  
Vol 6 (5) ◽  
pp. 232596711876982 ◽  
Author(s):  
Derek J. Rutherford ◽  
Janice Moreside ◽  
Ivan Wong
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Muscle Activation ◽  
Gluteus Maximus ◽  
Knee Extensors ◽  
Joint Function ◽  
Asymptomatic Group ◽  
Level Walking ◽  
Hip Function ◽  
Asymptomatic Individuals

Background: Femoroacetabular impingement (FAI) is a recognized cause of hip and groin pain and a significant factor in hip joint function during sport. Objective tests for understanding hip function are lacking in this population. Purpose: To determine whether biomechanical and electromyographic features of hip function during level-ground walking differ between a group diagnosed with FAI and those with no symptoms of FAI. Study Design: Controlled laboratory study. Methods: A total of 20 asymptomatic individuals and 20 individuals with FAI walked on a dual-belt instrumented treadmill at self-selected walking velocities. Sagittal and frontal plane joint motions, moments, and muscle activation for the gluteus medius, gluteus maximus, rectus femoris, and medial and lateral hamstrings were analyzed. Discrete measures were extracted from each biomechanical waveform, and principal component analysis was used to determine hip joint muscle activation and hip adduction moment patterns. Statistical significance was determined by use of Student t tests with Bonferroni adjustments for multiple comparisons (α = .05). Results: Individuals with FAI walked more slowly ( P = .015) and had lower self-reported function ( P < .001). No differences in muscle strength were found between the symptomatic and contralateral legs in the FAI group ( P > .017), but those with FAI had lower strength in the knee extensors and flexors and the hip extensors, flexors, and adductors compared with the asymptomatic group ( P < .017). Individuals with unilateral symptomatic FAI walked with similar biomechanical and hip muscle electromyographic results bilaterally. The only differences found were a greater amplitude of gluteus maximus activation in the FAI symptomatic leg compared with the asymptomatic group and greater medial hamstring activation than lateral hamstring activation in the FAI group in both limbs compared with the asymptomatic group. Conclusion: Individuals with FAI were generally deconditioned and reported significantly more functional limitations. No biomechanical differences existed between groups during level walking, yet hamstring and gluteus maximus activation differed when the symptomatic group was compared with the asymptomatic group. Clinical Relevance: The field lacks objective testing of hip joint function to understand implications of FAI for dynamic movements, particularly with applications to biomechanics and electromyography. Level walking was of limited value for understanding FAI hip function, and the development of a more challenging gait assessment is warranted.

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