scholarly journals Quantification of Acetabular Coverage on 3-Dimensional Reconstructed Computed Tomography Scan Bone Models in Patients With Femoroacetabular Impingement Syndrome: A Descriptive Study

2021 ◽  
Vol 9 (11) ◽  
pp. 232596712110494
Author(s):  
Steven F. DeFroda ◽  
Thomas D. Alter ◽  
Floor Lambers ◽  
Philip Malloy ◽  
Ian M. Clapp ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Femoral Head ◽  
Femoroacetabular Impingement ◽  
Impingement Syndrome ◽  
Acetabular Coverage ◽  
Level Of Evidence ◽  
Average Percentage ◽  
3 Dimensional ◽  
Inferior Aspect ◽  
Femoroacetabular Impingement Syndrome

Background: Accurate assessment of osseous morphology is imperative in the evaluation of patients with femoroacetabular impingement syndrome (FAIS) and hip dysplasia. Through use of computed tomography (CT), 3-dimensional (3D) reconstructed hip models may provide a more precise measurement for overcoverage and undercoverage and aid in the interpretation of 2-dimensional radiographs obtained in the clinical setting. Purpose: To describe new measures of acetabular coverage based on 3D-reconstructed CT scan bone models. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Preoperative CT scans were acquired on the bilateral hips and pelvises of 30 patients before arthroscopic surgical intervention for FAIS. Custom software was used for semiautomated segmentation to generate 3D osseous models of the femur and acetabulum that were aligned to a standard coordinate system. This software calculated percentage of total acetabular coverage, which was defined as the surface area projected onto the superior aspect of the femoral head. The percentage of coverage was also quantified regionally in the anteromedial, anterolateral, posteromedial, and posterolateral quadrants of the femoral head. The acetabular clockface was established by defining 6 o’clock as the inferior aspect of the acetabular notch. Radial coverage was then calculated along the clockface from the 9-o’clock to 5-o’clock positions. Results: The study included 20 female and 10 male patients with a mean age of 33.6 ± 11.7 years and mean body mass index of 27.8 ± 6.3. The average percentage of total acetabular coverage for the sample was 57% ± 6%. Acetabular coverages by region were as follows: anteromedial, 78% ± 7%; anterolateral, 18% ± 7%, posterolateral, 33% ± 13%, and posteromedial, 99% ± 1%. The acetabular coverage ranged from 23% to 69% along the radial clockface from 9 to 5 o’clock. Conclusion: This study demonstrated new 3D measurements to characterize acetabular coverage in patients with FAIS and elucidated the distribution of acetabular coverage according to these measurements.

Surgery is no more effective than conservative treatment for Femoroacetabular impingement syndrome: Systematic review and meta-analysis of randomized controlled trials

2020 ◽  
pp. 026921552096669 ◽  
Author(s):  
Robson Massi Bastos ◽  
Jorge Geraldo de Carvalho Júnior ◽  
Suellen Aline Martinez da Silva ◽  
Shirley Ferreira Campos ◽  
Matheus Vieira Rosa ◽  
...  
Keyword(s):  
Systematic Review ◽  
Surgical Treatment ◽  
Conservative Treatment ◽  
Femoroacetabular Impingement ◽  
Methodological Quality ◽  
Impingement Syndrome ◽  
Level Of Evidence ◽  
Femoroacetabular Impingement Syndrome ◽  
Quality Evidence

Objective: To summarize the effects of surgical treatment compared to conservative treatment in femoroacetabular impingement syndrome in the short, medium, and long term. Study Design: Systematic review Methods: The following databases were searched on 14/09/2020: MEDLINE, EMBASE, CENTRAL, Web of Science, and PEDro. There were no date or language limits. The methodological quality assessment was performed using the PEDro scale and the quality of the evidence followed the GRADE recommendation. The outcomes pain, disability, and adverse effects were extracted. Results: Of 6264 initial studies, three met the full-text inclusion criteria. All studies were of good methodological quality. Follow up ranged from six months to two years, with 650 participants in total. The meta-analyses found no difference in disability between surgical versus conservative treatment, with a mean difference (MD) between groups of 3.91 points (95% CI –2.19 to 10.01) at six months, MD of 5.53 points (95% CI –3.11 to 14.16) at 12 months and 3.8 points (95% CI –6.0 to 13.6) at 24 months. The quality of the evidence (GRADE) varied from moderate to low across all comparisons. Conclusion: There is moderate-quality evidence that surgical treatment is not superior to conservative treatment for femoroacetabular impingement syndrome in the short term, and there is low-quality evidence that it is not superior in the medium term. Level of evidence: Therapy, level 1a. Registration number: PROSPERO CRD42019134118

Femoroacetabular Impingement Syndrome: An Underrecognized Cause of Hip Pain and Premature Osteoarthritis?

2010 ◽  
Vol 37 (7) ◽  
pp. 1395-1404 ◽  
Author(s):  
GRAHAM D. REID ◽  
CALLUM G. REID ◽  
NADIA WIDMER ◽  
PETER L. MUNK
Keyword(s):  
Femoral Head ◽  
Femoroacetabular Impingement ◽  
Early Recognition ◽  
Hip Osteoarthritis ◽  
Hip Pain ◽  
Impingement Syndrome ◽  
Predisposing Factor ◽  
Radiographic Findings ◽  
Hip Arthritis ◽  
Femoroacetabular Impingement Syndrome

Acetabular dysplasia is well recognized as a potential predisposing factor to the development of hip osteoarthritis (OA). In the orthopedic literature, other dysmorphic and orientation abnormalities of the femoral head, femoral head-neck junction, and the acetabulum have been reported, with increasing frequency in recent years, under the term femoroacetabular impingement syndrome (FAI). The studies have shown a clear association of these structural anomalies with patients’ symptoms and signs, radiographic and pathologic abnormalities, and the development of degenerative hip arthritis. FAI is now believed to be a very important predisposing factor for the development of degenerative hip arthritis, particularly in younger adults. Although the results of longterm studies are awaited, the hope is that early surgical intervention in patients with FAI will change the course or prevent the development of hip OA. It is well documented that early recognition of potential FAI surgical candidates, before OA is advanced, determines the postsurgical outcome. FAI has not been reported in the rheumatology literature, but since patients with FAI likely often initially present to rheumatology clinics for assessment of hip pain, it is important for rheumatologists to be aware of this condition and refer to orthopedics when appropriate. The objective of this review is to provide an outline of the basic concepts of FAI, including clinical presentation and radiographic findings, so that rheumatologists become more familiar with this important emerging entity.

scholarly journals Evaluation of outcome reporting trends for femoroacetabular impingement syndrome- a systematic review

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Ida Lindman ◽  
Sarantos Nikou ◽  
Axel Öhlin ◽  
Eric Hamrin Senorski ◽  
Olufemi Ayeni ◽  
...  
Keyword(s):  
Systematic Review ◽  
Surgical Treatment ◽  
Femoroacetabular Impingement ◽  
Arthroscopic Surgery ◽  
Impingement Syndrome ◽  
Harris Hip Score ◽  
Level Of Evidence ◽  
Continuous Increase ◽  
Femoroacetabular Impingement Syndrome ◽  
Patient Reported

Abstract Purpose The aim of this systematic review was to evaluate the trends in the literature regarding surgical treatment for femoroacetabular impingement syndrome (FAIS) and to present which patient-reported outcome-measures (PROMs) and surgical approaches are included. Methods This systematic review was conducted with the PRISMA guidelines. The literature search was performed on PubMed and Embase, covering studies from 1999 to 2020. Inclusion criteria were clinical studies with surgical treatment for FAIS, the use of PROMs as evaluation tool and studies in English. Exclusion criteria were studies with patients < 18 years, cohorts with < 8 patients, studies with primarily purpose to evaluate other diagnoses than FAIS and studies with radiographs as only outcomes without using PROMs. Data extracted were author, year, surgical intervention, type of study, level of evidence, demographics of included patients, and PROMs. Results The initial search yielded 2,559 studies, of which 196 were included. There was an increase of 2,043% in the number of studies from the first to the last five years (2004–2008)—(2016–2020). There were 135 (69%) retrospective, 55 (28%) prospective and 6 (3%) Randomized Controlled Trials. Level of evidence ranged from I-IV where Level III was most common (44%). More than half of the studies (58%) originated from USA. Arthroscopic surgery was the most common surgical treatment (85%). Mean follow-up was 27.0 months (± 17 SD), (range 1.5–120 months). Between 1–10 PROMs were included, and the modified Harris Hip Score (mHHS) was most commonly used (61%). Conclusion There has been a continuous increase in the number of published studies regarding FAIS with the majority evaluating arthroscopic surgery. The mHHS remains being the most commonly used PROM.

Return to Sport and Performance After Hip Arthroscopy for Femoroacetabular Impingement in 18- to 30-Year-Old Athletes: A Cross-sectional Cohort Study of 189 Athletes

2018 ◽  
Vol 46 (11) ◽  
pp. 2578-2587 ◽  
Author(s):  
Lasse Ishøi ◽  
Kristian Thorborg ◽  
Otto Kraemer ◽  
Per Hölmich
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Arthroscopy ◽  
Return To Sport ◽  
Sports Participation ◽  
Impingement Syndrome ◽  
Sports Performance ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Femoroacetabular Impingement Syndrome

Background: A recent systematic review found that 87% of athletes return to sport after hip surgery for femoroacetabular impingement syndrome. However, the proportion of athletes returning to preinjury sport at their preinjury level of sport is less clear. Purpose: The main purpose of this study was to determine the rate of athletes returning to preinjury sport at preinjury level including their associated sports performance after hip arthroscopy for femoroacetabular impingement syndrome. Furthermore, self-reported hip and groin function was investigated. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Eligible subjects were identified in the Danish Hip Arthroscopy Registry. A self-reported return to sport questionnaire was used to collect data after hip arthroscopy. If athletes reported they were engaged in preinjury sport at their preinjury level, the associated sports performance and participation were assessed as either (1) optimal sports performance including full sports participation; (2) impaired sports performance, but full sports participation; or (3) impaired sports performance including restricted sports participation. Self-reported hip and groin function was assessed for all athletes by use of the Copenhagen Hip and Groin Outcome Score. Results: The study included 189 athletes (mean ± SD age at follow-up, 26.9 ± 3.4 years) at a mean ± SD follow-up of 33.1 ± 16.3 months after surgery. At follow-up, 108 athletes (57.1%) were playing preinjury sport at preinjury level, whereas the remaining 81 athletes (42.9%) failed to return to preinjury sport at preinjury level. Of the 108 athletes engaged in their preinjury sport at preinjury level at follow-up, 32 athletes (29.6%) reported optimal sports performance including full sports participation, corresponding to 16.9% of the study sample. Better self-reported hip and groin function was observed in athletes who were engaged in preinjury sport at preinjury level compared with athletes who were not. Conclusion: Fifty-seven percent of athletes returned to preinjury sport at their preinjury level. This is considerably lower than a previously reported return to sport rate of 87% and may reflect that the present study used a clear and strict definition of return to sport. Of note, only one-third of athletes who returned to preinjury sport at preinjury level reported their sports performance to be optimal, corresponding to 16.9% of the study sample. Better self-reported hip and groin function was observed in athletes who were playing preinjury sport at preinjury level compared with athletes who were not.

scholarly journals Preoperative Hip Extension Strength Is an Independent Predictor of Achieving Clinically Significant Outcomes After Hip Arthroscopy for Femoroacetabular Impingement Syndrome

2020 ◽  
Vol 12 (4) ◽  
pp. 361-372 ◽  
Author(s):  
Edward C. Beck ◽  
Benedict U. Nwachukwu ◽  
Laura M. Krivicich ◽  
Philip Malloy ◽  
Sunikom Suppauksorn ◽  
...  
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Arthroscopy ◽  
Case Series ◽  
Impingement Syndrome ◽  
Level Of Evidence ◽  
Hip Strength ◽  
Femoroacetabular Impingement Syndrome ◽  
Patient Reported ◽  
Hip Extension ◽  
Abduction Strength

Background: The effect of preoperative hip strength on outcomes after hip arthroscopy for femoroacetabular impingement syndrome (FAIS) is unclear. The purpose of this study was to determine whether preoperative isometric hip strength is associated with outcome scores at 6 months as well as achieving the minimal clinically important difference (MCID) and patient acceptable symptomatic state (PASS) in patients undergoing hip arthroscopy for FAIS. Hypothesis: Increased preoperative isometric strength will be correlated with short-term postoperative outcomes and will be predictive of achieving higher functional status. Study Design: Case series. Level of Evidence: Level 4. Methods: Data from 92 consecutive patients undergoing primary hip arthroscopy for treatment of FAIS from March through August 2018 were analyzed. All patients included in the analysis had preoperative measures of isometric hip strength on both affected and unaffected limbs, as well as preoperative and 6-month patient-reported outcome (PRO) scores. Analysis was performed to determine correlations between normalized isometric hip strength measurements and PROs and whether strength measurements were predictive of achieving MCID or PASS. Results: A total of 74 (80.4%) patients had 6-month PROs and were included in the final analysis. Hip extension strength on both sides was correlated with all postoperative PROs (all P > 0.05). Abduction strength on both sides was correlated with postoperative Hip Outcome Score–Activities of Daily Living subscale score, achieving MCID on at least 1 score threshold, and reaching the international Hip Outcome Tool-12 threshold score for achieving PASS (all P < 0.05). Regression analysis showed that extension strength on the affected side was the only strength measurement predictor of achieving PASS (1.043; P = 0.049). Conclusion: Preoperative isometric hip extension and abduction strength are correlated with 6-month postoperative PRO scores. Furthermore, hip extension strength is a predictor of achieving clinically meaningful outcomes. Clinical Relevance: This study highlights the possible importance of preoperative optimization of hip function to maximize outcomes in patients undergoing hip arthroscopy for FAIS.

scholarly journals High Rate of Return to Cycling After Hip Arthroscopy for Femoroacetabular Impingement Syndrome

2017 ◽  
Vol 10 (3) ◽  
pp. 259-265 ◽  
Author(s):  
Rachel M. Frank ◽  
Gift Ukwuani ◽  
Ian Clapp ◽  
Jorge Chahla ◽  
Shane J. Nho
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Arthroscopy ◽  
Impingement Syndrome ◽  
High Rate ◽  
Rate Of Return ◽  
Harris Hip Score ◽  
Level Of Evidence ◽  
Femoroacetabular Impingement Syndrome ◽  
Patient Reported ◽  
Competitive Cyclists

Background: Femoroacetabular impingement syndrome (FAIS) is most commonly diagnosed in athletes who sustain repetitive flexion and rotational loading to their hip. The purpose of this study was to evaluate a patient’s ability to return to cycling after hip arthroscopy for FAIS. Hypothesis: There is a high rate of return to cycling after hip arthroscopy. Study Design: Retrospective analysis. Level of Evidence: Level 4. Methods: Consecutive patients who had identified themselves as cyclists and had undergone hip arthroscopy for the treatment of FAIS were reviewed. Pre- and postoperative physical examinations, imaging, and patient-reported outcomes (PROs) scores, including the modified Harris Hip Score (mHHS), Hip Outcome Score Activities of Daily Living (HOS-ADL) and Sports-Specific (HOS-SS) subscales, and visual analog scale for pain, as well as a cycling-specific questionnaire, were assessed for all patients. Results: A total of 58 patients (62% female; mean age, 30.0 ± 7.1 years; mean body mass index, 23.2 ± 2.7 kg/m2) were included. Prior to surgery, patients averaged 30 ± 42 miles per week (range, 2-300 miles). Fifty-five patients (95%) were forced to discontinue cycling at an average of 7.5 ± 6.2 months prior to surgery due to hip pain. Fifty-six patients (97%) returned to cycling at an average of 4.5 ± 2.5 months after surgery, with 33 (59%) returning to a better level of cycling and 23 (41%) to the same cycling level. Postoperatively, there was no difference in the average number of miles patients completed per week compared with preoperative values ( P = 0.08). At a mean follow-up of 31.14 ± 0.71 months (range, 24-48 months), all patients experienced significant improvements in mHHS, HOS-ADL, and HOS-SS PROs (all P < 0.0001), with an overall satisfaction rate of 91% ± 13%. Conclusion: Recreational and competitive cyclists return to cycling 97% of the time after hip arthroscopy for FAIS, with most of these patients returning at an average of 4.5 months after surgery. This information is helpful in counseling patients on their expectations with regard to returning to cycling after hip arthroscopy for FAIS. Clinical Relevance: Cyclists return to sport 97% of the time at an average of 4.5 months after hip arthroscopy for FAIS.

Association Between Orientation and Magnitude of Femoral Torsion and Propensity for Clinically Meaningful Improvement After Hip Arthroscopy for Femoroacetabular Impingement Syndrome: A Computed Tomography Analysis

2021 ◽  
pp. 036354652110216
Author(s):  
Kyle N. Kunze ◽  
Thomas D. Alter ◽  
Alexander C. Newhouse ◽  
Felipe S. Bessa ◽  
Joel C. Williams ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Body Mass Index ◽  
Body Mass ◽  
Femoroacetabular Impingement ◽  
Hip Arthroscopy ◽  
Impingement Syndrome ◽  
Femoral Torsion ◽  
Femoroacetabular Impingement Syndrome ◽  
Outcome Improvement ◽  
The Mean

Background: Femoral torsion imaging measurements and classifications are heterogeneous throughout the literature, and the influence of femoral torsion on clinically meaningful outcome improvement after hip arthroscopy for femoroacetabular impingement syndrome (FAIS) has not been well studied. Purpose: To (1) perform a computed tomography (CT)–based analysis to quantify femoral torsion in patients with FAIS and (2) explore the relationship between the orientation and magnitude of femoral torsion and the propensity for clinically meaningful outcome improvement after hip arthroscopy. Study Design: Cohort study; Level of evidence, 3. Methods: Consecutive patients who underwent hip arthroscopy for FAIS between January 2012 and April 2018 were identified. Inclusion criteria were the presence of preoperative CT imaging with transcondylar slices of the knee and minimum 2-year outcome measures. Exclusion criteria were revision hip arthroscopy, Tönnis grade >1, congenital hip condition, hip dysplasia (lateral center-edge angle <20°), and concomitant gluteus medius or minimus repair. Torsion groups were defined as severe retrotorsion (SR; <0°), moderate retrotorsion (MR; 0°-5°), normal torsion (N; 5°-20°), moderate antetorsion (MA; 20°-25°), and severe antetorsion of antetorsion (SA; >25°). Treatment did not differ based on femoral torsion. Patient characteristics and clinical outcomes were analyzed, including the Hip Outcome Score–Activities of Daily Living (HOS-ADL), Hip Outcome Score–Sports Subscale (HOS-SS), modified Harris Hip Score (mHHS), international Hip Outcome Tool (iHOT-12), visual analog scale (VAS) for pain, and VAS for satisfaction. Achievement of the minimal clinically important difference (MCID) and patient acceptable symptom state (PASS) by torsion stratification was analyzed using the chi-square test. Inter- and intrarater reliabilities for CT measurements were 0.980 ( P < .001) and 0.974 ( P < .001), respectively. Results: The study included 573 patients with a mean ± SD age and body mass index of 32.6 ± 11.8 years and 25.6 ± 10.6, respectively. The mean ± SD femoral torsion for the study population was 12.3°± 9.3°. After stratification, the number of patients within each group and the mean ± SD torsion for each group were as follows: SR (n = 36; –6.5°± 7.1°), MR (n = 80; 2.8°± 1.4°), N (n = 346; 12.3°± 4.1°), MA (n = 64; 22.2°± 1.4°), and SA (n = 47; 30.3°± 3.7°). No significant differences in age, body mass index, sex, tobacco use, workers’ compensation status, or participation in physical activity were observed at baseline. No significant differences were seen in pre- and postoperative VAS pain, mHHS, HOS-ADL, HOS-SS, iHOT-12, or postoperative VAS satisfaction among the cohorts. Furthermore, no statistically significant differences were found in the proportion of patients who achieved the MCID or the PASS for any outcome among the groups. Conclusion: The orientation and severity of femoral torsion at the time of hip arthroscopy for FAIS did not influence the propensity for clinically significant outcome improvement.

scholarly journals The Risk of Impingement With Sexual Activity in Femoroacetabular Impingement Syndrome Due to Cam Morphology: Shape Matters

2018 ◽  
Vol 6 (8) ◽  
pp. 232596711879179 ◽  
Author(s):  
Kyle R. Sochacki ◽  
Thomas R. Yetter ◽  
Hannah Morehouse ◽  
Domenica Delgado ◽  
Shane J. Nho ◽  
...  
Keyword(s):  
Sexual Activity ◽  
Femoroacetabular Impingement ◽  
Three Dimensional ◽  
Symptomatic Improvement ◽  
Impingement Syndrome ◽  
3 Dimensional ◽  
Sexual Position ◽  
Femoroacetabular Impingement Syndrome ◽  
Before And After ◽  
Cam Morphology

Background: Sexual difficulties and dysfunction are common in patients with femoroacetabular impingement syndrome (FAIS) secondary to hip pain and stiffness. Purpose: To determine the risk of impingement in patients with FAIS during common sexual positions using 3-dimensional computer-simulated collision detection before and after cam correction. Study Design: Descriptive laboratory study. Methods: Ten computed tomography scans of the pelvis and femur from patients with FAIS due to isolated cam morphology were retrospectively reviewed. Three-dimensional osseous models were developed using Mimics software. The cam deformity was then completely corrected. Simulations of hip range of motion for the most common sexual positions for men (n = 15) and women (n = 14) were conducted before and after cam resection. Impingement was determined for each sexual position. Position safety was defined as ≤20% of models demonstrating impingement in a position. Descriptive and simple comparative statistics were calculated. Results: There was no sexual position that was impingement free in all models before cam correction. After cam correction, 11 (37.9%) of 29 total positions were impingement free. There was a significant decrease in impingement from before to after cam correction (40.7% vs 11.4%, respectively, of all female positions [ P < .0001]; 26.0% vs 6.7%, respectively, of all male positions [ P < .0001]). There was a significant increase in the number of “safe” positions from before to after cam correction (4 vs 11, respectively, of all female positions [ P = .008]; 7 vs 15, respectively, of all male positions [ P = .001]). Conclusion: After cam correction, there was a significant reduction in the impingement rate and a significant increase in the number of “safe” sexual positions. Clinical Relevance: Impingement in patients with cam morphology is common during sexual activity. Surgical correction of cam morphology significantly reduces the rate of impingement. Although this laboratory imaging-only study did not account for patient symptoms, this likely translates to significant symptomatic improvement during sexual activity after surgical cam correction.

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