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Wagner M, Schaller L, Endstrasser F, Vavron P, Braito M, Schmaranzer E, Schmaranzer F, Brunner A. Radiological predictors of outcomes in hip arthroscopy for femoroacetabular impingement. Bone Joint J 2024; 106-B:775-782. [PMID: 39084659 DOI: 10.1302/0301-620x.106b8.bjj-2023-1478.r2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Aims Hip arthroscopy has gained prominence as a primary surgical intervention for symptomatic femoroacetabular impingement (FAI). This study aimed to identify radiological features, and their combinations, that predict the outcome of hip arthroscopy for FAI. Methods A prognostic cross-sectional cohort study was conducted involving patients from a single centre who underwent hip arthroscopy between January 2013 and April 2021. Radiological metrics measured on conventional radiographs and magnetic resonance arthrography were systematically assessed. The study analyzed the relationship between these metrics and complication rates, revision rates, and patient-reported outcomes. Results Out of 810 identified hip arthroscopies, 359 hips were included in the study. Radiological risk factors associated with unsatisfactory outcomes after cam resection included a dysplastic posterior wall, Tönnis grade 2 or higher, and over-correction of the α angle. The presence of acetabular retroversion and dysplasia were also significant predictors for worse surgical outcomes. Notably, over-correction of both cam and pincer deformities resulted in poorer outcomes than under-correction. Conclusion We recommend caution in performing hip arthroscopy in patients who have three positive acetabular retroversion signs. Acetabular dysplasia with a lateral centre-edge angle of less than 20° should not be treated with isolated hip arthroscopy. Acetabular rim-trimming should be avoided in patients with borderline dysplasia, and care should be taken to avoid over-correction of a cam deformity and/or pincer deformity.
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Affiliation(s)
- Moritz Wagner
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
- Department of Orthopaedics and Traumatology, Paracelsus Medical University, Tyrol, Austria
| | | | - Franz Endstrasser
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
| | - Petr Vavron
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
| | - Matthias Braito
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
| | - Ehrenfried Schmaranzer
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
| | - Florian Schmaranzer
- Department of Diagnostic, Interventional, and Paediatric Radiology, Inselspital University Hospital, University of Bern, Bern, Switzerland
| | - Alexander Brunner
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus St. Johann i.T., Tyrol, Austria
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Fortier LM, Popovsky D, Durci MM, Norwood H, Sherman WF, Kaye AD. An Updated Review of Femoroacetabular Impingement Syndrome. Orthop Rev (Pavia) 2022; 14:37513. [PMID: 36034731 PMCID: PMC9404268 DOI: 10.52965/001c.37513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2023] Open
Abstract
Femoroacetabular impingement (FAI) is a chronic hip condition caused by femoral head and acetabular malformations resulting in abnormal contact across the joint. FAI often leads to labral, cartilaginous, and tissue damage that predispose this patient population to early osteoarthritis (OA). There are a variety of factors that increase the risk for FAI including younger age, Caucasian background, familial FAIS morphology, and competing in high-intensity sports during adolescence. Slow-onset, persistent groin pain is the most frequent initial presenting symptom. On physical examination, patients will typically have a positive FADIR test (flexion, adduction, internal rotation), also known as a positive impingement sign. FAI syndrome can be organized into three classifications; cam, pincer, or mixed. This classification refers to the characteristic morphological changes of the bony structures. The primary imaging modality for diagnosing FAI is a plain radiograph of the pelvis, which can be used to measure the alpha angle and the lateral center edge angle used to quantify severity. Conservative treatment is typically considered first-line treatment for mild to moderate FAI syndrome; however, the outcomes following postoperative surgical intervention have demonstrated excellent results. The most common surgical treatment option for FAI is done arthroscopically.
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Affiliation(s)
| | | | - Maggie M Durci
- Louisiana State University Shreveport School of Medicine
| | - Haley Norwood
- Louisiana State University Shreveport School of Medicine
| | | | - Alan D Kaye
- Department of Anesthesiology, Louisiana State University Health Shreveport
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Foissey C, Abid H, Martinot P, Cazor A, Thaunat M. Predictive radiological parameters of failure following surgical management of femoroacetabular impingement associated with borderline acetabular dysplasia. Orthop Traumatol Surg Res 2022; 109:103349. [PMID: 35688380 DOI: 10.1016/j.otsr.2022.103349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 03/23/2022] [Accepted: 03/29/2022] [Indexed: 02/03/2023]
Abstract
INTRODUCTION The role of arthroscopic treatment of femoroacetabular impingement (FAI) in mild or borderline hip dysplasia (lateral center edge angle=18-25) is controversial. It is recommended to combine capsular plication with femoral neck osteoplasty and suture repair of the labrum. Few studies have investigated which radiological parameters are associated with failure of this procedure. HYPOTHESIS A larger number of radiological signs of mild or borderline hip dysplasia than radiological signs of FAI negatively influence the outcomes of arthroscopic treatment. METHODS This was a retrospective study done with data collected prospectively after a minimum of 2 years' follow-up in patients who underwent arthroscopic treatment of FAI due to cam impingement combined with mild to moderate hip dysplasia. Patients with hip osteoarthritis graded as ≥ Tönnis 2 were excluded. Functional outcome scores (mHHS and NAHS) were determined along with the need for reoperation. Three groups were defined based on the outcomes: success (mHHS ≥ Patient Acceptable Symptomatic State [PASS]); moderate improvement (improvement in mHHS + mHHS<PASS) and failure (worsening of the mHHS). Demographic data, radiographic parameters (LCEA, Tönnis angle, alpha angle, offset, FEAR index, Shenton's line, Cliff sign, anterior wall index [AWI], posterior wall index [PWI]) and intraoperative findings were compared between these three groups. The area under the curve (AUC) for the most relevant data identified during the univariate analysis were then modeled to define which factors were the best at predicting failed arthroscopic treatment a posteriori. RESULTS The study analyzed 39 patients. The mean mHHS was 76±15 [40-92]. The "success" group consisted of 21 patients (56%, 21/39), the "moderate improvement" group of 12 patients (31%, 12/39) and the failure group of 6 patients (13%, 6/39) (2 subsequently underwent total hip replacement, 4 underwent shelf acetabuloplasty). The FEAR index was significantly higher and the AWI and VCE were significantly lower in the "failure" group. The FEAR index was the best predictive factor; an index ≥ 4° detected 100% of failures with 96% specificity. The patients in the "moderate improvement" group were significantly older (37 years±8 [18-45]<p= 0.04) with a significantly higher offset (2mm±3 [-5-5]<p=0.004); an offset ≥ 2mm could detect 73% of them with a specificity of 72%. CONCLUSION A FEAR index ≥ 4° and offset ≥ 2mm is best able to detect patients at risk of failure and unsatisfactory results, respectively, in the mild clinical cam-type impingement in a population of FAI patients. LEVEL OF EVIDENCE IV, retrospective series.
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Affiliation(s)
- Constant Foissey
- Centre Orthopédique Santy, Lyon, France-Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France; Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France.
| | - Hichem Abid
- Centre Orthopédique Santy, Lyon, France-Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France; Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France
| | - Pierre Martinot
- Service d'orthopédie, Hôpital Salengro, CHU de Lille, place de Verdun, 59000 Lille, France
| | - Antoine Cazor
- Centre Orthopédique Santy, Lyon, France-Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France; Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France
| | - Mathieu Thaunat
- Centre Orthopédique Santy, Lyon, France-Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France; Hôpital Privé Jean Mermoz, Ramsay-Générale de Santé, Lyon, France
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Berlinberg EJ, Forlenza EM, Patel HH, Ross R, Mascarenhas R, Chahla J, Nho SJ, Forsythe B. Increased Readmission Rates but No Difference in Complication Rates in Patients Undergoing Inpatient Versus Outpatient Hip Arthroscopy: A Large Matched-Cohort Insurance Database Analysis. Arthrosc Sports Med Rehabil 2022; 4:e975-e988. [PMID: 35747635 PMCID: PMC9210381 DOI: 10.1016/j.asmr.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 02/08/2022] [Indexed: 11/29/2022] Open
Abstract
Purpose Methods Results Conclusions Level of Evidence
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Affiliation(s)
- Elyse J. Berlinberg
- Midwest Orthopedics at Rush, Chicago, Illinois, U.S.A
- NYU Grossman School of Medicine, New York, New York, U.S.A
| | | | | | - Ruby Ross
- NYU Grossman School of Medicine, New York, New York, U.S.A
| | | | - Jorge Chahla
- Midwest Orthopedics at Rush, Chicago, Illinois, U.S.A
| | - Shane J. Nho
- Midwest Orthopedics at Rush, Chicago, Illinois, U.S.A
| | - Brian Forsythe
- Midwest Orthopedics at Rush, Chicago, Illinois, U.S.A
- Address correspondence to Brian Forsythe, M.D., Midwest Orthopedics at Rush, 1611 W Harrison St, Ste 360, Chicago, IL 60621, U.S.A.
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Vahedi H, Yacovelli S, Diaz C, Parvizi J. Surgical Treatment of Femoroacetabular Impingement: Minimum 10-Year Outcome and Risk Factors for Failure. JB JS Open Access 2021; 6:JBJSOA-D-20-00176. [PMID: 34841187 PMCID: PMC8613364 DOI: 10.2106/jbjs.oa.20.00176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Femoroacetabular impingement (FAI) is a well-known cause of hip pain and dysfunction in young adults. Surgical treatment has been widely popularized during the past decade. However, most reported results have been limited to short-term and intermediate-term follow-up. The long-term success rate and risk factors for failure are largely unknown. This study aimed to report the long-term (minimum, 10 years) clinical outcomes of surgical treatment of FAI and to describe the clinical and radiographic parameters associated with the failure of treatment involving femoroacetabular osteoplasty (FAO) and labral repair.
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Affiliation(s)
- Hamed Vahedi
- West Virginia University Medicine, Morgantown, West Virginia
| | - Steven Yacovelli
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Claudio Diaz
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Javad Parvizi
- Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
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Yacovelli S, Sutton R, Vahedi H, Sherman M, Parvizi J. High Risk of Conversion to THA After Femoroacetabular Osteoplasty for Femoroacetabular Impingement in Patients Older than 40 Years. Clin Orthop Relat Res 2021; 479:1112-1118. [PMID: 33236866 PMCID: PMC8052066 DOI: 10.1097/corr.0000000000001554] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 10/09/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND Femoroacetabular impingement (FAI) is a recognized cause of hip pain and decreased quality of life and has been linked to primary idiopathic hip osteoarthritis (OA). Although the operative indications for FAI have expanded to include older patients, we do not know whether there is an increased risk of conversion to THA after femoroacetabular osteoplasty (FAO) via the mini-open approach for FAI in patients older than 40 years compared with younger patients, after controlling for other confounding variables. QUESTIONS/PURPOSES (1) After matching for gender, BMI, preoperative symptomatic period, surgeon experience, Tönnis grade, and degree of chondral lesion, are patients older than 40 years who undergo FAO for FAI more likely to be revised to THA at a minimum of 2 years' follow-up than are patients younger than 40? (2) Is there a difference in delta (postoperative minus preoperative) improvement in functional outcome scores in those patients who did not go on to THA between patients older than and younger than 40 years? METHODS Between 2003 and 2017, one surgeon performed 281 FAOs via the mini-open approach in patients older than 40 years and 544 of the same procedure in patients younger than 40 years. During that period, the general indications for FAO were the same in both age groups: (1) history and physical exam consistent with FAI, (2) radiographic evidence of focal impingement (cam, pincer, or both), (3) evidence of labral or chondrolabral tears, and (4) minimal to no arthritic changes (all four criteria required). In general, age was not used as a contraindication for surgery. A total of 86% (241 of 281) of patients older than 40 and 91% (494 of 544) of those younger than 40 were available for minimum of 2 years' follow-up, had complete datasets (radiographs as well as preoperative and most recent patient-reported outcomes scores) at a minimum of 2 years after surgery, and were considered eligible for the match. Propensity score matching was used to match for BMI, gender, preoperative symptomatic period, surgeon experience, Tönnis grade, and degree of intraoperative chondral lesion. We matched at a 1:2 ratio 130 patients older than age 40 with 260 patients younger than age 40. The mean ± SD follow-up duration for both groups was 5 ± 2 years. The mean age of the cohort of interest was 47 ± 5 years compared with 28 ± 7 years in the control. Fifty-four percent (70 of 130) of patients older than 40 years were women and 46% (60 of 130) were men; for those younger than 40, 51% (133 of 260) of participants were women and 49% (127 of 260) were men. Tönnis grade distribution for patients older than 40 was as follows: 46% (60 of 130) had Grade 0, 42% (55 of 130) had Grade 1, and 12% (15 of 130) had Grade 2. In comparison, Tönnis grade for patients younger than 40 was as follows: 52% (136 of 260) had Grade 0, 38% (100 of 260) had Grade 1, and 9% (24 of 260) had Grade 2 (p = 0.49). Chondral lesion degree was determined intraoperatively as none, a partial-thickness tear, or a full-thickness tear. Tönnis grade was determined based on preoperative plain AP hip radiographs. We then compared the percentage of patients who converted to THA during the surveillance period (our primary study outcome). We also compared the difference in delta (preoperative minus postoperative) improvement in functional outcome scores using the modified Harris Hip Score (mHHS) between the groups, excluding those who had already been converted to THA. RESULTS In patients older than 40 years, 16% (21 of 130) converted to THA at a mean time to conversion of 2 ± 1 years compared with 7% (17 of 260) at a mean time of 2 ± 2 years in patients younger than 40 years (p = 0.01). At a mean of 5 ± 2 years after FAO, among those patients who had not undergone conversion to THA, the mean delta mHHS score for patients older than 40 was 11 ± 17, compared with 20 ± 26 for patients younger than 40 (p = 0.04). CONCLUSION Since approximately 1 in 6 patients older than 40 years in this series who underwent FAO for FAI opted for early conversion to THA at a mean time of 2 years after the osteoplasty procedure, and the remaining patients who did not undergo THA reported lower improvement in functional outcomes, we recommend surgeons avoid this procedure in patients in this age group until or unless we can better refine our indications. This is especially true because loss to follow-up causes us to believe that, if anything, our estimates of the risk of conversion to THA are conservative. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Steven Yacovelli
- S. Yacovelli, R. Sutton, H. Vahedi, M. Sherman, J. Parvizi, Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA, USA
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Giordano BD, Kuhns BD, Perets I, Yuen L, Domb BG. Acetabular Morphologic Characteristics Predict Early Conversion to Arthroplasty After Isolated Hip Arthroscopy for Femoroacetabular Impingement. Am J Sports Med 2020; 48:188-196. [PMID: 31765238 DOI: 10.1177/0363546519888894] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Hip arthroscopy in the setting of dysplasia and borderline dysplasia is controversial. Dysplasia severity is most often defined by the lateral center edge angle (LCEA) but can also be evaluated radiographically by the acetabular inclination (AI). PURPOSE/HYPOTHESIS The purpose was to determine the effect of AI on outcomes after isolated hip arthroscopy for femoroacetabular impingement (FAI). We hypothesized that patients with dysplasia would have higher rates of arthroplasty as well as inferior clinical and functional outcomes compared with patients who did not have dysplasia. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS A hip arthroscopy registry was reviewed for participants undergoing arthroscopic correction of FAI from February 28, 2008, to June 10, 2013. Participants required a clinical diagnosis and isolated arthroscopic correction of FAI with preoperative imaging and intraoperative cartilage status recorded. AI dysplasia was defined as an AI greater than 10°, LCEA dysplasia as LCEA less than 18°, and borderline LCEA dysplasia as LCEA 18° to 25°. Patients without an acetabular deformity (LCEA 25°-40°; AI <10°) served as a control population. Postoperative variables included patient-reported outcome surveys with conversion to arthroplasty as the primary endpoint. Minimum 5-year outcome scores were obtained for 337 of 419 patients (80.4%) with an average follow-up of 75.2 ± 12.7 months. RESULTS This study included 419 patients: 9 (2%) with LCEA dysplasia, 42 (10%) with AI dysplasia, and 51 (12%) with borderline dysplasia. The AI but not LCEA was significantly correlated with lower outcome scores on the modified Harris Hip Score (r = 0.13; P = .01), Non-Arthritic Hip Score (r = 0.10; P = .04), and Hip Outcome Score-Sports Subscale (r = 0.11; P = .04). A total of 58 patients (14%) underwent arthroplasty at 31 ± 20 months postoperatively. Patients with LCEA dysplasia had an arthroplasty rate of 56% (odds ratio, 8.4), whereas patients with AI dysplasia had an arthroplasty rate of 31% (odds ratio, 3.3), which was significantly greater than the rate for the nondysplastic cohort (13.5%; P < .0001). Patients with borderline LCEA dysplasia did not have increased rates of arthroplasty. A multivariate analysis found increasing age, increasing AI, Tönnis grade higher than 1, and femoral Outerbridge grade higher than 2 to be most predictive of conversion to arthroplasty. CONCLUSION We found that an elevated AI, along with increasing age, Tönnis grade, and femoral Outerbridge grade significantly predict early conversion to arthroplasty after isolated hip arthroscopy. We recommend using the AI, in addition to the LCEA, in evaluating hip dysplasia before hip arthroscopy.
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Affiliation(s)
- Brian D Giordano
- Department of Orthopedics & Rehabilitation, University of Rochester Medical Center, Rochester, New York, USA
| | - Benjamin D Kuhns
- Department of Orthopedics & Rehabilitation, University of Rochester Medical Center, Rochester, New York, USA
| | - Itay Perets
- American Hip Institute, USA Hinsdale Orthopedics, Westmont, Illinois, USA
| | - Leslie Yuen
- American Hip Institute, USA Hinsdale Orthopedics, Westmont, Illinois, USA
| | - Benjamin G Domb
- American Hip Institute, USA Hinsdale Orthopedics, Westmont, Illinois, USA
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Letter to the Editor: Bilateral Femoroacetabular Impingement: What is the Fate of the Asymptomatic Hip? Clin Orthop Relat Res 2019; 477:2607-2608. [PMID: 31592969 PMCID: PMC6903854 DOI: 10.1097/corr.0000000000000974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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