scholarly journals BORDERLINE ACETABULAR DYSPLASIA: INDEPENDENT PREDICTORS OF HIP INSTABILITY VERSUS IMPINGEMENT

2019 ◽  
Vol 7 (3_suppl) ◽  
pp. 2325967119S0001
Author(s):  
Jeffrey J. Nepple ◽  
Elizabeth A. Graesser ◽  
Joel Wells ◽  
John Clohisy
Keyword(s):  
Range Of Motion ◽  
Clinical Characteristics ◽  
Acetabular Dysplasia ◽  
Alpha Angle ◽  
Hip Pain ◽  
Harris Hip Score ◽  
Hip Instability ◽  
Patient Reported ◽  
Symptomatic Acetabular Dysplasia ◽  
Lateral Hip Pain

Background: Hips with borderline acetabular dysplasia (lateral center-edge angle, LCEA, between 20° and 25°) are challenging in terms of diagnostic and treatment decision-making. It is accepted that a portion of this population has primarily hip instability-based symptoms consistent with symptomatic acetabular dysplasia, while others have primarily hip impingement-based symptoms consistent with femoroacetabular impingement (FAI). Nevertheless, the diagnostic characteristics that differentiate hip instability and FAI have not been identified. The purpose of this study was to examine a cohort of patients with minor acetabular dysplasia features in order to identify the preoperative clinical characteristics and imaging findings that differentiate patients with hip instability from patients with FAI. Methods: A retrospective cohort study of patients with borderline acetabular dysplasia was performed. Utilizing our institution’s hip preservation database, we identified 143 consecutive hips in 134 patients undergoing hip preservation surgery in the setting of borderline acetabular dysplasia. All patients were identified by prospective radiographic evaluation with an LCEA between 20° and 25°. Inclusion criteria included age 14-40 years and primary surgical treatment. Medical records were reviewed to determine patient demographics, details of clinical presentation, baseline patient-reported outcome scores, physical exam findings, plain radiographic findings, and the operative procedures performed. Statistical analyses were used to compare the clinical features and imaging parameters of the symptomatic acetabular dysplasia and FAI subgroups. Results: Of the 143 hips in the cohort, 39.2% (n = 56) had the diagnosis of symptomatic instability, while 60.8% (n = 87) had the diagnosis of FAI. The cohort included 109 females (76.2%) and 34 males (23.8%). Hips with instability (compared to FAI) had a significantly lower LCEA (21.8° vs. 22.8°; p < 0.001), lower ACEA (23.3° vs. 26.6°; p = 0.002), a higher AI (11.8° vs. 8.5°; p < 0.001), and a lower maximum alpha angle (54.4° vs. 61.1°; p = 0.001). The odds of instability increased 1.7 times for each one-degree decrease in LCEA, 1.4 times for each one-degree decrease in ACEA, and 1.1 times for each one-degree increase in acetabular inclination (all p < 0.003). Sex was strongly associated with the clinical diagnosis, with instability present in 48.6% of females compared to only 8.8% of males (p < 0.001). Patients with instability presented with significantly greater disability, as indicated by the modified Harris hip score, UCLA activity, SF-12 physical function, and HOOS (pain, activities of daily living, sports and recreation, and quality of life) scores (all p = 0.05). The symptomatic acetabular dysplasia subgroup had significantly greater range of motion in terms of internal rotation in flexion (IRF, 22.7° vs. 12.4°, p < 0.001) and total arc of rotational motion (IRF+ERF, 61.2° vs. 47.4°, p < 0.001). Lateral hip pain was present in 42.9% (24/56) of hips in the instability group compared to 25.3% (22/87) of hips in the impingement group (p = 0.03). Conclusions: We found significant differences in the clinical characteristics and radiographic features of the symptomatic acetabular dysplasia and FAI subgroups within the borderline dysplasia cohort. Patients with symptomatic instability tend to have lateral hip pain, greater functional limitations, higher range of motion, and a greater AI, while patients with impingement symptoms tend to have more limited range of motion (especially IRF), a greater ACEA, and a greater alpha angle.

Clinical and Radiographic Presentation of Capsular Iatrogenic Hip Instability After Previous Hip Arthroscopy

2020 ◽  
Vol 48 (12) ◽  
pp. 2927-2932
Author(s):  
Dillon C. O’Neill ◽  
Alexander J. Mortensen ◽  
Peter C. Cannamela ◽  
Stephen K. Aoki
Keyword(s):  
Hip Arthroscopy ◽  
Daily Living ◽  
Patient Reported Outcomes ◽  
Harris Hip Score ◽  
Hip Instability ◽  
Computer Adaptive Test ◽  
Adaptive Test ◽  
Patient Reported ◽  
Modified Harris Hip Score

Background: The clinical and radiographic features of iatrogenic hip instability following hip arthroscopy have been described. However, the prevalence of presenting symptoms and associated imaging findings in patients with hip instability has not been reported. Purpose: To detail the prevalence of clinical and magnetic resonance arthrogram (MRA) findings in a cohort of patients with isolated hip instability and to determine midterm patient-reported outcomes in this patient population. Study Design: Case series; Level of evidence, 4. Methods: We retrospectively reviewed patients from 2014 to 2016 who underwent an isolated capsular repair in the revision hip arthroscopy setting. Patients were excluded if they underwent any concomitant procedures, such as labral repair, reconstruction, femoral osteoplasty, or any other related procedure. Several clinical data points were reviewed, including painful activities, mechanical symptoms, subjective instability, Beighton scores, axial distraction testing (pain, toggle, and apprehension), and distractibility under anesthesia. Patient-reported outcomes—including modified Harris Hip Score, Hip Outcome Score–Sports Subscale, Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function Computer Adaptive Test, and a return patient hip questionnaire—were collected pre- and postoperatively. Pre-revision radiographs were obtained, and lateral center-edge angle and alpha angle were measured on anteroposterior and frog-leg lateral views, respectively. Pre-revision MRAs were reviewed and evaluated for capsular changes. Capsular changes were defined as follows: 0, normal; 1, capsular redundancy; 2, focal capsular rent; and 3, gross extravasation of fluid from the capsule. Results: A total of 31 patients met inclusion criteria (5 male, 26 female; 14 right and 17 left hips). The mean age of patients was 36 years (range, 20-58 years). Overall, 27 (87%) reported hip pain with activities of daily living, and 31 (100%) experienced pain with sports or exercise. In addition, 24 (77%) had at least 1 positive finding on axial distraction testing. All patients had evidence of capsular changes on review of pre-revision MRAs. Out of 31 patients, 23 (74%) were available for follow-up at a minimum of 3.3 years and a mean ± SD of 4.6 ± 0.8 years. On average, modified Harris Hip Score improved by 20.3, Hip Outcome Score–Sports Subscale by 25.1, and PROMIS Physical Function Computer Adaptive Test by 6.4. Additionally, 20 (87%) patients reported improved or much improved physical ability, and 18 (78%) reported improved or much improved pain. Conclusion: The current study suggests that patients with hip instability demonstrate high rates of pain with activities of daily living and exercise, positive findings on axial distraction testing, and evidence of capsular changes on magnetic resonance imaging. Furthermore, these patients improve with revision surgery for capsular repair at midterm follow-up.

High Degree of Variability in Reporting of Clinical and Patient-Reported Outcomes After Hip Arthroscopy

2017 ◽  
Vol 46 (12) ◽  
pp. 3040-3046 ◽  
Author(s):  
Austin V. Stone ◽  
Cale A. Jacobs ◽  
T. David Luo ◽  
Molly C. Meadows ◽  
Shane J. Nho ◽  
...  
Keyword(s):  
Outcome Measures ◽  
Hip Arthroscopy ◽  
Alpha Angle ◽  
Patient Reported Outcome ◽  
Harris Hip Score ◽  
Center Edge ◽  
Patient Reported ◽  
Study Characteristics ◽  
Size Standard ◽  
Pro Instruments

Background: Hip arthroscopy for the treatment of intra-articular pathology is a rapidly expanding field. Outcome measures should be reported to document the efficacy of arthroscopic procedures; however, the most effective outcome measures are not established. Purpose: To evaluate the variability in outcomes reported after hip arthroscopy and to compare the responsiveness of patient-reported outcome (PRO) instruments. Study Design: Systematic review. Methods: We reviewed primary hip arthroscopy literature between January 2011 and September 2016 using the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Patient and study characteristics were recorded. Pre- and postoperative means and SDs of PROs were recorded from articles that used 2 or more PROs with a 1-year minimum follow-up. From this subset of articles, we compared the responsiveness between PRO instruments using the effect size, standard response mean, and relative efficiency. Results: We identified 130 studies that met our inclusion/exclusion criteria, which totaled 16,970 patients (17,511 hips, mean age = 37.0 years, mean body mass index = 25.9 kg/m2). Radiographic measures were reported in 100 studies. The alpha angle and center-edge angle were the most common measures. Range of motion was reported in 81 of 130 articles. PROs were reported in 129 of 130 articles, and 21 different PRO instruments were identified. The mean number of PROs per article was 3.2, and 78% used 2 or more PROs. The most commonly used PRO was the modified Harris Hip Score, followed by the Hip Outcome Score (HOS)–Activities of Daily Living, HOS-Sport, visual analog scale, and Nonarthritic Hip Score (NAHS). The 2 most responsive PRO tools were the International Hip Outcome Tool (iHOT)–12 and the NAHS. Conclusion: Outcomes reporting is highly variable in the hip arthroscopy literature. More than 20 different PRO instruments have been used, which makes comparison across studies difficult. A uniform set of outcome measures would allow for clearer interpretation of the hip arthroscopy literature and offer potential conclusions from pooled data. On the basis of our comparative responsiveness results and previously reported psychometric properties of the different PRO instruments, we recommend more widespread adoption of the iHOT PROs instruments to assess hip arthroscopy outcomes.

scholarly journals Patient-reported results of simultaneous direct anterior approach and posterolateral approach total hip arthroplasties performed in the same patients

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Zhi Yang ◽  
Shuo Feng ◽  
Kai-Jin Guo ◽  
Guo-Chun Zha
Keyword(s):  
Blood Loss ◽  
Anterior Approach ◽  
Operative Time ◽  
Direct Anterior Approach ◽  
Hip Pain ◽  
Posterolateral Approach ◽  
Harris Hip Score ◽  
Intraoperative Blood Loss ◽  
Total Hip ◽  
Patient Reported

Abstract Background Several studies have compared clinical results of the direct anterior approach (DAA) and the posterolateral approach (PLA) in total hip arthroplasty (THA); however, the effect of the surgical approach on outcome of THA remains controversial. Most of these studies used two distinct groups of patients, and THAs were performed by different surgeons, using different designs of prosthesis. These confounding factors may limit the strength of the conclusions. The purpose of this prospective, simultaneous bilateral randomized study was to investigate whether patients would perceive the difference between the direct anterior approach (DAA) and the posterolateral approach (PLA) after THA. Materials and methods Among 20 patients scheduled to undergo same-day bilateral THA between October 2017 and August 2019, one hip was randomly assigned to DAA and the other to PLA. Patient-reported outcome measures [Hip disability and Osteoarthritis Outcome Score (HOOS), patients’ hip pain on mobilization] and physician-assessed measures [Harris Hip Score (HHS), operative time, intraoperative blood loss, cup abduction, cup anteversion, stem orientation, and incidence of complications (intraoperative fracture, nerve damage, incisional problem, or postoperative dislocation)] were compared. Results All patients were followed up for 12 months. Hip pain was significantly less with DAA-THA compared with PLA-THA at postoperative 1, 3, and 7 days (p < 0.05). There was no clinical difference between DAA-THA and PLA-THA in terms of the VAS, HOOS, or HSS at 6 weeks and 3, 6, and 12 months postoperatively (p > 0.05). DAA-THA had a longer operative time and shorter length of incision compared with PLA-THA. There was no statistical difference between DAA-THA and PLA-THA in terms of intraoperative blood loss, cup abduction, cup anteversion, stem orientation, and perioperative complications (p > 0.05). Conclusions This study demonstrates that DAA-THA and PLA-THA could provide comparable HHS and HOOS at all follow-ups. Compared with PLA-THA, DAA-THA is associated with less hip pain within postoperative 7 days and shorter incision length, but longer operative time. Level of evidence Level I, therapeutic study. Trial registration Chinese Clinical Trail Registry, ChiCTR1800019816. Registered 30 November 2018—retrospectively registered, http://www.chictr.org.cn/showproj.aspx?proj=30863

scholarly journals Prospective Randomized Comparison of Capsule Management Techniques During Hip Arthroscopy

2019 ◽  
Vol 7 (3_suppl2) ◽  
pp. 2325967119S0020 ◽  
Author(s):  
Kostas John Economopoulos ◽  
Christopher Y. Kweon
Keyword(s):  
Activities Of Daily Living ◽  
Hip Arthroscopy ◽  
Daily Living ◽  
Alpha Angle ◽  
Labral Repair ◽  
Harris Hip Score ◽  
Outcome Score ◽  
Patient Reported ◽  
Management Techniques

Objectives: Capsular management during hip arthroscopy remains controversial. Studies evaluating this topic consist mostly of retrospective comparative reviews of prospectively gathered data on a large series of patients. The purpose of this study was to perform a prospective randomized trial to comparatively assess three commonly performed capsule management techniques. It was hypothesized that capsular closure during hip arthroscopy would result in superior outcomes compared to non-closing capsulotomy management techniques. Methods: Patients undergoing hip arthroscopy were randomly assigned into three groups at the time of surgery: 1) T-capsulotomy without closure (TC), 2) interportal capsulotomy without closure (IC), and 3) interportal capsulotomy with closure (CC). Inclusion criteria included patients with labral tear on advanced imaging, cam lesion with alpha angle greater than 55 degrees, center-edge angle less than 40 degrees, and Tönnis grade 0 or 1. Patients younger than 18, older than 55, or those with signs of clinical hip hypermobility or radiographic dysplasia were excluded from the trial. All patients underwent labral repair and femoral osteoplasty. Modified Harris Hip Score (mHHS), Hip Outcome Score-Activities of Daily Living (HOS-ADL), and Hip Outcome Score-Sports Specific Subscale (HOS-SSS) was obtained preoperatively and at intervals up to 2 years. Other outcomes obtained included need for future hip surgery. Results: 50 patients were randomly allocated into each group. Patient demographics, preoperative patient-reported outcomes (PROs) and radiographic measures of impingement were similar between all three groups. Revision hip arthroscopy was performed in 5 TC patients, 2 IC patients and 0 CC patients (p=0.17). Conversion to hip arthroplasty occurred in 4 patients in the TC group, none in the IC or CC groups (p=0.48). All three groups showed increased PRO scores postoperatively compared to preoperative values (p<0.01). The CC group when compared to the TC group demonstrated superior mHHS (86.2 vs 76), HOS-ADL (85.6 vs 76.8), and HOS-SSS (74.4 vs 65.3) at the final 2 year follow up (p<0.001). The IC group demonstrated more modest improvements in outcomes compared to the TC group. The CC group showed greater improvement in HOS-SSS compared to the IC group at early follow up (65.6 vs 55.1, p>.001) that was not maintained at 2 years (74.4 vs 71.4, p=.28). Conclusion: Patients undergoing capsular closure during hip arthroscopy showed improved patient-reported and surgical outcomes compared to those with unrepaired T-capsulotomy or interportal capsulotomy. These results suggest that repair after capsulotomy may be a favorable arthroscopic capsule management technique, especially in respect to optimizing postoperative activities of daily living.

PROMIS Versus Legacy Patient-Reported Outcome Measures in Patients Undergoing Surgical Treatment for Symptomatic Acetabular Dysplasia

2020 ◽  
Vol 48 (2) ◽  
pp. 385-394 ◽  
Author(s):  
Deborah J. Li ◽  
John C. Clohisy ◽  
Maria T. Schwabe ◽  
Elizabeth L. Yanik ◽  
Cecilia Pascual-Garrido
Keyword(s):  
Outcome Measures ◽  
Acetabular Dysplasia ◽  
Patient Reported Outcome Measures ◽  
Patient Reported Outcome ◽  
Patient Reported ◽  
Ceiling Effects ◽  
The Mean ◽  
Symptomatic Acetabular Dysplasia ◽  
Good Agreement

Background: No previous study has investigated how the Patient-Reported Outcomes Measurement Information System (PROMIS) performs compared with legacy patient-reported outcome measures in patients with symptomatic acetabular dysplasia treated with periacetabular osteotomy (PAO). Purpose: To (1) measure the strength of correlation between the PROMIS and legacy outcome measures and (2) assess floor and ceiling effects of the PROMIS and legacy outcome measures in patients treated with PAO for symptomatic acetabular dysplasia. Study Design: Cohort study (Diagnosis); Level of evidence, 2. Methods: This study included 220 patients who underwent PAO for the treatment of symptomatic acetabular dysplasia. Outcome measures included the Hip disability and Osteoarthritis Outcome Score (HOOS) pain, HOOS activities of daily living (ADL), modified Harris Hip Score (mHHS), PROMIS pain, and PROMIS physical function subsets, with scores collected preoperatively and/or postoperatively at a minimum 12-month follow-up. The change in mean scores from preoperatively to postoperatively was calculated only in a subgroup of 57 patients with scores at both time points. Distributions of the PROMIS and legacy scores were compared to evaluate floor and ceiling effects, and Pearson correlation coefficients were calculated to evaluate agreement. Results: The mean age at the time of surgery was 27.7 years, and 83.6% were female. The mean follow-up time was 1.5 years. Preoperatively, neither the PROMIS nor the legacy measures showed significant floor or ceiling effects. Postoperatively, all legacy measures showed significant ceiling effects, with 15% of patients with a maximum HOOS pain score of 100, 29% with a HOOS ADL score of 100, and 21% with an mHHS score of 100. The PROMIS and legacy instruments showed good agreement preoperatively and postoperatively. The PROMIS pain had a moderate to strong negative correlation with the HOOS pain ( r = −0.66; P < .0001) and mHHS ( r = −0.60; P < .0001) preoperatively and the HOOS pain ( r = −0.64; P < .0001) and mHHS ( r = −0.64; P < .0001) postoperatively. The PROMIS physical function had a moderate positive correlation with the HOOS ADL ( r = 0.51; P < .0001) and mHHS ( r = 0.49; P < .0001) preoperatively and a stronger correlation postoperatively with the HOOS ADL ( r = 0.56; P < .0001) and mHHS ( r = 0.56; P < .0001). Conclusion: We found good agreement between PROMIS and legacy scores preoperatively and postoperatively. PROMIS scores were largely normally distributed, demonstrating an expanded ability to capture variability in patients with improved outcomes after treatment.

scholarly journals Outcomes After Arthroscopic Management of Subspinous Impingement in Borderline Hip Dysplasia

2018 ◽  
Vol 6 (7_suppl4) ◽  
pp. 2325967118S0011
Author(s):  
Daniel Feghhi ◽  
Srino Bharam ◽  
Jonathan Shearin
Keyword(s):  
Repeated Measures ◽  
Hip Dysplasia ◽  
Alpha Angle ◽  
Patient Reported Outcome ◽  
Harris Hip Score ◽  
Arthroscopic Management ◽  
Hip Impingement ◽  
Patient Reported

Objectives: Arthroscopic management of femoroacetabular impingement in the setting of borderline hip dysplasia is controversial. There is concern for iatrogenic hip instability with rim-resection in an already structurally compromised acetabulum. Recently, there has been increased awareness of a prominent anterior inferior iliac spine (AIIS) resulting in subspinous impingement. The purpose of this study was to report on the outcomes of arthroscopic subspinous decompression in patients with symptomatic hip impingement and borderline hip dysplasia. Methods: An IRB approved retrospective study of patients with symptomatic hip impingement, borderline dysplasia (LCEA 18-24°) and prominent AIIS who failed conservative management and subsequently underwent arthroscopic subspinous decompression was conducted. Eighteen patients, 19 hips (4 male and 14 female, average age 28) were identified from 2012 to 2015. 3D-CT imaging was used to categorize AIIS morphology into Type 1, 2 or 3 (Hetsroni classification). Alpha angle and femoral version were determined as well. Patient-reported outcome scores (PROs) consisting of the modified Harris Hip Score (mHHS), Hip Outcome Score-Activities of Daily Living (HOS-ADL) and Sport-Specific Subscale (HOS-SSS) were obtained preoperatively and at an average of 44 months postoperative (range, 23-61 months). Results: There were no postoperative complications or symptoms of instability. Fourteen hips were of Type 2 AIIS morphology and 6 were categorized as type 1. Femoral osteoplasty was performed in 17 hips (average alpha angle 66°). Repeated measures ANOVA revealed a significant improvement in all PROs from preop to latest follow-up; (mHHS 64.7, 93.4, p< .001; HOS-ADL 62.1, 94.6, p< .001; HOS-SSS 26.5, 93.4 p< .001). An ANCOVA revealed patients with type 2 AIIS had a significantly higher post-op mHHS than those with a type 1 morphology; (88.3, 95.6, p< .01). Conclusion: Arthroscopic AIIS decompression in patients with co-existing borderline dysplasia and subspinous impingement leads to favorable outcomes without compromising hip stability.

scholarly journals Development and External Validation of a Novel Clinical Score to Quantify the Presence of Instability Characteristics in Patients with Borderline Acetabular Dysplasia

2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0043
Author(s):  
Elizabeth Graesser ◽  
Lee Rhea ◽  
Cecilia Pascual-Garrido ◽  
John Clohisy ◽  
Jeffrey Nepple ◽  
...  
Keyword(s):  
Acetabular Dysplasia ◽  
External Validation ◽  
Alpha Angle ◽  
Hip Instability ◽  
Discriminatory Ability ◽  
Edge Angle ◽  
C Statistic ◽  
Center Edge ◽  
Center Edge Angle ◽  
Multicenter Prospective Cohort

Objectives: Treatment of borderline acetabular dysplasia is controversial. The existing literature lacks direct comparisons of different treatment approaches and focuses on lateral center edge angle (LCEA), failing to account for other important diagnostic characteristics. The purpose of this study was (1) to determine the most important characteristics in determining hip instability in this population, and (2) to develop a nomogram for clinical use and calculation of the Borderline Hip Instability Score (BHIS), and (3) to externally validate the BHIS in a multicenter prospective cohort of patients with borderline acetabular dysplasia. Methods: The current study included two parts. In Part 1, this study utilized a retrospective cohort study of 186 hips (178 patients) undergoing surgical treatment in setting of borderline acetabular dysplasia (LCEA 20°-25°) from a single surgeon experienced in arthroscopic and open techniques. Patients were excluded if over 40 years of age, Tonnis grade ≥2, prior ipsilateral surgery, or residual pediatric or neuromuscular disease. Multivariate analysis determined characteristics associated with presence of instability (treated with PAO +/- hip arthroscopy) or absence of instability (treated with isolated hip arthroscopy) based on clinical diagnosis of the single surgeon. During the study period, 39.8% of the cohort underwent PAO. Multivariate analysis with bootstrapping was performed and results were transformed into a nomogram and BHIS (higher score representing more instability). In Part 2, the BHIS was externally validated in a cohort of 114 patients with borderline acetabular dysplasia enrolled in a multicenter prospective cohort study across 10 other surgeons (with varied treatment approaches from arthroscopy to open procedures). Results: In Part 1, the most parsimonious and best fit model included 4 variables associated with instability: acetabular inclination (AI), anterior center edge angle (ACEA), maximum alpha angle, and internal rotation in 90 degrees of flexion (IRF). Odds ratio estimates and 95% confidence limits were 1.50 (1.28-1.76), 0.92 (0.86-0.99), 0.94 (0.90-0.98), and 1.11 (1.07-1.17), respectively. Notably, sex and LCEA were not significant predictors. The BHIS demonstrated excellent predictive (discriminatory) ability with c-statistic=0.89. Mean BHIS in the population was 50.0 (instability 57.7 ±7.9 vs. non-instability 44.8±7.3, p<0.001). BHIS demonstrated excellent predictive (discriminatory) ability with c-statistic=0.89. In Part 2, BHIS maintained excellent c-statistic=0.92 in external validation. Mean BHIS in this cohort was 53.9 (instability 66.5±11.5 vs. non-instability 43.0±10.8, p<0.001). Conclusion: In patients with borderline acetabular dysplasia, AI, ACEA, maximum alpha angle, and IRF were key factors in diagnosing significant instability treated with PAO. The BHIS effectively quantifies relative role of each factor and characterizes aspects of instability compared to the mean (BHIS=50) in this population. The BHIS score allowed for good differentiation of patients with and without instability in the development cohort, as well as the external validation cohort. Use of the BHIS score may facilitate efficient clinical characterization of important patient characteristics in the setting of borderline acetabular dysplasia.

Patients With Borderline Hip Dysplasia Achieve Clinically Significant Outcome After Arthroscopic Femoroacetabular Impingement Surgery: A Case-Control Study With Minimum 2-Year Follow-up

2019 ◽  
Vol 47 (11) ◽  
pp. 2636-2645 ◽  
Author(s):  
Edward C. Beck ◽  
Benedict U. Nwachukwu ◽  
Jorge Chahla ◽  
Kyleen Jan ◽  
Timothy C. Keating ◽  
...  
Keyword(s):  
Hip Arthroscopy ◽  
Hip Dysplasia ◽  
Alpha Angle ◽  
Patient Reported Outcome ◽  
Harris Hip Score ◽  
Acetabular Coverage ◽  
Patient Reported ◽  
Clinically Significant ◽  
Modified Harris Hip Score ◽  
Preoperative Predictors

Background: There is a growing trend for hip arthroscopists to treat patients with borderline hip dysplasia (BHD) for femoroacetabular impingement syndrome (FAIS) without addressing the acetabular coverage. However, the literature of outcomes and failure rates for these patients is conflicting. Purpose: (1) To identify whether patients with BHD achieved 2-year similar patient-reported outcome, minimal clinically important difference (MCID), and patient acceptable symptomatic state (PASS) when compared with patients without BHD and (2) to identify predictors for achieving the MCID and PASS among patients with BHD who are undergoing hip arthroscopy for FAIS. Study Design: Cohort study; Level of evidence, 3. Methods: Data from consecutive patients who underwent primary hip arthroscopy with routine capsular closure for the treatment of FAIS between January 2012 and January 2017 were collected and retrospectively analyzed. Patients with BHD (lateral center-edge angle [LCEA], 20°-25°) were matched 2:1 by age, sex, and body mass index (BMI) to control patients with normal acetabular coverage (LCEA, >25°-40°). Patient-reported outcome, MCID, and PASS were compared between the groups. Multivariate logistic regression analysis identified significant predictors of achieving the MCID and PASS in the BHD group. Results: The MCID in the BHD group was defined as 9.2, 13.7, 8.5, and 15.2 for the Hip Outcome Score–Activities of Daily Living, Hip Outcome Score–Sport Specific, modified Harris Hip Score, and iHOT-12, respectively. Threshold scores for achieving the PASS in both groups were 87.9, 76.4, 78.1, and 60.0. A total of 112 patients were identified as having BHD (LCEA, 20°-25°) and were matched to 224 controls. Both groups saw statistically significant increases in score averages over the 2-year period; however, the differences between them were not statistically significant ( P > .05 for all). There was no statistical difference in the frequency of the BHD and non-BHD cohorts achieving the MCID on at least 1 threshold score (86.6% vs 85.6%, P = .837) and the PASS (78.6% vs 79.8%, P = .79). There was, however, a statistically significant difference between the rates of patients with and without BHD achieving the PASS on the modified Harris Hip Score threshold (62.5% vs 74.5%, P = .028). The final logistic models demonstrated that lower BMI (odds ratio [OR], 0.872; P = .029), lower preoperative alpha angle (OR, 0.965; P = .014), and female sex (OR, 3.647; P = .03) are independent preoperative predictors of achieving the MCID, while lower preoperative alpha angle (OR, 0.943; P = .018) and self-reported limp (OR, 18.53; P = .007) are independent preoperative predictors of achieving the PASS. Conclusion: Outcome improvements in patients with BHD who are undergoing arthroscopic treatment with capsular closure for FAIS are not significantly different from patients with normal acetabular coverage. Lower BMI, lower alpha angle, absence of limp, and female sex are preoperative predictors of achieving meaningful clinically significant outcome improvements in patients with BHD.

scholarly journals Pre-operative and Post-Operative Alpha Angles are Significant Independent Predictors of Patient-Reported Outcome Measures at Two Years After Hip Arthroscopy

2018 ◽  
Vol 6 (7_suppl4) ◽  
pp. 2325967118S0017
Author(s):  
Drew A. Lansdown ◽  
Kyle Kunze ◽  
Gift Ukwuani ◽  
Brian Robert Waterman ◽  
William H. Neal ◽  
...  
Keyword(s):  
Hip Arthroscopy ◽  
Univariate Analysis ◽  
Arthroscopic Surgery ◽  
Alpha Angle ◽  
Joint Space Width ◽  
Postoperative Outcomes ◽  
Harris Hip Score ◽  
Multivariate Modeling ◽  
Center Edge ◽  
Patient Reported

Objectives: Residual impingement after hip arthroscopy for femoroacetabular impingement (FAI) is a common cause for re-operation; however, the relationship between preoperative and postoperative radiographic parameters and patient-reported outcomes has not been defined. Methods: 749 consecutive patients were reviewed two years after primary hip arthroscopy. Patients undergoing revision surgery were excluded. Pre-operative and post-operative radiographs were analyzed to measure the alpha angle on standardized anteroposterior (AP) pelvis, Dunn-lateral, and false profile (FP) views and anterior and lateral center-edge angles (ACEA, LCEA). Univariate analysis evaluated the association between demographic variables, radiographic measures and hip outcome scores (Hip Outcome Score (HOS)-Activities of Daily Living (ADL), HOS-Sports Specific (SS), and Modified Harris Hip Score (mHHS)). Multivariate modeling was subsequently performed. Significance was defined as p<0.05. Results: 706 patients with mean age of 33.2±12.3 years and mean BMI 25.1± 5kg/m2 were included for final analysis. The alpha angle on the AP, Dunn-lateral, and FP views and the ACEA and LCEA decreased after surgery (p<0.001 for all). Significant univariate correlations with the postoperative HOS-ADL included age, BMI, pre-operative AP, FP, and Dunn and postoperative FP alpha angles. Postoperative HOS-SS was correlated with age, BMI, medial post-operative joint space width (JSW), pre-operative AP, FP, and Dunn and postoperative FP alpha angles, and pre-operative and post-operative (ACEA). Postoperative mHHS correlated with age, BMI, post-operative lateral JSW, pre-operative AP, FP, and Dunn and postoperative FP and Dunn alpha angles, and post-operative ACEA. Multivariate modeling (Table 2) demonstrated that preoperative and postoperative FP alpha angles were independent predictors of postoperative outcomes. Conclusion: Pre-operative and post-operative alpha angles were negatively correlated with the HOS-ADL, HOS-SS, and mHHS at 2 years after arthroscopic surgery for FAI. Specifically, pre-operative and postoperative FP alpha angles were independent predictors of postoperative outcomes. These results highlight the importance of resecting anterior cam lesions to prevent residual impingement and inferior outcomes. [Table: see text]

scholarly journals Prospective Analysis of Arthroscopic Hip Anatomic Labral Repair Utilizing Knotless Suture Anchor Technology: The Controlled-Tension Anatomic Technique at Minimum 2-Year Follow-up

2020 ◽  
Vol 8 (7) ◽  
pp. 232596712093507
Author(s):  
David R. Maldonado ◽  
Sarah L. Chen ◽  
Jeffery W. Chen ◽  
Jacob Shapira ◽  
Philip J. Rosinksy ◽  
...  
Keyword(s):  
Arthroscopic Surgery ◽  
Alpha Angle ◽  
Labral Tear ◽  
Labral Repair ◽  
Harris Hip Score ◽  
Labral Tears ◽  
Femoroacetabular Impingement Syndrome ◽  
Patient Reported ◽  
The Mean

Background: Labral tears are the most common abnormalities in patients undergoing hip arthroscopic surgery. Appropriate management is crucial, as it has been shown that better overall outcomes can be achieved with labral restoration. Purpose: To report the patient-reported outcomes (PROs) at minimum 2-year follow-up of patients who underwent hip arthroscopic surgery for labral tear repair using the knotless controlled-tension anatomic technique in the setting of femoroacetabular impingement syndrome (FAIS). Study Design: Case series; Level of evidence, 4. Methods: Data were prospectively collected for patients who underwent hip arthroscopic surgery for FAIS for labral tear repair using the knotless controlled-tension anatomic technique. Patients were excluded if they had prior hip conditions, prior ipsilateral surgery, Tönnis grade >1, a lateral center-edge angle (LCEA) <25°, or workers’ compensation claims. Preoperative and postoperative scores at minimum 2-year follow-up were recorded for the modified Harris Hip Score (mHHS), Nonarthritic Hip Score (NAHS), Hip Outcome Score–Sport-Specific Subscale (HOS-SSS), International Hip Outcome Tool (iHOT-12), and visual analog scale (VAS) for pain. The proportion of patients who achieved the minimal clinically important difference (MCID) or patient acceptable symptomatic state (PASS) for the mHHS, HOS-SSS, and iHOT-12 were also reported. Results: A total of 309 hips were included. The mean patient age was 36.2 years (range, 12.8-75.9 years). The mean preoperative LCEA and alpha angle were 31.9° and 57.1°, respectively. A significant improvement on the mHHS (62.6 ± 15.7 preoperatively vs 86.9 ± 16.2 at 2-year follow-up), NAHS (63.1 ± 16.7 vs 86.1 ± 16.7), and HOS-SSS (39.8 ± 22.0 vs 74.2 ± 27.3) was found ( P < .001 for all). A significant decrease was shown for VAS scores ( P < .001). Also, 78.6% and 82.2% of patients achieved the MCID and PASS for the mHHS, respectively; 60.8% and 69.9% of patients met the MCID and PASS for the HOS-SSS, respectively; and the MCID for the iHOT-12 was met by 77.3% of patients. Conclusion: In the setting of FAIS and labral tears, patients who underwent hip arthroscopic surgery for labral tear repair using the knotless controlled-tension anatomic technique demonstrated significant improvement in several validated PRO measures, the VAS pain score, and patient satisfaction at a minimum 2 years of follow-up. Based on this evidence, labral tear repair using the knotless controlled-tension anatomic technique seems to be a safe option.

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