Editorial Commentary: Patients With Lumbar Pathology or Ipsilateral Knee Pathology Improve After Hip Arthroscopy, but Outcomes Are Not as Good as in Patients With Femoroacetabular Impingement Syndrome Without Concomitant Pathology.

From the lumbar spine to foot, the joints of the lower extremity are all intimately connected. Their movements are synchronized in a complex biomechanical dance. Pain in one joint tends to affect the joint above and joint below. Understanding the influence of adjacent-joint disease on the hip can help us better counsel patients undergoing hip surgery. Low-back pathology has been shown to negatively influence outcomes after hip arthroscopy. Ipsilateral knee pain appears to do the same. Patients with femoroacetabular impingement syndrome with ipsilateral knee pain should be counseled that their outcomes may not be quite as good as those without knee pain, but they should be able to expect meaningful improvement of their symptoms, both at the hip and at the knee after hip arthroscopy.

Telemedicine: An Effective Tool for Patient-Physician Communication.

The purpose of this study was to evaluate the effectiveness of telemedicine appointments in a tertiary orthopedic hip clinic during the COVID-19 pandemic, as a substitute for traditional in-person visits. One hundred sixty-three patients had a telemedicine visit from March to September 2020. Patients were divided into two cohorts. The presurgical group included all patients who had not undergone any prior surgical hip procedures. The pre-surgical group was further subdivided into two groups based on the purpose of the visit: conservative treatment and imaging review. Patients who were indicated for surgical treatment from these two groups were identified to assess their compliance with the surgical indication. The effectiveness was measured by assessing whether patients required an in-person visit before the scheduled follow-up after the telemedicine visit for further medical assessment. Fifty (30.7%) men and 113 (69.3%) women had a telemedicine visit during the 6-month period. The mean age was 43.68 (±16.95) years. There were 92 (56.4%) patients in the presurgical group, of whom 41% followed up after indication for conservative treatment and 59% visited to review imaging. From these groups, 27% were indicated for surgical treatment. The postsurgical group contained 71 (43.6%) patients, divided into three groups based on their surgery date: 0 to 3 months (27%), 4 to 12 months (59%), and more than 12 months (14%). All patients were compliant with the scheduled follow-up after their telemedicine visit. This study showed that telemedicine can be an effective tool for patient-physician communication, obviating the need for subsequent follow-up beyond regularly scheduled visits. [Orthopedics. 2023;46(3):e173-e178.].

Outcomes Following Primary Total Hip Arthroplasty With Concomitant Gluteus Medius Repair Using the Direct Anterior Approach.

Outcomes following total hip arthroplasty (THA) with concomitant gluteus medius (GM) repair using the direct anterior approach (DAA) are scarce. The primary purpose of this study was to report patient-reported outcome measures (PROMs) with 2-year follow-up of patients with osteoarthritis and GM tear who underwent primary THA and GM repair through the DAA. The secondary purpose was to compare these outcomes with a benchmark propensity-matched control group who underwent a DAA THA without GM tear. Patients were eligible if they received a primary THA and GM repair via the DAA between January 2015 and October 2018 and had baseline PROMs with 2-year follow-up. Patients were excluded if they had workers' compensation or were unwilling to participate. PROM subanalysis was performed between patients and a propensity-matched control group with DAA THA without GM tear. Fourteen patients were included in the study, all of whom were female. Significant improvement for all PROMs and high rate of achieving the minimal clinically important difference (MCID) at 2-year follow-up were reported. All patients were propensity-matched to 28 patients for sex, age, and body mass index. Preoperative PROMs between groups were similar, and both groups reported comparable improvement, satisfaction, and MCID achievement at 2-year follow-up. Primary THA with concomitant GM repair using the DAA yielded good functional outcomes and a high rate of MCID achievement at 2-year follow-up. Based on these results, the DAA can be used safely to address symptomatic GM tears during THA. Furthermore, these outcomes were comparable to a propensity-matched control group without GM tear. [Orthopedics. 2023;46(1):39-46.].

The Circumferential Femoroplasty: An All-Arthroscopic Technique for Addressing a Challenging Hip Deformity.

Femoroacetabular impingement is recognized as a common cause of hip pain. Cam-type femoroacetabular impingement results from abnormal contact between an aspherical femoral head and the acetabular rim during hip range of motion, leading to labral tearing, cartilage damage, and, eventually, osteoarthritis. Arthroscopic correction of this bony deformity has been well described, particularly in the anterolateral quadrant of the femoral neck. Some deformities extend well beyond this quadrant, involving most or all of the circumference of the femoral neck, making arthroscopic decompression a challenge. We present a post-less, all-arthroscopic technique for performing a circumferential cam decompression using 3-dimensional preoperative planning software and interactive fluoroscopy-integrated computer vision interface.

Outcomes of Staged Bilateral Hip Arthroscopic Surgery in the Context of Femoroacetabular Impingement Syndrome: A Nested Matched-Pair Control Study Focusing on the Effect of Time Between Procedures.

BACKGROUND: Bilateral hip symptoms from femoroacetabular impingement syndrome (FAIS) are a common finding in patients regardless of athletic involvement. Oftentimes, patients and surgeons choose to stage bilateral hip arthroscopic surgery. PURPOSE/HYPOTHESIS: The purpose of this study was (1) to compare minimum 2-year outcomes between patients who underwent staged bilateral hip arthroscopic surgery for FAIS to a propensity score-matched control group that underwent unilateral hip arthroscopic surgery and (2) to investigate the effect of time between bilateral procedures on patient-reported outcomes (PROs). We hypothesized that, after bilateral hip arthroscopic surgery, the improvement in outcomes would be similar to that after unilateral hip arthroscopic surgery and the time duration between bilateral procedures would not affect the final outcome. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were retrospectively reviewed on a consecutive series of patients who underwent primary hip arthroscopic surgery at our institution between June 2008 and November 2017. Patients who underwent bilateral hip arthroscopic surgery with minimum 2-year PROs for the modified Harris Hip Score (mHHS), the Nonarthritic Hip Score (NAHS), the Hip Outcome Score-Sports Specific Subscale (HOS-SSS), patient satisfaction, and a visual analog scale (VAS) for pain were included. The study group was matched 1:1 based on age, sex, and body mass index to a control group that only required unilateral hip arthroscopic surgery. Additionally, a subanalysis was performed on the study group to determine the effect of time between arthroscopic procedures. Rates of achieving the minimal clinically important difference (MCID) and Patient Acceptable Symptom State (PASS) for the mHHS and HOS-SSS were determined. The P value was set at <.05. RESULTS: A total of 205 patients (410 hips) were included. The mean age and body mass index of the study group were 32.3 ± 13.2 years and 25.0 ± 5.1, respectively. All 410 hips that met the inclusion criteria were matched. There were no significant differences in patient, radiographic, or procedural data. A significant and comparable improvement was reported for all PRO measures and the VAS (P < .0001) in both groups. Similarly, rates of achieving the MCID and PASS were comparable. After dividing the study group based on whether the contralateral procedure was performed <3 months or >3 months after the first procedure, it was determined that patients had a significant improvement and favorable outcomes regardless of time between bilateral procedures. CONCLUSION: Patients who underwent unilateral and bilateral hip arthroscopic surgery for FAIS had a significant and comparable improvement in PROs at a minimum 2-year follow-up. A time interval of <3 months or >3 months between bilateral procedures did not affect PROs.

Outcomes After Primary Hip Arthroscopy in Athletes Older Than 40 Years Compared With Nonathletes.

BACKGROUND: Master athletes (MAs), or athletes older than 40 years, make up a patient population whose outcomes after primary arthroscopic hip surgery are largely unknown. PURPOSE: To report minimum 2-year outcomes of MAs after primary hip arthroscopy and compare their results to a propensity-matched nonathlete (NA) control group. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were prospectively collected between February 2008 and April 2019 and retrospectively reviewed for all patients who underwent primary hip arthroscopy. Patients were included if they were older than 40 years and had preoperative data for the modified Harris Hip Score, Nonarthritic Hip Score, Hip Outcome Score-Sports Specific Subscale, and visual analog scale score for pain. MAs reported participating in organized sports competition within 1 year before surgery and were propensity matched to a control group of patients who did not report participating in organized sports competition (NAs). Patient characteristics, radiographic and intraoperative findings, surgical procedures performed, and patient-reported outcome measures (PROMs) were reported and compared between the groups. The rates of achieving the minimal clinically important difference and maximum outcome improvement satisfaction threshold were recorded. RESULTS: A total of 366 hips were eligible; 328 (89.6%) had adequate follow-up data. 328 patients met inclusion criteria but 88 were not included due to the restrictions of the propensity score match ratio. Of these, 80 hips (76 patients) were classified as MAs (mean age, 48.9 ± 6.2 years) and were propensity matched 1:2 to an NA control group. Groups were comparable for baseline demographic and radiographic parameters, intraoperative findings, and procedures performed. MAs had significantly better baseline and minimum 2-year PROM scores (P < .05), higher satisfaction (P = .01), and higher rates of achieving clinically meaningful improvement across all the outcome tools used (P < .05). MAs, when compared with NAs, had lower rates of secondary arthroscopy (0% vs 7.5%, respectively; P = .001) and conversion to total hip arthroplasty (12.5% vs 26.9%, respectively; P = .011). CONCLUSION: MAs demonstrated favorable outcomes after primary hip arthroscopy. When compared with a propensity score-matched control group of NA patients, MAs demonstrated better preoperative and postoperative PROMs, higher rates of clinically meaningful improvement, and lower rates of secondary arthroscopy and conversion to total hip arthroplasty. Absolute improvements in PROM scores were similar between the groups.

Maximal Outcome Improvement Willingness Thresholds Are Predictive of a Patient's Willingness to Undergo the Same Surgery, in Retrospect, Given the Known Outcome of Their Primary Hip Arthroscopy.

Purpose: To determine the percent maximal outcome improvement willingness thresholds (MOWTs) for the Nonarthritic Hip Score (NAHS) and the visual analog scale (VAS) for pain that were associated with a patient's willingness to undergo surgery, in retrospect, given the known outcome of their primary hip arthroscopy with concomitant endoscopy for gluteus medius (GM) tear repair. Methods: An anchor question was provided to patients who underwent primary hip arthroscopy for femoroacetabular impingement syndrome with concomitant endoscopic GM tear repair between April 2008 to April 2020. Patients were included if they answered the anchor question and had baseline and postoperative minimum 1-year follow-up scores for the NAHS and VAS. Patients were excluded if they had a previous ipsilateral hip surgery, Tönnis grade >1, hip dysplasia, previous hip conditions, or a preoperative score that was already at the maximum value for the NAHS and VAS scores. Receiver operating characteristic (ROC) analysis was used to determine the MOWT. Significance was indicated by a P value <.05. Results: A total of 107 patients (107 hips) were included, with 101 (94.4%) females and 6 (5.6%) males. The average age and body mass index was 56.20 ± 9.88 years and 28.80 ± 4.92 kg/m2, respectively. The average follow-up time was 54.89 ± 29.52 months. The ROC analysis determined that the MOWT for the mHHS and VAS were 54.7%, and 62.6%, respectively. The probability of a patient being willing to undergo surgery again if they met the MOWT was 85.8% and 85.6% for the NAHS and VAS, respectively. Conclusion: The MOWTs that were predictive of willingness to undergo surgery again following primary hip arthroscopy with concomitant endoscopy for GM tear repair were 54.7% and 62.6% for the NAHS, and VAS, respectively. Clinical Relevance: Outcome assessment has been a point of increasing emphasis in hip preservation surgery. Having a tool to measure whether patients would go through the process of surgery again knowing their current outcome status is important to understanding outcomes after surgery.

Effect of Cigarette Smoking on Midterm Outcomes After Arthroscopic Surgery for Femoroacetabular Impingement Syndrome: A Propensity-Matched Controlled Study With Minimum 5-Year Follow-up.

Background: There is limited literature evaluating patient-reported outcomes (PROs) in cigarette smokers undergoing hip arthroscopy for femoroacetabular impingement syndrome (FAIS) at midterm follow-up. Purpose: (1) To report minimum 5-year PROs for cigarette-smoking patients who underwent primary hip arthroscopy for FAIS and (2) to compare these results with a propensity-matched control group of never-smoking patients. Study Design: Cohort study; Level of evidence, 3. Methods: Data were collected for all patients who underwent primary hip arthroscopy for FAIS between June 2009 and March 2016. Patients were eligible if they indicated that they smoked cigarettes within 1 month of surgery and had minimum 5-year postoperative outcomes for the modified Harris Hip Score, Nonarthritic Hip Score, Hip Outcome Score-Sport Specific Subscale (HOS-SSS), and International Hip Outcome Tool-12 (iHOT-12). The percentages of patients achieving the Patient Acceptable Symptom State (PASS) and maximum outcome improvement satisfaction threshold were recorded. The study group was then propensity matched in a 1:2 ratio to patients who had never smoked for comparison. Results: Included were 35 patients (35 hips) with a mean age of 39.4 ± 13.0 years and mean follow-up of 64.6 ± 4.1 months. These patients demonstrated significant improvement from preoperatively to a minimum 5-year follow-up for all recorded PROs (P < .05). When compared with 70 control patients (70 hips), smoking patients demonstrated significantly worse preoperative scores for all PROs (P < .05). Study patients also demonstrated worse minimum 5-year scores for all recorded PROs compared with control patients, which did not reach statistical significance but trended toward significance for HOS-SSS (70.4 vs 81.9; P = .076) and iHOT-12 (74.7 vs 82.2; P = .122). Smoking patients also trended toward lower rates of achieving PASS for the iHOT-12 compared with never-smoking patients (50.0% vs 68.2%; P = .120). Conclusion: Patients who smoked cigarettes and underwent primary hip arthroscopy for FAIS demonstrated significant improvement in PROs at a minimum 5-year follow-up. When compared with a propensity-matched control group of never-smokers, they trended toward lower postoperative HOS-SSS and iHOT-12 scores and lower rates of achieving PASS on the iHOT-12.

Minimum 5-Year Outcomes After Primary Segmental Labral Reconstruction for Irreparable Labral Tears in the Hip With Hamstring Grafts: With a Subanalysis Comparing Autograft Versus Allograft.

BACKGROUND: Comparable short-term outcomes have been obtained using hamstring allografts versus autografts after primary segmental labral reconstruction (SLR). Midterm results have not yet been determined. PURPOSE: (1) To evaluate minimum 5-year patient-reported outcome (PRO) scores in patients who underwent primary SLR with hamstring grafts in the setting of femoroacetabular impingement syndrome (FAIS) and irreparable labral tears and (2) to compare the outcomes of hamstring autografts versus allografts in a subanalysis using propensity-matched groups. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Prospectively collected data were retrospectively reviewed for patients who underwent primary hip arthroscopy between September 2010 and November 2015. Patients were included if they underwent SLR using hamstring autografts or allografts and had preoperative and minimum 5-year PROs. The exclusion criteria were previous ipsilateral hip surgery or conditions, dysplasia, or Tönnis grade >1. Patients with autograft SLR were propensity matched 1 to 1 based on age, sex, and body mass index (BMI) to patients who underwent SLR using hamstring allografts. The minimal clinically important difference (MCID) and the Patient Acceptable Symptom State (PASS) were calculated. RESULTS: Overall, 48 patients (N = hips 48) were eligible to be included in this study, and 41 patients (n = 41 hips [85.4%]) had a minimum 5-year follow-up reporting significant improvements in all PROs. Within the entire cohort, 9.8% required a secondary arthroscopy, with a mean time of 19 ± 1.8 months, and survivorship was 82.9%. Of the 41 included patients, 15 underwent an SLR with a hamstring autograft and were matched to 15 patients with labral reconstruction using a hamstring allograft. Groups were similar for sex (P > .999), age (P = .775), and BMI (P = .486). The mean follow-up times were 80.8 ± 25.5 and 66.1 ± 8.3 months (P = .223) for the autograft and allograft groups, respectively. Baseline PROs, preoperative radiographic measurements, surgical findings, and intraoperative procedures were similar. The groups achieved significant and comparable improvements for all PROs (P < .0001), satisfaction (P = .187), and the rate of achieving the MCID and the PASS. However, a tendency for higher postoperative PROs favoring allograft reconstruction was found. CONCLUSION: At a minimum 5-year follow-up, patients who underwent primary arthroscopic SLR in the context of FAIS and irreparable labra, with either autograft or allograft hamstring tendons, reported significant improvements and comparable postoperative scores for all PROs, patient satisfaction, MCID, and PASS.

Pathologic Findings on Hip Arthroscopy in High-Level Athletes Competing in Flexibility Sports.

BACKGROUND: Athletes who compete in flexibility sports (FS) place unique demands on their hip joints because of the supraphysiologic range of motion required. PURPOSE: To compare the pathologic features, outcomes, and return-to-sports (RTS) rates of high-level athletes participating in FS who underwent hip arthroscopy for femoroacetabular impingement syndrome (FAIS) and labral tear against a propensity score-matched cohort of high-level athletes participating in non-flexibility sports (NFS). STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were prospectively collected and retrospectively reviewed for high-level athletes who underwent primary hip arthroscopy for FAIS from April 2008 to December 2018. Patients who participated in FS such as dancing, gymnastics, martial arts, figure skating, and cheerleading were propensity score matched by body mass index, age at time of surgery, sex, sports competition level, and labral treatment to a cohort of high-level athletes participating in all other sports, such as distance running, soccer, volleyball, and softball. Baseline patient characteristics, intraoperative findings, and surgical procedures were compared. Minimum 2-year patient-reported outcome measures were compared for the modified Harris Hip Score, Nonarthritic Hip Score, Hip Outcome Score-Sport Specific Subscale, and visual analog scale for pain and satisfaction. Rates of secondary surgery and RTS were compared. RESULTS: A total of 47 patients (50 hips) who participated in FS were included and propensity score matched to 130 patients (150 hips) who participated in NFS. Follow-up time was 37.5 ± 10.4 months (mean ± SD). Most patients (96.0%) were female with a mean age of 19.5 ± 7.3 years. FS athletes had significantly higher rates of femoral head cartilage lesions (Outerbridge ≥2; 12.0% vs 2.0%; P = .008) and ligamentum teres tears (48% vs 26%; P = .003). FS and NFS athletes demonstrated significant clinical improvements after surgery for all patient-reported outcome measures. Of the patients who attempted, 34 (75.6%) participating in FS were able to RTS while 11 (24.4%) were not because of ongoing hip issues. This was not significantly different than the NFS group (P = .073). CONCLUSION: High-level athletes who participated in FS and were treated for FAIS with hip arthroscopy exhibited higher rates of femoral head cartilage lesions and ligamentum teres tears requiring debridement when compared with a benchmark group of athletes who participated in other sports. Despite this, both groups demonstrated similar improvements in outcome scores and comparable rates of RTS at minimum 2-year follow-up.

Effect of Cigarette Smoking on Outcomes in Patients Undergoing Primary Hip Arthroscopy and Labral Reconstruction: A Propensity-Matched Controlled Study With Minimum 2-Year Follow-up.

BACKGROUND: There is a paucity of literature evaluating the effect of cigarette smoking on outcomes in patients undergoing hip arthroscopy and labral reconstruction. PURPOSE: (1) To report minimum 2-year patient-reported outcome (PRO) scores for patients who smoke cigarettes and underwent primary hip arthroscopic labral reconstruction and (2) to compare these results with those of a propensity-matched control group of patients who have never smoked. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were collected for all patients who underwent primary hip arthroscopy for labral reconstruction between January 2011 and January 2019. Patients were eligible for the study if they indicated that they smoked cigarettes within 1 month of surgery and had minimum 2-year postoperative outcome scores for the modified Harris Hip Score (mHHS), Nonarthritic Hip Score (NAHS), and the visual analog scale (VAS) for pain. The percentage of patients achieving the minimal clinically important difference (MCID) and patient-acceptable symptom state (PASS) was recorded. Rates of revision surgery were also documented. These patients were then propensity matched in a 1:3 ratio to patients who had never smoked (controls) for comparison. RESULTS: A total of 20 patients (20 hips) were included with a mean follow-up of 39.9 ± 13.0 months and mean age of 41.4 ± 10.4 years. These patients demonstrated significant improvement from preoperatively to the minimum 2-year follow-up for mHHS, NAHS, and VAS (P < .05). They also achieved MCID for mHHS and VAS at acceptable rates, 70% for both. When outcomes were compared with those of 60 control patients (60 hips), patients who smoke demonstrated lower preoperative PRO scores but similar minimum 2-year postoperative PRO scores for mHHS and NAHS. Patients who smoke demonstrated lower rates of achieving PASS for mHHS (55% vs 75%) and NAHS (40% vs 61.7%) compared with controls; however, these findings were not statistically significant. Rates of secondary surgery were statistically significantly higher in the smoking group compared with controls (25% vs 5%; P = .031). Survivorship for the smoking patients was 80% and 98.3% for the control group. At the two-year mark survivorship was 90% for the smoking group and 100% for the control group (P = .06). CONCLUSION: While smokers can still derive significant improvement from hip arthroscopy, their ultimate functional outcome and rate of secondary surgeries are inferior to those of nonsmokers. As smoking is a significant and modifiable risk factor, we should continue to counsel smokers on smoking cessation prior to and after surgery.

Workers' Compensation Patients Improved After Hip Arthroscopy for Labral Tears: A 5-Year Outcome Propensity Score-Matched Study.

BACKGROUND: The workers' compensation (WC) status has been associated with inferior outcomes in orthopaedic procedures and is usually excluded from clinical outcome studies. Therefore, comparative studies based on WC status are scarce. PURPOSE: (1) To determine outcomes of patients with WC claims treated with hip arthroscopy for labral tears at a minimum 5-year follow-up and (2) to compare these findings with a propensity score-matched control group without WC claims. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Patients were propensity score matched to a control group without WC claims. Data were prospectively collected for all patients undergoing hip arthroscopy. Patients were included if they received primary hip arthroscopy for labral tears in the setting of femoroacetabular impingement, had a WC claim, and had preoperative and minimum 5-year follow-up patient-reported outcomes ([PROs]; modified Harris Hip Score [mHHS], Non-Arthritic Hip Score [NAHS], Hip Outcome Score-Sports Specific Subscale [HOS-SSS], and visual analog scale [VAS] for pain). Clinical outcomes were measured using the Patient Acceptable Symptom State (PASS), minimal clinically important difference (MCID), and maximum outcome improvement satisfaction threshold (MOI). RESULTS: A total of 111 from 132 (84.1%) eligible WC patients met the inclusion criteria with an average follow-up time of 80.3 ± 37.3 months. WC cases demonstrated significant improvement from preoperatively to a minimum 5-year follow-up for mHHS, NAHS, HOS-SSS, and VAS for pain (P < .05). WC patients returned to work at a 66% rate, with an average clearance time of 4.7 months to light duty and 9.5 months to heavy duty. When compared with the control group, the WC group demonstrated lower pre- and postoperative PROs (P < .05); however, WC cases had a greater magnitude of improvement (ΔmHHS [P = .0012], ΔNAHS [P < .001], and ΔHOS-SSS [P = .012]). Rates of achieving MCID and MOI were similar in both groups (P > .05). The WC group went on to receive a future arthroscopy in 19 cases (17.1%), while 10 cases (4.5%) in the control group required revision arthroscopy (P < .001). Patients in both the WC and the control groups converted to total hip arthroplasty at similar rates (13.3% and 15.4%, respectively; P > .05). CONCLUSION: Patients with WC claims treated with hip arthroscopic surgery showed significant improvement and high rates of returning to work at a minimum 5-year follow-up. Although having lower scores in PROs and achieving PASS rates, no differences were found in MCID and MOI rates. Furthermore, WC patients had a greater magnitude of improvement from preoperatively to a minimum 5-year follow-up after hip arthroscopy. Therefore, even though more studies are needed to determine the causes of inconsistent outcomes in the WC population, hip arthroscopy can effectively treat labral tears in the setting of femoroacetabular impingement, regardless of the WC status.

The Fragility Index of Total Hip Arthroplasty Randomized Control Trials: A Systematic Review.

INTRODUCTION: Although randomized controlled trials (RCTs) are considered the benchmark study design, a change of outcomes for a few patients can lead to a reversal of study conclusions. As such, examination of the fragility index (FI) of RCTs has become an increasingly popular method to provide further information regarding the relative robustness of RCT results. The purpose of this study was to systematically characterize and assess the predictors of the FI RCTs in total hip arthroplasty literature. METHODS: PubMed/MEDLINE, Embase, and Cochrane were systematically searched for all total hip arthroplasty RCTs published between January 2015 and December 2020, which had an equal assignment of participants to a two parallel-arm study design, examined a surgical intervention, and reported on at least one statistically significant dichotomous outcome in the abstract. Potential factors associated with the FI were examined using the Spearman correlation and Mann-Whitney U test. RESULTS: Thirty-four RCTs were selected, with a median number of study participants of 111 (interquartile range [IQR] 72-171] and a median total number of events of 15 (IQR 9.5 to 29). The median FI was 2 (IQR 1 to 6), while six studies had a FI of 0. In 18 cases (52.9%), the number of patients needed to change from no event to event was less than that loss to follow-up. Larger sample size was found to predictive of a higher FI (rs = 0.367, P = 0.033), but the year of publication, journal impact factor, the calculated power analysis size, and loss to follow-up were not associated with FI. CONCLUSION: The FI serves as a useful addition to other more commonly used approaches of quantitative analyses, such as P values, effect sizes, and confidence intervals, and widespread reporting the FI may provide clinicians with further information about RCT results. LEVEL OF EVIDENCE: Level I, systematic review of Level I studies.

Females and Males Achieved Comparable Outcomes and Clinical Benefits Following Primary Hip Arthroscopy with Labral Repair, but Age Affected Outcomes and Conversion to Total Hip Arthroplasty. A Short and Mid-Term Follow-Up Analysis with Dual Stratification.

PURPOSE: To report and compare, according to sex and age, minimum 2-and minimum 5-year patient-reported outcome scores (PROs) and survivorship in a large cohort of patients who underwent primary hip arthroscopy for femoroacetabular impingement syndrome (FAIS). METHODS: Data from February 2008 to September 2018 were reviewed. Patients aged 60 and younger who underwent primary hip arthroscopy with minimum 2-year follow-up were included. Exclusion criteria were Tönnis grade >1, hip dysplasia, previous hip conditions, or any labral treatment different than repair. Minimum 5-year PROs were also collected. All patients included were divided into groups by sex. For further analysis, males and females were stratified according to age: < 21 years old, 21-30 years old, 31-40 years old, 41-50 years old, and 51-60 years old. RESULTS: In total, 1,326 hips had minimum 2-year follow-up, including 860 (64.9%) females and 466 males (35.1%), with a mean age of 31.6 years (range, 12.8-60.9 years) and a mean follow-up of 58.7 ± 28.9 months. Of those, 772 had minimum 5-year follow-up, 515 females (66.7%), and 257 males (33.3%) with a mean age of 31.7 years (range, 13.1-60.7 years) and a mean follow-up of 78.5 ± 23.0 months. All patients showed significant improvements in PROs at minimum 2-and 5-year follow-up (P < .001). Between sex analysis revealed comparable PROs at latest follow-up between females and males across any age group. Within sexes, and when sexes were combined, patients <21 years old had significantly better outcomes compared to other age groups. There were more females <21 years old that required revision arthroscopy than males <21 years old (P = .015). Conversion to total hip arthroplasty (THA) showed no significant difference between sexes (P > .05). Rates of THA were <21 years (.8%), 21-30 years (2.1%), 31-40 years (4%), 41-50 years (8.9%), and 51-60 years (14.3%). CONCLUSIONS: Following primary hip arthroscopy for FAIS, all patients reported significant improvements in all PROs at minimum 2-and minimum 5-year follow-up, with females and males achieving similar success. Age affected outcomes, with patients under 21 years old reporting better scores regardless of sex. Although the conversion rate to THA was similar between the sexes, it was lower in the younger ages groups in both sexes. LEVEL OF EVIDENCE: III, retrospective comparative observation trial.

After Revision Hip Arthroscopy, Patients Having Either Circumferential or Segmental Labral Reconstructions for the Management of Irreparable Labra Show Clinical Improvement Based on Proper Indications.

PURPOSE: To compare a minimum of two-year follow-up patient-reported outcome scores (PROs) in patients who underwent revision hip arthroscopy for acetabular circumferential labral reconstruction (CLR) and segmental labral reconstruction (SLR) using propensity-matched groups, in the setting of irreparable labral tear. METHODS: Prospectively collected data were retrospectively reviewed for patients who underwent revision hip arthroscopy from April 2010 to September 2018. Patients were included if they underwent labral reconstruction and had preoperative and minimum 2-year PROs. Patients unwilling to participate, with Tönnis grade >1, or hip dysplasia were excluded. Patients in the CLR group were propensity-matched on the basis of age, sex, body mass index, and Tönnis grade to patients in the SLR group in a 1:1 ratio. The minimal clinically important difference (MCID) and the patient-acceptable symptomatic state (PASS) rates were calculated. RESULTS: Twenty-six hips (25 patients) with CLR were propensity-matched to 26 hips (26 patients) with SRL. The mean follow-up time 25.92 and 27.78 months for the CLR and SLR, respectively (P = .845). Groups reported comparable findings for sex (P = .773), age (P = .197), body mass index (P = .124), preoperative Tönnis grade (P = .124), lateral-center edge angle (P = .144), and alpha angle (P = .264), and comparable improvement for all PROs at minimum 2-year follow-up. Patient satisfaction was similar (P = .612). Rates of achievement for the MCID and PASS were comparable. CONCLUSION: Following revision hip arthroscopy, patients who underwent CLR or SLR for complete and segmental irreparable labral tears, respectively, reported significant and comparable postoperative improvement for all PROs and rate of achievement for the MCID and PASS at a minimum 2-year follow-up. LEVEL OF EVIDENCE: III, retrospective comparative therapeutic trial.

Arthroscopic Subspine Decompression Is Commonly Reported in a Heterogenous Patient Population With Concomitant Procedures: A Systematic Review.

PURPOSE: To systematically review the evaluation, management, and surgical outcomes of arthroscopic subspine decompression in conjunction with other intra-articular hip preservation procedures. METHODS: Two databases (PubMed and Embase) were searched from 2010 to 2021, in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, for articles investigating arthroscopic subspine decompression using the key words: "subspine impingement", "AIIS impingement", and "extra-articular impingement." Exclusion criteria included diagnostic studies, failure to report postoperative outcomes, and case series of less than 10 hips. Studies were assessed for patient demographics, diagnostic criteria, clinical findings, concomitant procedures, outcomes, and postoperative complications. The quality of the studies was analyzed by 2 independent reviewers (A.J.C. and A.E.J.) using the Methodological Index for Non-randomized Studies (MINORS). RESULTS: Ten studies consisting of 438 patients (460 hips, 48.6% female) met the inclusion criteria, with average ages and follow-up ranging from 24.9 to 34.7 years and 6.0 to 44.4 months, respectively. There was 1 Level II study, 3 Level III studies, and 6 Level IV studies. The MINORS criteria yielded an average quality assessment of 13.0 (range: 7-22), with 3 methodological domains demonstrating mean scores of less than 1: unbiased assessment of the study endpoint (.25), loss of follow up less than 5% (.25), and prospective calculation of the study size (.7). The most common exam maneuver used was the subspine impingement test (9 studies). Most subspine decompressions were performed in addition to traditional femoroacetabular impingement syndrome (FAIS) procedures, with only one study (33 hips) reporting solely on isolated subspine osteoplasty. Average preoperative and postoperative modified Harris Hip Score (mHHS) values ranged from 44.93 to 75.7 and 79.5 to 98.0, respectively. Three studies noted improved hip flexion in the postoperative period. Five surgical complications were reported. CONCLUSIONS: Arthroscopic subspine decompression is commonly reported in a heterogenous patient population with intra-articular hip pathology. A combination of the subspine impingement test and anterior inferior iliac spine (AIIS) morphology on imaging is frequently used for diagnosis. While improved patient-reported outcomes (PROs) are consistently observed following arthroscopic decompression, conclusions are limited by study methodology and concurrent procedures performed at the time of surgery. LEVEL OF EVIDENCE: IV, systematic review of Level II through Level IV studies.

Low Body Mass Index in Females May Portend Inferior Outcomes After Primary Hip Arthroscopy: A Propensity-Matched Analysis With Minimum 2-Year Follow-up.

BACKGROUND: There is a paucity of literature evaluating the effect of low body mass index (BMI) in female patients undergoing primary hip arthroscopy. PURPOSE: (1) To report minimum 2-year patient-reported outcome scores for female patients with low BMI who underwent primary hip arthroscopy for femoroacetabular impingement syndrome and (2) to compare these results with a propensity-matched control group of female patients with normal BMI. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were collected on all female patients who had low BMI (<18.5) and underwent primary hip arthroscopy between April 2008 and January 2019. Patients were excluded if they had a previous hip arthroscopy; had workers' compensation; were unwilling to participate in the study; or had Tönnis osteoarthritis grade >1, acetabular dysplasia, or a previous hip condition. Minimum 2-year patient-reported outcomes were collected for the modified Harris Hip Score (mHHS), Non-Arthritic Hip Score, Hip Outcome Score-Sport Specific Subscale (HOS-SSS), visual analog scale for pain, and satisfaction. The percentage of patients achieving the minimal clinically important difference (MCID), Patient Acceptable Symptom State (PASS), and maximum outcome improvement satisfaction threshold (MOIST) was also recorded. These patients were propensity matched in a 1:2 ratio to female patients with normal BMI for comparison. RESULTS: A total of 43 patients (49 hips) were included with a mean ± SD follow-up of 26.9 ± 8.3 months, age of 24.1 ± 12.6 years, and BMI of 17.7 ± 0.67. These patients demonstrated significant improvement from presurgery to minimum 2-year follow-up for the mHHS, Non-Arthritic Hip Score, HOS-SSS, and visual analog scale (P < .05). When outcomes were compared with 93 control patients (97 hips), female patients with low BMI demonstrated lower rates of achieving the PASS for the mHHS (61.2% vs 77.3%; P = .041) and HOS-SSS (39.5% vs 57.1%; P = .031). Rates of achieving the MCID and MOIST were similar between the groups (P > .05). Female patients with low BMI also had higher rates of revision when compared with the control group, but this did not reach statistical significance (14.2% vs 7.2%; P = .171). CONCLUSION: Female patients with low BMI undergoing primary hip arthroscopy for femoroacetabular impingement syndrome demonstrated significant improvement in patient-reported outcomes at minimum 2-year follow-up. When compared with a propensity-matched control group with normal BMI, these patients demonstrated lower rates of achieving the PASS for the mHHS and HOS-SSS. Low BMI in females undergoing primary hip arthroscopy for FAIS may adversely affect outcomes at short-term follow-up.

High Body Mass Index Does Not Adversely Affect Outcomes in High-Level Athletes Undergoing Primary Hip Arthroscopy: A Propensity-Matched Comparison With Minimum 2-Year Follow-up.

BACKGROUND: The effect of high body mass index (BMI) on outcomes in athletes has not been established. PURPOSE: (1) To report minimum 2-year patient-reported outcome (PRO) scores and return to sports (RTS) for high-level athletes with high BMI undergoing hip arthroscopy for femoroacetabular impingement syndrome (FAIS) and (2) to compare results with a propensity-matched control group of high-level athletes with a normal BMI. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Data were collected on all professional, collegiate, and high school athletes who had a high BMI (>30) and who had undergone primary hip arthroscopy for FAIS between January 2010 and December 2018. RTS status and minimum 2-year PROs were collected for the modified Harris Hip Score (mHHS), Non-Arthritic Hip Score (NAHS), Hip Outcome Score-Sports Specific Subscale (HOS-SSS), and visual analog scale (VAS) for pain. The percentage of patients achieving the minimal clinically important difference (MCID) and Patient Acceptable Symptom State (PASS) were also recorded. These patients were propensity matched in a 1:3 ratio to high-level athletes with a normal BMI for comparison. RESULTS: A total of 30 high-level athletes with a high BMI were included with a mean follow-up of 49.4 ± 29.5 months. They demonstrated significant improvement from preoperatively to latest follow-up for mHHS, NAHS, HOS-SSS, and VAS (P < .001). When outcomes were compared with a propensity-matched control group of 90 athletes with a normal BMI, athletes with a high BMI had worse acetabular cartilage injury and were more likely to undergo acetabular microfracture (P < .001). Athletes with a high BMI demonstrated lower postoperative scores for NAHS when compared with athletes with a normal BMI (88.06 ± 9.37 [range, 60-100] and 90.25 ± 10.79 [range, 48.75-100], respectively; P = .049). Athletes with a high BMI also demonstrated worse postoperative scores for HOS-SSS when compared with athletes with a normal BMI (77.22 ± 18.31 [range, 22.22-100] and 82.38 ± 22.79 [range, 2.78-100], respectively; P = .038). Rates of achieving MCID for the high-BMI and normal-BMI groups were comparable in mHHS (90.0% and 77.8%, respectively; P = .185) and HOS-SSS (90.0% and 82.2%, respectively; P = .397). PASS rates were also comparable between the high- and normal-BMI groups for mHHS (90.0% and 87.8%, respectively; P > .999) and HOS-SSS (70.0% and 71.1%, respectively; P = .908). Athletes with a high BMI also returned to sports at a lower rate compared with athletes with a normal BMI, but this did not reach statistical significance (P = .479). CONCLUSION: Athletes with a high BMI undergoing primary hip arthroscopy for FAIS demonstrated significant improvement in PROs and favorable rates achieving clinically meaningful improvement. When compared with a control group of high-level athletes with a normal BMI, they exhibited similar rates of achieving psychometric thresholds and RTS rates. At short-term follow-up, high BMI did not adversely affect outcomes of high-level athletes undergoing primary hip arthroscopy.

High-Level Athletes Who Did Not Return to Sport for Reasons Unrelated to Their Hip Achieve Successful Midterm Outcomes With a Benchmarking Against High-Level Athletes Who Returned to Sport.

PURPOSE: 1) To report minimum 2- and 5-year outcomes of high-level athletes who did not return to sport (RTS) after hip arthroscopy for reasons unrelated to their hip (T athletes) and 2) to benchmark these findings against a propensity-matched control group of high-level athletes who returned to sport (RTS athletes). METHODS: Data were prospectively collected and retrospectively reviewed for professional, collegiate, and high school athletes between April 2008 and October 2015, who underwent primary hip arthroscopy. Athletes were considered eligible if they did not return to sport for reasons unrelated to their hip such as loss of interest, graduation, or a lifestyle transition (T athletes). Inclusion criteria were preoperative and minimum 5-year postoperative patient-reported outcomes (PROs) for the modified Harris Hip Score (mHHS), Non-Arthritic Hip Score (NAHS), Hip Outcome Score-Sports Specific Subscale (HOS-SSS), and the visual analog scale (VAS) for pain. Clinical outcomes were assessed using the minimal clinically important difference (MCID) and maximum outcome improvement satisfaction threshold (MOIST). T athletes were then propensity-matched to a control group of high-level athletes who returned to sport after hip arthroscopy (RTS athletes) for comparison. RESULTS: Twenty-seven T hips (25 patients) were included in the analysis with a mean follow-up time of 38.9 ± 16.8 and 72.1 ± 16.8 months for minimum 2- and 5-year outcomes, respectively. They demonstrated significant improvement in all measured PROs. When compared to a propensity-matched control group of RTS athletes, T athletes demonstrated similar improvement in PROs (mHHS, NAHS, and HOS-SSS) and achieved MCID at similar rates for NAHS (T: 77.8% vs RTS: 68.8%; P = .570) and HOS-SSS (T: 70.3% vs RTS: 76.6%, P = .824) compared to RTS athletes; however T athletes demonstrated higher rates of achieving MCID for mHHS (T: 88.9% vs RTS: 72.9% P = .033). CONCLUSION: Athletes who did not return to sport for reasons unrelated to their hip demonstrated favorable outcomes at minimum 2- and 5-year follow-up. They had similar PROs and rates of achieving MCID for HOS-SSS compared to a propensity-matched control group of high-level athletes who returned to sport. Return to sport status may not necessarily be correlated to the patient's perception of their own outcome. LEVEL OF EVIDENCE: III, retrospective cohort study.

Patients Obtain Meaningful Clinical Benefit After Hip Arthroscopy Despite Preoperative Psychological Distress: A Propensity-Matched Analysis of Mid-Term Outcomes.

PURPOSE: To evaluate the influence of baseline psychological distress on patient-reported outcomes (PROs) after arthroscopic hip surgery for femoroacetabular impingement at a minimum of 5 years. METHODS: Demographic and intraoperative data were prospectively collected from patients who underwent primary arthroscopic hip surgery for femoroacetabular impingement and labral tears after failure of conservative management between June 2012 and December 2014. Included patients had preoperative and minimum 5-year postoperative PROs and visual analog scale scores for pain and satisfaction. The 12-item Short Form Health Survey (SF-12) Mental Component Summary (MCS) score was used to stratify patients into 2 cohorts: Patients with an average or above-average score (SF-12 MCS score ≥ 50) were considered psychologically non-distressed, whereas those who scored below average (SF-12 MCS score < 50) were considered to have psychological distress. Distressed patients were propensity matched by age, sex, and body mass index to an equal number of non-distressed patients. RESULTS: Of the 153 hips that met the inclusion criteria, 117 (76.5%) had minimum 5-year follow-up. Eighty-two hips were included in the final analysis after propensity matching, with 41 in both the distressed and non-distressed cohorts. Preoperatively, patients in the distressed cohort reported inferior scores for all PROs. There was a significant difference in the SF-12 MCS score between groups at 2 years, but similar scores were observed for all other PROs. At minimum 5-year follow-up, there were no differences between groups for any PRO. There were no differences in the rates of achieving the minimal clinically important difference for all PROs or in achieving the patient acceptable symptomatic state for the modified Harris Hip Score. CONCLUSIONS: Patients with baseline psychological distress may have a lower functional status at the time of presentation but still gain meaningful clinical benefit and pain improvement from arthroscopic hip surgery, with mid-term outcomes comparable to those obtained by patients without preoperative psychological distress. LEVEL OF EVIDENCE: Level III, retrospective comparative study.