Cementless metal-on-metal hip arthroplasty in patients less than 50 years of age*1Comparison with a matched control group using ceramic-on-polyethylene after a minimum 5-year follow-up

2004 ◽  
Vol 19 (8) ◽  
pp. 23-28 ◽  
Author(s):  
H MIGAUD ◽  
A JOBIN ◽  
C CHANTELOT ◽  
F GIRAUD ◽  
P LAFFARGUE ◽  
...  
Keyword(s):  
Hip Arthroplasty ◽  
Matched Control ◽  
Control Group ◽  
Matched Control Group ◽  
Metal On Metal

Revision Hip Arthroscopy in the Borderline Dysplastic Population: Reporting Outcomes With Minimum 2-Year Follow-up, With a Subanalysis Against a Propensity-Matched Nondysplastic Control Group

2020 ◽  
Vol 49 (1) ◽  
pp. 66-75 ◽  
Author(s):  
David R. Maldonado ◽  
Cynthia Kyin ◽  
Jacob Shapira ◽  
Philip J. Rosinsky ◽  
Mitchell B. Meghpara ◽  
...  
Keyword(s):  
Revision Surgery ◽  
Hip Arthroscopy ◽  
Matched Control ◽  
Arthroscopic Surgery ◽  
Harris Hip Score ◽  
Control Group ◽  
Study Group ◽  
Matched Control Group ◽  
Patient Reported

Background: Hip arthroscopy in patients with borderline dysplasia continues to be surrounded by controversy. Even more controversial is the management of the failed hip arthroscopy in this population. There is a paucity of studies in contemporary literature regarding outcomes after arthroscopic revision surgery. Purpose: (1) To report minimum 2-year patient-reported outcome (PRO) scores in patients with borderline dysplasia who underwent revision hip arthroscopy and (2) to compare these PRO scores with those of a propensity-matched control group without dysplasia who underwent revision hip arthroscopy. Study Design: Cohort study; Level of evidence, 3. Methods: Data were prospectively collected between August 2009 and November 2017. Inclusion criteria were revision arthroscopic surgery, capsular plication, and baseline and minimum 2-year follow-up for the following PROs: modified Harris Hip Score (mHHS), Nonarthritic Hip Score (NAHS), Hip Outcome Score–Sports Specific Subscale (HOS-SSS), and visual analog scale (VAS) for pain. Patients with Tönnis grade >1 or previous hip conditions were excluded. Two groups were created: a study group with borderline dysplasia (lateral center-edge angle [LCEA], 18°-25°) and a control group without dysplasia (LCEA, 25°-40°). Groups were propensity-matched in a 1:3 ratio for sex, age, body mass index, and follow-up time. Results: A total of 22 revision borderline dysplastic hips (21 patients) had a minimum 2-year follow-up during the study period. Patients in this group reported significant improvements for all PROs from baseline and achieved the minimal clinically important difference (MCID) for the mHHS at a rate of 70%. Moreover, 21 borderline dysplastic hips (21 patients) were matched to 63 control hips (63 patients). Mean LCEA for the study and control groups was 22.6 ± 1.7 and 32.0 ± 5.0, respectively. Both groups reported similar improvement in all PROs. The rate for achieving the MCID for the mHHS and VAS was similar between groups; however, the control group had higher rates of meeting the MCID for the HOS-SSS and NAHS ( P = .042 and P = .025, respectively). The rates of conversion to hip arthroplasty were 7.9% (n = 5) in the control group and 23.8% (n = 5) in the borderline dysplasia propensity-matched group ( P = .052). The rate of re-revision arthroscopy was 11.1% (n = 7) in the control group and 19.0% (n = 4) on the borderline dysplasia group ( P = .350). Conclusion: After revision hip arthroscopy, significant improvement was obtained for all PROs in patients with borderline dysplasia at a minimum 2-year follow-up. Moreover, outcomes, patient satisfaction, the rate for achieving the MCID for the mHHS and VAS, and the rate for secondary surgery were similar to those of a propensity-matched control group without dysplasia. Nevertheless, there was a nonsignificant trend toward higher secondary procedures in the study group; therefore, arthroscopic revision surgery in the borderline patients should be approached with measured prognosis.

Schizoid personality in childhood: a controlled follow-up study

1980 ◽  
Vol 10 (1) ◽  
pp. 85-100 ◽  
Author(s):  
Sula Wolff ◽  
Jonathan Chick
Keyword(s):  
Child Psychiatry ◽  
Matched Control ◽  
Diagnostic Category ◽  
Operational Definition ◽  
Control Group ◽  
Matched Control Group ◽  
Follow Up Study ◽  
Schizoid Personality ◽  
Definition Of

SyonpsisTwenty-two boys with schizoid personality were followed-up some 10 years later and compared with a matched control group with other diagnoses who had been referred to the same child psychiatry department. The diagnostic category is shown to have predictive validity. A start has been made towards an operational definition of the syndrome.

Return to Sports and Minimum 2-Year Outcomes of Hip Arthroscopy in Elite Athletes With and Without Coexisting Low Back Pain: A Propensity-Matched Comparison

2021 ◽  
pp. 036354652110569
Author(s):  
Andrew E. Jimenez ◽  
Jade S. Owens ◽  
Peter F. Monahan ◽  
David R. Maldonado ◽  
Benjamin R. Saks ◽  
...  
Keyword(s):  
Back Pain ◽  
Hip Arthroscopy ◽  
Matched Control ◽  
Elite Athletes ◽  
Control Group ◽  
Return To Sports ◽  
Low Back ◽  
Inclusion Criteria ◽  
Matched Control Group

Background: Patient-reported outcomes (PROs) and return to sports (RTS) after hip arthroscopy for femoroacetabular impingement syndrome (FAIS) have not been established in elite athletes with coexisting low back pain (LBP). Purpose: (1) To report minimum 2-year PROs and RTS rates after primary hip arthroscopy for FAIS in elite athletes with coexisting LBP and (2) to compare clinical results with a propensity-matched control group of elite athletes without back pain. Study Design: Cohort study; Level of evidence, 3. Methods: Data were reviewed for elite athletes (college and professional) who underwent hip arthroscopy for FAIS and had coexisting LBP between October 2009 and October 2018. Inclusion criteria were preoperative and minimum 2-year follow-up for the modified Harris Hip Score, Nonarthritic Hip Score, Hip Outcome Score–Sports Specific Subscale (HOS-SSS), and visual analog scale for pain. Exclusion criteria were Tönnis grade >1, hip dysplasia (lateral center-edge angle <18°), and previous ipsilateral hip or spine surgery or conditions. Rates of achieving the minimal clinically importance difference (MCID), patient acceptable symptomatic state (PASS), and maximum outcome improvement satisfaction threshold were recorded in addition to RTS. For the subanalysis, the elite athlete study group was propensity matched to an elite athlete control group without back pain. Results: A total of 48 elite athletes with LBP who underwent primary hip arthroscopy met inclusion criteria, and follow-up was available for 42 (87.5%) at 53.2 ± 31.6 months (mean ± SD). Elite athletes with coexisting LBP demonstrated significant improvements in all recorded PROs and achieved the MCID and PASS for the HOS-SSS at rates of 82.5% and 67.5%, respectively. They also returned to sports at a high rate (75.8%), and 79% of them did not report LBP postoperatively. PROs, rates of achieving the MCID and PASS for the HOS-SSS, and RTS rates were similar between the study group and propensity-matched control group. Conclusion: Elite athletes with coexisting LBP who undergo primary hip arthroscopy for FAIS may expect favorable PROs, rates of achieving the MCID and PASS for the HOS-SSS, and RTS rates at minimum 2-year follow-up. These results were comparable to those of a propensity-matched control group of elite athletes without back pain. In athletes with hip-spine syndrome, successful treatment of their hip pathology may help resolve their back pain.

Revision Hip Arthroscopy in High-Level Athletes: Minimum 2-Year Outcomes Comparison to a Propensity-Matched Primary Hip Arthroscopy Control Group

2021 ◽  
pp. 036354652110417
Author(s):  
Peter F. Monahan ◽  
Andrew E. Jimenez ◽  
Jade S. Owens ◽  
Benjamin R. Saks ◽  
David R. Maldonado ◽  
...  
Keyword(s):  
Revision Surgery ◽  
Hip Arthroscopy ◽  
Matched Control ◽  
Return To Sport ◽  
Harris Hip Score ◽  
Control Group ◽  
Matched Control Group ◽  
Functional Scores ◽  
High Level

Background: Outcomes of revision hip arthroscopy in the athletic population have not been well established. Purpose: (1) To report clinical outcomes for high-level athletes undergoing revision hip arthroscopy in the setting of femoroacetabular impingement syndrome (FAIS) or labral tears and (2) to compare these outcomes against a propensity-matched group of high-level athletes undergoing primary hip arthroscopy. Study Design: Cohort study; Level of evidence, 3. Methods: Data for professional, college, and high school athletes were prospectively collected and retrospectively reviewed between January 2012 and October 2018. Patients were included if they underwent revision or primary hip arthroscopy and had preoperative and minimum 2-year patient-reported outcome (PRO) scores for 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 findings and outcomes of revision athletes were compared with a propensity-matched control group of high-level athletes undergoing primary hip arthroscopy. Results: A total of 32 hips (29 patients) undergoing revision hip arthroscopy and 92 hips (88 patients) undergoing primary hip arthroscopy were included in our final analysis with a median follow-up time of 29.5 months (95% CI, 27.2-32.1 months) and 36.5 months (95% CI, 33.5-37.7 months), respectively. Athletes undergoing revision surgery showed significant improvement in all recorded PRO measurements and achieved patient acceptable symptomatic state (PASS) and minimal clinically important difference (MCID) for mHHS at high rates (80.6% and 83.9%, respectively). When compared with a propensity-matched primary control group, patients undergoing revision surgery demonstrated lower preoperative and postoperative scores for mHHS, NAHS, and HOS-SSS, but the magnitude of improvement in functional scores was similar between groups. Athletes undergoing revision surgery achieved PASS for HOS-SSS at lower rates than the control group ( P = .005), and they were less likely to attempt to return to sport compared with the control group (62.5% vs 87.0%; P < .01). Conclusion: Revision hip arthroscopy is a viable treatment option to improve PROs in high-level athletes at minimum 2-year follow-up. The study group showed significant improvement in functional scores and a high rate of successful outcomes. They experienced similar magnitude of improvement as that of a propensity-matched control group; however, they achieved lower postoperative PRO scores and attempted to return to sport at lower rates.

scholarly journals Serum cobalt concentrations remain at low levels at a minimum of 20 years following metal-on-metal total hip arthroplasty

2020 ◽  
Vol 9 (3) ◽  
pp. 146-151 ◽  
Author(s):  
Wenzel Waldstein ◽  
Ulrich Koller ◽  
Bernhard Springer ◽  
Paul Kolbitsch ◽  
Wolfram Brodner ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Harris Hip Score ◽  
Controlled Study ◽  
Control Group ◽  
Total Hip ◽  
Metal On Metal ◽  
Low Levels ◽  
Serum Cobalt

Aims Second-generation metal-on-metal (MoM) articulations in total hip arthroplasty (THA) were introduced in order to reduce wear-related complications. The current study reports on the serum cobalt levels and the clinical outcome at a minimum of 20 years following THA with a MoM (Metasul) or a ceramic-on-polyethylene (CoP) bearing. Methods The present study provides an update of a previously published prospective randomized controlled study, evaluating the serum cobalt levels of a consecutive cohort of 100 patients following THA with a MoM or a CoP articulation. A total of 31 patients were available for clinical and radiological follow-up examination. After exclusion of 11 patients because of other cobalt-containing implants, 20 patients (MoM (n = 11); CoP (n = 9)) with a mean age of 69 years (42 to 97) were analyzed. Serum cobalt levels were compared to serum cobalt levels five years out of surgery. Results The median cobalt concentration in the MoM group was 1.04 μg/l (interquartile range (IQR) 0.64 to 1.70) at a mean of 21 years (20 to 24) postoperatively and these values were similar (p = 0.799) to cobalt levels at five years. In the CoP control group, the median cobalt levels were below the detection limit (< 0.3 μg/l; median 0.15 μg/l, IQR 0.15 to 0.75) at 20 years. The mean Harris Hip Score was 91.4 points (61 to 100) in the MoM group and 92.8 points (63 to 100) in the CoP group. Conclusion This study represents the longest follow-up series evaluating the serum cobalt levels after 28 mm head MoM bearing THA and shows that serum cobalt concentrations remain at low levels at a mean of 21 years (20 to 24) after implantation. Cite this article: Bone Joint Res. 2020;9(3):145–150.

A Ten-Year Follow-Up of Men Discharged from Grendon Prison

1987 ◽  
Vol 151 (5) ◽  
pp. 674-678 ◽  
Author(s):  
Graham Robertson ◽  
John Gunn
Keyword(s):  
Matched Control ◽  
Control Group ◽  
Criminal Behaviour ◽  
Case Histories ◽  
Criminal Records ◽  
Post Discharge ◽  
Matched Control Group

A ten-year follow-up on the criminal records of men discharged from Grendon Prison was carried out. These records were compared with those of a matched control group, and no differences were found regarding frequency or severity of post-discharge convictions. The validity of this exercise is questioned, and several case histories presented. An examination of subsequent offending within the Grendon group suggests that for some men, the better motivated and more intelligent, exposure to the Grendon regime may have contributed to a change in their criminal behaviour.

Hips With Acetabular Retroversion Can Be Safely Treated With Advanced Arthroscopic Techniques Without Anteverting Periacetabular Osteotomy: Midterm Outcomes With Propensity-Matched Control Group

2020 ◽  
Vol 48 (7) ◽  
pp. 1636-1646 ◽  
Author(s):  
David R. Maldonado ◽  
Jeffery W. Chen ◽  
Cynthia Kyin ◽  
Philip J. Rosinsky ◽  
Jacob Shapira ◽  
...  
Keyword(s):  
Hip Arthroscopy ◽  
Matched Control ◽  
Periacetabular Osteotomy ◽  
Acetabular Retroversion ◽  
Harris Hip Score ◽  
Control Group ◽  
Matched Control Group ◽  
Labral Tears ◽  
Patient Reported

Background: Different options, from reverse (anteverting) periacetabular osteotomy to hip arthroscopy, have been proposed for surgical treatment of femoroacetabular impingement syndrome (FAIS) in the setting of acetabular retroversion. Purpose: (1) To report and analyze midterm patient-reported outcome scores (PROs) in patients with FAIS and labral tears in the setting of acetabular retroversion after isolated hip arthroscopy and (2) to compare these PROs with those of a propensity-matched control group without acetabular retroversion. Study Design: Cohort study; Level of evidence, 3. Methods: Prospectively collected data were retrospectively reviewed for patients who underwent hip arthroscopy for FAIS and labral tear treatment between June 2008 and March 2014. Inclusion criteria were as follows: acetabular retroversion, pre- and postoperative PROs for modified Harris Hip Score (mHHS), Non-arthritic Hip Score, Hip Outcome Score–Sports Specific Scale (HOS-SSS), and visual analog scale (VAS). Propensity score matching was utilized to identify a control group without acetabular retroversion matched 1:1 with similar age, sex, body mass index, acetabular and femoral head Outerbridge grade, preoperative lateral center-edge angle, and labral treatment. Patient acceptable symptomatic state (PASS) and/or minimal clinically important difference (MCID) for the mHHS, HOS-SSS, International Hip Outcome Tool–12, and VAS was calculated. Results: A total of 205 hips with acetabular retroversion were matched to a control group. The groups showed no difference in demographic variables. The retroversion group was composed of 139 female and 66 male hips, with a mean ± SD age of 23.81 ± 7.28 years and follow-up time of 65.24 ± 20.31 months. Intraoperative diagnostic data and procedures performed were similar between groups, except more femoroplasties were performed in the retroversion group. Significant improvements for the mHHS, Non-arthritic Hip Score, HOS-SSS, and VAS were seen for both groups at a mean 5-year follow-up. The proportion of patients who reached the PASS and MCID were similar. Conclusion: In the setting of FAIS and labral tears, patients with acetabular retroversion can be safely treated with advanced hip arthroscopic techniques without reverse (anteverting) periacetabular osteotomy in a high-volume surgeon’s hands. Patients with acetabular retroversion demonstrated favorable PROs at midterm follow-up. Furthermore, the proportion of patients reaching the MCID and PASS for several PROs were comparable with those of a propensity-matched control group without acetabular retroversion.

scholarly journals Emergent coronary angiography in a 90-plus population – outcomes at 5-years follow-up

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
R Alves Pinto ◽  
T Proenca ◽  
M Martins Carvalho ◽  
S Torres ◽  
C X Resende ◽  
...  
Keyword(s):  
Coronary Angiography ◽  
Matched Control ◽  
Left Ventricular ◽  
Multivessel Disease ◽  
Control Group ◽  
Old Patients ◽  
Very Old ◽  
Matched Control Group ◽  
Very Old Patients

Abstract Introduction Elderly people represents a vulnerable and increasing population presenting with acute coronary syndrome (ACS). Several data suggest the benefit of an early revascularization in ST-elevation (STE)-ACS or non-STE-ACS with positive troponin. However questions persist considering the unavoidable adverse prognosis, patient's functional and cognitive status, comorbidities and preferences. Purpose To evaluate a group of very old patients who underwent emergent coronary angiography (CA). Methods We retrospectively analyzed a group of very old patients (≥90 year-old) who underwent emergent CA from January 2008 to September 2020. Clinical features were collected; survival and MACE were compared with an aged-matched control population with ACS not submitted to emergent CA. MACE was defined as a composite of all-cause death, ischemic stroke, ACS or hospitalization for acute heart failure. Results A total of 34 patients were enrolled: 56% female, with mean age 92±2 year-old. As for the cardiovascular risk factors, 88% had hypertension, 49% dyslipidaemia, 12% diabetes and 15% were previous smokers. Concerning other comorbidities, 27% had atrial fibrillation, 21% chronic kidney disease, 12% had cerebrovascular disease and median modified Rankin scale for neurologic disability was 2. Almost all patients had STE-ACS, 68% anterior and 29% inferior, inferolateral or inferoposterior infarction; 3% had infarction of indeterminate location. In CA, 65% had multivessel disease, 14% of them involving left main coronary artery; coronary intervention was performed in 71% of patients (mostly stent implantation), the remaining 29% had no invasive treatment. Concerning to clinical status, median troponin was 131 517 ng/L and median BNP 496 pg/mL; 36% of patients evolved in Killip class III or IV and only 32% of patients had normal left ventricular systolic function. Regarding mortality, 38% of patients died in the index-event versus 25% in the aged-matched control group (p=0.319). During five years of follow-up, there was no significant difference in mortality between the two groups (Log Rank, p=0.403) and more than 50% of patients died in two years. Comparing MACE occurrence, both groups were similar (Log Rank, p=0,662), with more than 80% having at least one event in five years. Conclusion Very old patients submitted to emergent CA had a high percentage of multivessel disease, left ventricular dysfunction and mortality during hospitalization. Compared to an aged-matched control group, they showed no survival or MACE benefit of emergent CA strategy during a five-years follow-up. Although this is a small study, these findings highlight the efforts that should be made to optimize care in this vulnerable population, under-represented in the clinical trials. Special caution should be given to avoid possible unnecessary discomfort in this setting. FUNDunding Acknowledgement Type of funding sources: None. MACE analysis

Reactions of Police Officers to Body-Handling after a Major Disaster a Before-and-After Comparison

1991 ◽  
Vol 159 (4) ◽  
pp. 547-555 ◽  
Author(s):  
David A. Alexander ◽  
Andrew Wells
Keyword(s):  
Police Officers ◽  
Matched Control ◽  
Psychiatric Morbidity ◽  
Control Group ◽  
Matched Control Group ◽  
Major Disaster ◽  
Before And After ◽  
Post Traumatic ◽  
Traumatic Distress

This study reports the results of an unusual opportunity to follow up a group of police officers who were involved in body-handling duties following the Piper Alpha disaster, and for whom there were available data from pre-disaster assessments. In addition, after these duties, the officers were compared with a matched control group of officers who had not been involved in such work. The comparisons failed to demonstrate high levels of post-traumatic distress or psychiatric morbidity. The results are interpreted in terms of issues such as the officers' own coping strategies, and major organisational and managerial factors.

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