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Shaker F, Soleimani M, Shafiei SH. Letter to the Editor on "Dislocation Following Anterior and Posterior Total Hip Arthroplasty in the Setting of Spinal Deformity and Stiffness: Evolving Trends Using a High-Risk Protocol at a Single Tertiary Center". J Arthroplasty 2024; 39:e35-e36. [PMID: 38642966 DOI: 10.1016/j.arth.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/06/2023] [Accepted: 01/07/2024] [Indexed: 04/22/2024] Open
Affiliation(s)
- Farhad Shaker
- Orthopedic Department, Orthopedic Surgery Research Center (OSRC), Sina University Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Soleimani
- Orthopedic Department, Orthopedic Surgery Research Center (OSRC), Sina University Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyyed Hossein Shafiei
- Orthopedic Department, Orthopedic Surgery Research Center (OSRC), Sina University Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Karasavvidis T, Pagan CA, Sharma AK, Jerabek SA, Mayman DJ, Vigdorchik JM. Decreased Instability in High-Risk (Hip-Spine 2B) Patients After Modifications of Surgical Planning and Technique. J Arthroplasty 2024:S0883-5403(24)00366-8. [PMID: 38642849 DOI: 10.1016/j.arth.2024.04.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 04/08/2024] [Accepted: 04/12/2024] [Indexed: 04/22/2024] Open
Abstract
BACKGROUND Patients undergoing primary total hip arthroplasty (THA) who have spinal deformity and a stiff spine are the highest-risk group for instability. Despite the increasing use of dual-mobility cups and large femoral heads, dislocation remains a major complication after THA. Preoperative planning becomes a critical aspect of ensuring precise component positioning within a safe zone. The purpose of this study was to investigate dislocation rates over a 9-year period. METHODS A retrospective review of 4,731 THAs performed by 3 orthopaedic surgeons between January 2014 and March 2023 was performed. Spinopelvic measurements were conducted to determine the hip-spine classification group for each patient. Only patients classified as 2B (pelvic incidence-lumbar lordosis > 10° and Δsacral slope < 10°) were eligible. Both absolute and relative dislocation frequencies were then analyzed using time-series analysis techniques and Fisher's exact tests. RESULTS A total of 281 hip-spine 2B patients undergoing primary THA were eligible for analysis (57% women; mean age, range: 66 years, 23 to 87; mean body mass index, range: 28, 16 to 45). The overall dislocation rate was 4.3%. Use of femoral head sizes ≥ 40 mm increased from 4% in 2014 to 2019 to 37% in 2020 to 2023 (P < .001), while the use of dual-mobility cups decreased from 100% in 2014 to 2019 to 37% in 2020 to 2023 (P < .001). Acetabular component planning was changed from the supine plane to the standing plane in February 2020. Those changes in surgical practice were notably correlated with a significant decrease in dislocation rates from 6.8% in 2014 to 2019 to 1.5% in 2020 to 2023 (P = .03). CONCLUSIONS Our study demonstrates that the introduction of advanced preoperative THA planning to the standing plane, coupled with precise intraoperative technology for implant placement, can significantly reduce the risk of instability in high-risk THA patients. Notably, we observed a significant decrease in dislocation rates, which aligned with the shift in surgical practice. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Theofilos Karasavvidis
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Cale A Pagan
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Abhinav K Sharma
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York; Department of Orthopaedic Surgery, University of California, Irvine, Orange, California
| | - Seth A Jerabek
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - David J Mayman
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
| | - Jonathan M Vigdorchik
- Adult Reconstruction and Joint Replacement Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York
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Streck LE, Chiu YF, Haralambiev L, Boettner F. The Surgical Approach Impacts Component Selection in Total Hip Arthroplasty: A Matched Cohort Study of 7,460 Hips. J Arthroplasty 2024; 39:739-743. [PMID: 37633508 DOI: 10.1016/j.arth.2023.08.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/17/2023] [Accepted: 08/19/2023] [Indexed: 08/28/2023] Open
Abstract
BACKGROUND A higher risk of dislocation following total hip arthroplasty (THA) has been reported for the posterior approach (PA) compared to the anterior approach (AA). Dual mobility implants, larger head sizes, and elevated or face-changing liners can reduce the risk for dislocation. It remains unclear whether the component selection is influenced by the surgical approach. METHODS This is a retrospective study of 7,048 patients who underwent 7,460 primary THA with either AA or PA for primary hip osteoarthritis or osteonecrosis of the femoral head between 2019 and 2021. A propensity score model based on age, body mass index, height, and American Association of Anesthesiologists Score was applied. There were 2,502 AA-THA matched with 4,958 PA-THA (2,456 1:2, and 46 1:1). Groups were compared with multiple linear regression analyses/multivariate logistic regressions after controlling for American Association of Anesthesiologists Score and body mass index. In a second step, only hips operated by surgeons using both approaches were matched 1:1 (1,204 PA and AA, respectively). The same statistics were performed after controlling for "surgeon". RESULTS The PA was associated with a more frequent use of dual mobility implants, elevated liners, face-changing liners, as well as heads with 36 mm or larger diameters, and the implanted cups were significantly larger (P < .001, respectively). These findings were consistent for both matched cohorts. CONCLUSION The surgical approach impacts the component selection in THA. Patients undergoing PA-THA are more likely to receive implants with larger head size or stabilizing features compared to AA-THA.
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Affiliation(s)
- Laura E Streck
- Adult Reconstruction and Joint Replacement Department, Hospital for Special Surgery, New York, New York
| | - Yu-Fen Chiu
- Hospital for Special Surgery, Biostats Core, Research Administration, New York, New York
| | - Lyubomir Haralambiev
- Adult Reconstruction and Joint Replacement Department, Hospital for Special Surgery, New York, New York
| | - Friedrich Boettner
- Adult Reconstruction and Joint Replacement Department, Hospital for Special Surgery, New York, New York
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Park S, Yun JS, Bang DH, Jung Y, Kwack KS, Kim JT. Deviation of Latitude Cut: A Simple Sign to Differentiate Total Hip Arthroplasty from Hemiarthroplasty in Radiography. J Clin Med 2023; 12:6218. [PMID: 37834862 PMCID: PMC10573713 DOI: 10.3390/jcm12196218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
This study aims to propose latitude cut deviation for differentiating hip arthroplasty types and evaluate its diagnostic utility in distinguishing total hip arthroplasty (THA) from hemiarthroplasty using radiography. After assessing various cup designs from top manufacturers for THA and hemiarthroplasty, we conducted a retrospective study on 40 patients (20 THA and 20 hemiarthroplasty). Three readers independently evaluated the radiographs, assessing acetabular sparing, cup-bone interface texture, and latitude cut deviation. Diagnostic performance and inter-observer agreement were compared using receiver operating characteristic curves and the Fleiss kappa coefficient. Latitude cut deviation measured on implant designs ranged from 19% to 42% in hemiarthroplasty and from -12% to 9% in THA. The sensitivity, specificity, and accuracy used to distinguish THA from hemiarthroplasty were 60-85%, 55-95%, and 62.5-77.5% for acetabular sparing; 100%, 50-80%, and 75-90% for cup-bone interface texture; and 100%, 90-100%, and 95-100% for latitude cut deviation. Inter-observer agreement for acetabular sparing, cup-bone interface texture, and latitude cut deviation ranged from moderate to excellent (κ = 0.499, 0.772, and 0.900, respectively). The latitude cut deviation exhibited excellent diagnostic performance and inter-reader agreement in distinguishing hemiarthroplasty from THA on radiographs, offering a concise way to identify hip arthroplasty type.
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Affiliation(s)
- Sunghoon Park
- Department of Radiology, Ajou University School of Medicine, Ajou Medical Center, Suwon 16499, Republic of Korea
- Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon 16499, Republic of Korea
| | - Jae Sung Yun
- Department of Radiology, Ajou University School of Medicine, Ajou Medical Center, Suwon 16499, Republic of Korea
- Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon 16499, Republic of Korea
| | - Dong-Ho Bang
- Department of Radiology, Hankook General Hospital, Cheongju 63183, Republic of Korea
| | - Yongjun Jung
- Department of Radiology, Ajou University School of Medicine, Ajou Medical Center, Suwon 16499, Republic of Korea
| | - Kyu-Sung Kwack
- Department of Radiology, Ajou University School of Medicine, Ajou Medical Center, Suwon 16499, Republic of Korea
- Musculoskeletal Imaging Laboratory, Ajou University Medical Center, Suwon 16499, Republic of Korea
| | - Jung-Taek Kim
- Department of Orthopaedic Surgery, Ajou University School of Medicine, Ajou Medical Center, Suwon 16499, Republic of Korea
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Krull P, Steinbrück A, Grimberg AW, Melsheimer O, Morlock MM, Perka C. [Standard and special liner in primary hip arthroplasty : Current study and survey results from the German Arthroplasty Registry (EPRD)]. ORTHOPADIE (HEIDELBERG, GERMANY) 2023; 52:222-232. [PMID: 36635446 DOI: 10.1007/s00132-022-04333-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/25/2022] [Indexed: 01/13/2023]
Abstract
BACKGROUND Instability constitutes the main reason for revision hip arthroplasties. Modified polyethylene liners are designed to improve the stability of a hip replacement. In July 2022 The Bone & Joint Journal published a study with data of the German Arthroplasty Registry (EPRD). The study investigated mechanical failure of standard and modified liner designs in primary, cementless total hip arthroplasty. Following the study, the EPRD conducted a survey of German clinics to research the utilization of lipped liners in primary total hip replacement. METHODS The liner study included 151,096 primary, elective, cementless total hip arthroplasties. Data from November 2012 to November 2020 were obtained from the EPRD. Standard polyethylene liners were compared with lipped, angulated, offset and angulated/offset inlays. Cumulative incidences for endpoint revision due to mechanical complication were calculated with a competing risk analysis. The influence of other variables was investigated with a multivariate Cox regression. In the following online survey, 237 out of 789 hospitals completed a form. RESULTS AND CONCLUSION In our analysis, only offset liners were, compared to standard liners, associated with a reduced risk of mechanical failure in a short to medium follow up. However, the resultant joint reaction force is increased with offset liners due to the lateralization of the hip center of rotation. Thus, the long-term performance of offset liners needs to be observed. Our survey indicated that lipped liners were implanted more often if the posterior approach was used. Moreover, lipped liners were mostly positioned with the elevated rim in the biomechanically less optimal posterior-superior quadrant. To improve stability it is suggested to position the elevated rim in the posterior-inferior quadrant.
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Affiliation(s)
- Paula Krull
- Endoprothesenregister Deutschland (EPRD gGmbH), Str. des 17. Juni 106-108, 10623, Berlin, Deutschland. .,Centrum für Muskuloskeletale Chirurgie (CMSC), Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland.
| | - Arnd Steinbrück
- Endoprothesenregister Deutschland (EPRD gGmbH), Str. des 17. Juni 106-108, 10623, Berlin, Deutschland.,Orthopädisch Chirurgisches Kompetenzzentrum Augsburg (OCKA), Vinzenz-von-Paul-Platz 1, 86152, Augsburg, Deutschland
| | - Alexander W Grimberg
- Endoprothesenregister Deutschland (EPRD gGmbH), Str. des 17. Juni 106-108, 10623, Berlin, Deutschland
| | - Oliver Melsheimer
- Endoprothesenregister Deutschland (EPRD gGmbH), Str. des 17. Juni 106-108, 10623, Berlin, Deutschland
| | - Michael M Morlock
- Technische Universität Hamburg (TUHH), Am Schwarzenberg-Campus 1, 21073, Hamburg, Deutschland
| | - Carsten Perka
- Centrum für Muskuloskeletale Chirurgie (CMSC), Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117, Berlin, Deutschland
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Pitz-Gonçalves LI, Deckard ER, Meneghini RM. Large Femoral Heads and Select Dual-Mobility Bearings Are Associated With Reduced Instability in Contemporary Posterior Approach Total Hip Arthroplasty. J Arthroplasty 2023:S0883-5403(23)00119-5. [PMID: 36791889 DOI: 10.1016/j.arth.2023.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/31/2023] [Accepted: 02/04/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Postoperative dislocation is considered the main drawback of posterior approach total hip arthroplasty (THA). Thinner highly cross-linked polyethylene and dual-mobility bearings allow maximizing femoral head diameter per a given cup size. This study evaluated dislocation rates as large femoral head bearings were introduced into a practice over an 11-year period. METHODS A total of 1,511 consecutive primary THAs were retrospectively reviewed. Demographics, implant sizes, femoral head-acetabular cup ratio, and dislocation status were collected from the electronic medical record. Data were evaluated using time series analysis techniques as larger femoral heads, thinner polyethylene liners, and dual-mobility bearings were introduced. The cohort was 57% women with mean age and body mass index of 62 years (range, 13 to 93) and 31 kg/m2 (range, 13 to 54), respectively. RESULTS The overall dislocation rate was 0.98%. Use of femoral head sizes ≥ 40 millimeters increased from 4% in the years 2010 to 2016 to 51% in the years 2017 to 2021, correlating with a 50% reduction in dislocation rate from 1.4% to 0.7% (P = .279). Also, no dislocations occurred in patients who had dual-mobility bearings or ≥ 40-millimeter femoral heads (P = .007). Twelve of 14 dislocations occurred in cases with head-cup ratio < 0.7 (P = .013). Thirteen of 14 dislocations were in women (P = .005). CONCLUSION Maximizing the femoral head diameter per given cup size correlated with a decrease in dislocation rate in modern posterior approach THA. Furthermore, these results suggest that dual-mobility articulations should be reserved for high-risk patients or patients in whom a 40-millimeter femoral head is not possible. LEVEL OF EVIDENCE IV-consecutive case series; no control group.
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Affiliation(s)
- Lauren I Pitz-Gonçalves
- Department of Orthopaedic Surgery and Rehabilitation Services, The University of Chicago, Chicago, Illinois
| | - Evan R Deckard
- Indiana Joint Replacement Institute, Indianapolis, Indiana
| | - R Michael Meneghini
- Indiana Joint Replacement Institute, Indianapolis, Indiana; Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, Indiana
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Blumenfeld TJ. How Prescient Can We Be?: Commentary on an article by Cody C. Wyles, MD, et. al.: "Creation of a Total Hip Arthroplasty Patient-Specific Dislocation Risk Calculator". J Bone Joint Surg Am 2022; 104:1129. [PMID: 36149245 DOI: 10.2106/jbjs.22.00384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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