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Kenanidis E, Kakoulidis P, Anagnostis P, Potoupnis M, Tsiridis E. Constrained liners revisited: favourable mid-term results in patients with high-risk of dislocation: technical considerations for the optimal outcome. Hip Int 2023; 33:53-61. [PMID: 33896259 DOI: 10.1177/11207000211010712] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The outcomes of constrained liners (CLs) in total hip arthroplasty (THA) remain inconclusive. We evaluated the mid-term performance of CLs in a consecutive series of high-risk dislocation patients undergoing primary or revision THA performed by a single surgeon. The survival, dislocation rate, complications, and functional patients' scores were assessed. Surgical tips to enhance outcomes were reviewed. METHODS 45 patients who received the Trident Tripolar CL between 2010 to 2019 were retrospectively evaluated from Arthroplasty Registry Thessaloniki. There were 17 primary and 28 revision THAs. The primary indications for using CL were severe abductor insufficiency or comorbidities, increasing the dislocation risk in primary, and recurrent dislocation or abductor insufficiency in revision THAs. The mean patient's age was 68.5 (±14.5) years, and the mean follow-up 3.81 (±1.66) years. RESULTS There were 2 dislocations and 1 deep infection in the revision group. For any reason, the cumulative 6-year survival rate was 93.3%, 100% for primary, and 89.3% for revision THAs. The mean overall CL survival was 76.3 months for any reason (95% CI, 68.1-84.5) and 80.5 months for dislocation (95% CI, 75.8-85.2). The mean postoperative functional scores were significantly improved (p < 0.001) at the latest follow-up. CONCLUSIONS CLs can provide hip stability and durable fixation in selected low-demand patients with high-risk for dislocation after primary and revision THA at mid-term follow-up. Careful patient selection and the refined surgical technique aiming at the neutral liner position and considering the high CLs' offset relative to stem-neck impingement are necessary to maximise outcomes.
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Affiliation(s)
- Eustathios Kenanidis
- Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece.,Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece
| | - Panagiotis Kakoulidis
- Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece.,Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece
| | - Panagiotis Anagnostis
- Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece.,Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece
| | - Michael Potoupnis
- Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece.,Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece
| | - Eleftherios Tsiridis
- Academic Orthopaedic Department, Aristotle University Medical School, General Hospital Papageorgiou, Thessaloniki, Greece.,Centre of Orthopaedic and Regenerative Medicine (CORE), Center for Interdisciplinary Research and Innovation (CIRI)-Aristotle University of Thessaloniki (AUTH), Thessaloniki, Greece
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A Meta-Analysis of the Incidence and Temporal Trends of Postoperative Dislocation in Revision Total Hip Arthroplasty Utilizing Constrained Acetabular Components or Dual Mobility Implants. J Arthroplasty 2022; 38:957-969.e1. [PMID: 36481281 DOI: 10.1016/j.arth.2022.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/07/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The incidence of dislocation after revision total hip arthroplasty (rTHA) is reported to be up to 25% and remains a common source of failure. Constrained acetabular components and dual mobility implants are two implant classes being utilized to alleviate this burden in patients who have recurrent instability or major intraoperative instability. This meta-analysis evaluated the incidence and temporal trends of dislocation after implantation with constrained acetabular components and dual mobility implants in rTHA. METHODS Longitudinal studies reporting dislocation after the use of constrained acetabular components or dual mobility implants in rTHA were sought from Medline and Embase to October 2022. Secondary outcomes included re-revision surgery for dislocation and all causes. A total of 75 relevant citations were identified comprising 36 datasets of 3,784 constrained acetabular components and 47 datasets of 10,216 dual mobility implants. RESULTS For constrained acetabular components, the pooled incidence of dislocation was 9% (95% confidence interval: 7.2, 11.7) (range 0.0%-35.3%) over a weighted mean follow-up of 6 years, in contrast to 3% (95% confidence interval: 2.2, 4.4) (range 0.0%-21.4%) over 5 years for dual mobility implants. Re-revision rates for dislocation after using constrained acetabular components were around 9%, in contrast to 2% for dual mobility implants. Re-revision rates for all causes after using constrained acetabular components were around 19%, in contrast to 8% for dual mobility implants. CONCLUSION Dual mobility implants in the context of rTHA demonstrate lower incidences of dislocation (3% versus 9%), re-revision for dislocation (2% versus 9%), and rer-evision for any cause (8% versus 19%) in contrast to constrained acetabular components. This must be considered by surgeons when implanting such devices, often selected to treat instability.
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Warschawski Y, Morgan S, Garceau SP, Kuzyk PR, Safir OA, Gross AE. Does Revision of an Acetabular Shell With Insertion of an Uncemented Constrained Liner Confer Benefit Over Cementing Into a Well-Ingrown Shell? J Arthroplasty 2022; 37:1631-1635. [PMID: 35358646 DOI: 10.1016/j.arth.2022.03.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/13/2022] [Accepted: 03/18/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND During revision total hip arthroplasty (THA), a constrained acetabular liner (CAL) may be inserted to enhance hip stability. It is unclear, however, whether cementation of a CAL into a retained cup offers an advantage compared to revision of the acetabular cup and insertion of an uncemented CAL. The purpose of our study was to compare outcomes and survivorship between the 2 methods. METHODS We identified a total of 177 patients who underwent revision THA with a specific CAL at our center between July 2004 and May 2019 (114 cup revisions and insertion of an uncemented CAL, 63 cementations of a CAL into a retained cup). Kaplan-Meier (KM) survival analysis was performed for implant survival free from aseptic failure of the CAL for both cohorts. RESULTS The average follow-up time was 7.2 and 7.02 years for the cemented and uncemented cohort, respectively (P = .55). Five patients (7.93%) in the cemented CAL group experienced failure of the CAL, whereas 10 patients (8.77%) in the uncemented CAL cohort experienced failure (P = .21). Kaplan-Meier (KM) survival analysis demonstrated comparable survivorship at 10 years (P = .055). CONCLUSION The results of our study suggest comparable survivorship between cementing a CAL into a retained cup and inserting an uncemented CAL in a revised acetabular cup. As a result of these findings along with the benefits associated with cementing a CAL, we encourage surgeons to readily consider this option in the management of recurrent instability.
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Affiliation(s)
- Yaniv Warschawski
- Division of Orthopedics, Affiliated to the Sackler Faculty of Medicine, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - Samuel Morgan
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Simon P Garceau
- Department of Orthopedic, The Ottawa Hospital - General Campus, Ottawa, Canada
| | - Paul R Kuzyk
- Mount Sinai Hospital, Division of Orthopaedics, Joseph and Wolf Lebovic Health Complex, Toronto, ON, Canada
| | - Oleg A Safir
- Mount Sinai Hospital, Division of Orthopaedics, Joseph and Wolf Lebovic Health Complex, Toronto, ON, Canada
| | - Allan E Gross
- Mount Sinai Hospital, Division of Orthopaedics, Joseph and Wolf Lebovic Health Complex, Toronto, ON, Canada
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Tripolar Constrained and Dual Mobility Liners Are Both Successful When Cemented Into Tantalum Acetabular Revision Shells in Complex Revision Total Hip Arthroplasty. Arthroplast Today 2022; 14:53-58. [PMID: 35242957 PMCID: PMC8881686 DOI: 10.1016/j.artd.2021.12.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 12/19/2021] [Accepted: 12/30/2021] [Indexed: 12/04/2022] Open
Abstract
Background Instability is a common complication after revision total hip arthroplasty. Tripolar constrained (TC) and dual mobility (DM) liners cemented into tantalum acetabular revision (TM) shells are established alternatives that reduce instability risk. This study compares outcomes of TC and DM liners cemented into TM shells in complex revision hip replacements. Methods Fifty cases using a TM shell and a TC or DM cemented liner with at least 12 months of follow-up were identified. There were 25 TC and 25 DM liners. Clinical, radiographic, and patient-reported outcomes were collected. Reasons for re-revision and failures were analyzed. Results The average age was 73 years in the TC group and 75 years in the DM group. The median follow-up duration was 50 months (23 - 96) and 13 months (12 – 21) for the TC and DM groups, respectively. The mean Harris Hip Score improved from 37 to 61 for the TC group and from 51 to 73 in the DM group at the last review. Two TC cases required revision for wear and liner failure. One DM insert was changed at reoperation for periprosthetic femur fracture. There were no failures of cement fixation in either group and no revisions for cup loosening. Conclusions In complex revision hip replacement with a history of instability or judged to have a high risk of instability postoperatively, TC and DM liners cemented into tantalum revision shells are both successful, giving acceptable results. The improved arc of movement with DM liners, minimizing impingement, makes them preferable except when there is a global abductor deficiency or severe joint laxity.
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Sculco PK, Wright T, Malahias MA, Gu A, Bostrom M, Haddad F, Jerabek S, Bolognesi M, Fehring T, Gonzalez DellaValle A, Jiranek W, Walter W, Paprosky W, Garbuz D, Sculco T, Abdel M, Boettner F, Benazzo F, Buttaro M, Choi D, Engh CA, Garcia-Cimbrelo E, Garcia-Rey E, Gehrke T, Griffin WL, Hansen E, Hozack WJ, Jones S, Lee GC, Lipman J, Manktelow A, McLaren AC, Nelissen R, O’Hara L, Perka C, Sporer S. The Diagnosis and Treatment of Acetabular Bone Loss in Revision Hip Arthroplasty: An International Consensus Symposium. HSS J 2022; 18:8-41. [PMID: 35082557 PMCID: PMC8753540 DOI: 10.1177/15563316211034850] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/07/2021] [Accepted: 07/07/2021] [Indexed: 11/21/2022]
Abstract
Despite growing evidence supporting the evaluation, classification, and treatment of acetabular bone loss in revision hip replacement, advancements have not been systematically incorporated into a single document, and therefore, a comprehensive review of the treatment of severe acetabular bone loss is needed. The Stavros Niarchos Foundation Complex Joint Reconstruction Center at Hospital for Special Surgery held an Acetabular Bone Loss Symposium on June 21, 2019, to answer the following questions: What are the trends, emerging technologies, and areas of future research related to the evaluation and management of acetabular bone loss in revision hip replacement? What constitutes the optimal workup and management strategies for acetabular bone loss? The 36 international experts convened were divided into groups, each assigned to discuss 1 of 4 topics: (1) preoperative planning and postoperative assessment; (2) implant selection, management of osteolysis, and management of massive bone loss; (3) the treatment challenges of pelvic discontinuity, periprosthetic joint infection, instability, and poor bone biology; and (4) the principles of reconstruction and classification of acetabular bone loss. Each group came to consensus, when possible, based on an extensive literature review. This document provides an overview of these 4 areas, the consensus each group arrived at, and directions for future research.
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Affiliation(s)
- Peter K. Sculco
- Hospital for Special Surgery, New York, NY, USA,Peter K. Sculco, MD, Hospital for Special Surgery, 535 E. 70th St., New York, NY 10021, USA.
| | | | | | - Alexander Gu
- George Washington University School of Medicine & Health Sciences, Washington, DC, USA
| | | | - Fares Haddad
- University College London Hospitals NHS Foundation Trust and Institute of Sport, Exercise & Health, London, UK
| | | | | | | | | | | | - William Walter
- Royal North Shore Hospital, St. Leonards, NSW, Australia
| | - Wayne Paprosky
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Donald Garbuz
- Department of Orthopaedics, The University of British Columbia, Vancouver, BC, Canada
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Mancino F, Jones CW, Sculco TP, Sculco PK, Maccauro G, De Martino I. Survivorship and Clinical Outcomes of Constrained Acetabular Liners in Primary and Revision Total Hip Arthroplasty: A Systematic Review. J Arthroplasty 2021; 36:3028-3041. [PMID: 34030877 DOI: 10.1016/j.arth.2021.04.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 04/08/2021] [Accepted: 04/23/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Several studies have evaluated the survivorship and clinical outcomes of constrained acetabular liners (CALs) in complex primary and revision total hip arthroplasty with hip instability; however, there remains no consensus on the overall performance of this constrained implant. We therefore performed a systematic review of the literature to examine survivorship and complication rate of CAL usage. METHODS A systematic review of the literature in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines was performed. A comprehensive search of PubMed, MEDLINE, EMBASE, and the Cochrane Database of Systematic Reviews was conducted for English articles using various combinations of keywords. RESULTS In all, 37 articles met the inclusion criteria. A total of 4152 CALs were implanted. The all-cause reoperation-free survivorship was 79.9%. The overall complication rate was 22.2%. Dislocation was the most common complications observed and the most frequent reason for reoperation with an incidence of 9.4% and 9.2%, respectively. Infection after CAL placement had an incidence of 4.6%. The reoperation rate for aseptic acetabular component loosening was 2.9%. Overall, patients had improved outcomes as documented by postoperative hip scores. CONCLUSION CALs usage have a relatively high complication rate, particularly when compared with current bearing alternatives (dual mobility cups and large diameter femoral heads), however, it remains a valuable salvage procedure in complex patients affected by recurrent dislocation and implant instability. Newer designs have shown reduced impingement and higher survivorship free from dislocation. However, CALs should only be used when the reasons of instability have been correctly recognized and optimized.
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Affiliation(s)
- Fabio Mancino
- Division of Orthopaedics and Traumatology, Department of Aging, Neurological, Orthopaedic and Head-Neck studies, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - Christopher W Jones
- Department of Orthopaedics, The Orthopaedic Research Foundation of Western Australia (ORFWA), Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Thomas P Sculco
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Stavros Niarchos Foundation Complex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY
| | - Peter K Sculco
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Stavros Niarchos Foundation Complex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY
| | - Giulio Maccauro
- Division of Orthopaedics and Traumatology, Department of Aging, Neurological, Orthopaedic and Head-Neck studies, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Università Cattolica del Sacro Cuore, Rome, Italy
| | - Ivan De Martino
- Division of Orthopaedics and Traumatology, Department of Aging, Neurological, Orthopaedic and Head-Neck studies, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy; Università Cattolica del Sacro Cuore, Rome, Italy; Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Stavros Niarchos Foundation Complex Joint Reconstruction Center, Hospital for Special Surgery, New York, NY
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Total Hip Arthroplasty in Patients With Postpolio Residual Paralysis: A Systematic Review. J Arthroplasty 2021; 36:2239-2247. [PMID: 33593623 DOI: 10.1016/j.arth.2021.01.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 12/25/2020] [Accepted: 01/18/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Patients with postpolio residual paralysis can develop disabling hip arthritis in paralytic as well as a nonparalytic limb, warranting total hip arthroplasty (THA). Limited literature is available on the results of THA among these patients in the form of small series or case reports. We have undertaken a systematic review to evaluate the clinical outcome of THA in patients with poliomyelitis with hip pathologies. METHODS A systematic search of electronic databases of PubMed, Scopus, and Web of Science pertaining to English literature was undertaken from 1945 to August 2020 to assess the results of THA in patients with poliomyelitis. Information was gathered about demographics, indication, clinical course, complications, functional outcome, survival, and need for any revision surgery in these patients. RESULTS The literature search revealed 81 articles. Finally, after deduplication and manual selection, 16 relevant articles (128 hips) were included for evaluation. There is a paucity of literature evaluating THA in patients with poliomyelitis over the last 2 decades. The principal reason for arthroplasty was osteoarthritis of the hip in the ipsilateral (paralyzed) limb. A combination of cemented, uncemented, and hybrid implant fixation system was found to be used by surgeons. Addressing instability and perioperative management of limb length discrepancy were found to be challenging propositions. CONCLUSION THA remains an effective intervention to relieve pain and improve quality of life in patients of poliomyelitis afflicted with either primary or secondary arthritis of the hip. The use of uncemented nonconstrained hip implant designs appears to demonstrate better results than constrained implants.
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Derksen A, Kluge M, Wirries N, Budde S, Schwarze M, Windhagen H, Floerkemeier T. Constrained tripolar liner in patients with high risk of dislocation - Analysis of incidence and risk of failure. J Orthop 2021; 25:288-294. [PMID: 34140757 DOI: 10.1016/j.jor.2021.05.021] [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: 02/25/2021] [Accepted: 05/08/2021] [Indexed: 11/19/2022] Open
Abstract
Introduction The aim of this study was to determine number and type of failures and revisions after usage of a constrained tripolar acetabular liner in patients with high risk of dislocation. Potential correlations between these failures and the factors included were analyzed. Materials and methods In this retrospective study 55 participants in 68 cases were included after treatment with constrained tripolar acetabular liner. Patient specific data as well as surgery and implant specific data were collected. Radiological images were assessed. Furthermore, the gluteal function was analyzed. The parameters were statistically verified with regard to their influence on the failure of the constrained tripolar liner. Results This study included 16 cases (in nine participants) of postoperative failure. This results in a survival rate of 76.5% regarding the number of cases after 17 months. The statistical analysis of the different parameters considered that the number of previous surgeries has a significant (p = 0.027) influence on the failure. Conclusions This retrospective study shows that treatment with constrained tripolar acetabular liners is a satisfactory method of treatment in cases with a high risk of dislocation. However, in cases with an increasing number of previous surgeries, an increased risk of failure was found. Therefore, in such cases, this type of supply treatment should be treated critically.
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Affiliation(s)
- A Derksen
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - M Kluge
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - N Wirries
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - S Budde
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - M Schwarze
- Laboratory for Biomechanics and Biomaterials, Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - H Windhagen
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
| | - T Floerkemeier
- Department of Orthopaedic Surgery at DIAKOVERE Annastift, Hannover Medical School, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany
- go:h - Gelenkchirurgie Orthopädie Hannover, Bertastr. 10, 30159, Hannover, Germany
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BinHussain H, Elzwai E, Fox S, Langhi S. Total hip replacement in patient with residual poliomyelitis with neglected femoral neck fracture. BMJ Case Rep 2021; 14:14/5/e240221. [PMID: 34020986 DOI: 10.1136/bcr-2020-240221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A 71-year-old man with residual poliomyelitis was referred to the orthopaedic surgeons with a neglected left femoral neck fracture of the paralytic limb. He had presented at another hospital with left groin pain and inability to weight bear 4 weeks earlier after a fall from standing height, but had delayed treatment due to his insistence on waiting until he returned to his home country.Successful treatment of residual poliomyelitis fractures requires early union as well as early mobilisation and rehabilitation. This patient presented to the orthopaedic surgeons with a challenging case due to the delay in treatment and the fact that the fracture was basicervical which results in an unstable fracture. Surgical expertise was required to decide on the optimum surgical option and a total hip arthroplasty was performed. The patient made a good recovery following physiotherapy as evidenced clinically and radiologically.
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Affiliation(s)
| | - Eman Elzwai
- Department of Surgery, Benghazi Medical Center, Benghazi, Benghazi, Libya
| | - Sarah Fox
- Alumna Homerton College, University of Cambridge, Cambridge, Cambridgeshire, UK
| | - Salem Langhi
- Orthopaedic, Benghazi Medical Center, Benghazi, Libya
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Bedard NA, Brown TS, Lewallen DG, Trousdale RT, Berry DJ, Abdel MP. Constrained Liners Implanted Simultaneously at the Time of Acetabular Shell Revision with a Highly Porous Implant: Surprisingly Good Fixation at 10 Years. J Bone Joint Surg Am 2020; 102:1521-1529. [PMID: 32453110 DOI: 10.2106/jbjs.19.01332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Many surgeons are reluctant to use a constrained liner at the time of acetabular component revision because of concerns that doing so might result in early acetabular component loosening related to high bone-implant interface stresses transmitted from the constrained liner. We hypothesized that, with appropriate initial implant stabilization using highly porous acetabular components with robust supplemental screw fixation, constrained liners could be safely used at the time of acetabular revision. METHODS We retrospectively identified 148 revision total hip arthroplasties (THAs) in which a constrained liner of 1 design was cemented into a newly placed highly porous acetabular component fixed with supplemental screws (mean, 5 screws). The mean age at the time of revision THA was 69 years, and 68% of the patients were female. The most common indications for revision were 2-stage reimplantation (33%), recurrent dislocation (30%), and aseptic loosening of the acetabular component (22%) or both the acetabular and femoral components (9%). The mean duration of follow-up was 7 years. RESULTS There were no failures at the bone-implant interface. No cases of acetabular metal shell loosening were identified on radiographic analysis. The 10-year survival rates with acetabular revision and any reoperation as the end points were 75% and 67%, respectively. Overall, 33 hips (22%) required revision or reoperation because of infection or wound complications (n = 12), dislocation or mechanical failure of the constrained liner (n = 11), periprosthetic femoral fracture (n = 4), femoral loosening (n = 3), or other reasons (n = 3). The 10-year survival rate with re-revision for instability as the end point was 88% overall, which was similar to the 85% 10-year survival rate with re-revision for instability as the end point among hips that were specifically revised because of instability during index revision THA (p = 0.9). CONCLUSIONS Implanting a constrained liner at the time of acetabular revision in high-risk patients resulted in no cases of aseptic metal acetabular component loosening in this large series. This finding is likely related to the fact that a highly porous acetabular component was utilized with robust supplemental screw fixation in each case. Such information is valuable as these data favor a paradigm shift when compared with some traditionally held tenets. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Crawford DA, Adams JB, Brown KW, Morris MJ, Berend KR, Lombardi AV. Mid-Term Survivorship of a Novel Constrained Acetabular Device. J Arthroplasty 2020; 35:859-863. [PMID: 31668696 DOI: 10.1016/j.arth.2019.09.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/29/2019] [Accepted: 09/30/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Recurrent instability after total hip arthroplasty is a difficult complication. In certain cases, a constrained acetabular device is needed to address these issues. The purpose of this study is to report the midterm outcomes and survivorship of a single novel constrained liner device. METHODS A retrospective review as performed on all procedures (except first stage exchange for infection) in which a Freedom Constrained (Zimmer Biomet, Warsaw, IN) liner was used between December 2003 and November 2016. Patients with 2-year minimum follow-up or failure were included, yielding a cohort of 177 patients. Procedures were 130 aseptic revisions, 40 reimplantations following infection eradication, and 7 complex primaries. The constrained mechanism was implanted in 46 hips (26%) to treat active instability and 131 hips (74%) for increased risk of instability and intraoperative instability. Patients had on average 3.4 previous surgeries. RESULTS With an average 7.1-year follow-up, 11 hips dislocated (6.2%), and 13 hips (7.3%) were revised for acetabular aseptic loosening, resulting in an overall constrained aseptic or mechanical failure rate of 13.6%. Nineteen hips (10.7%) failed from infection with 58% of these having had a previous infection. Patients with active instability had significantly higher failure for dislocation than patients who were at risk (15.2% vs 3%, P = .01). All-cause survival rate at 7 years was 74.8%, aseptic survival was 83.6%, and survival for instability was 91.8%. CONCLUSION Revision for instability remains challenging as many patients have had numerous previous surgeries and at-risk anatomy. Constrained inserts are one option to manage instability, but a high rate of recurrence can still occur.
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Affiliation(s)
| | | | | | - Michael J Morris
- Joint Implant Surgeons, Inc, New Albany, OH; Mount Carmel Health System, New Albany, OH
| | - Keith R Berend
- Joint Implant Surgeons, Inc, New Albany, OH; Mount Carmel Health System, New Albany, OH
| | - Adolph V Lombardi
- Joint Implant Surgeons, Inc, New Albany, OH; Mount Carmel Health System, New Albany, OH; Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH
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