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Ciais G, Massin V, Tibbo M, Dardenne T, Abdellaoui M, Ricón J, Antoni M, Laumonerie P. Stress shielding following radial head arthroplasty: the impact of preoperative bone quality. J Shoulder Elbow Surg 2024; 33:1665-1671. [PMID: 38697508 DOI: 10.1016/j.jse.2024.03.025] [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: 11/09/2023] [Revised: 02/21/2024] [Accepted: 03/03/2024] [Indexed: 05/05/2024]
Abstract
BACKGROUND We sought to assess if the medullary diameter to cortical width ratio (MD:CW), canal flair index (CFI), and canal fill (CF) of the proximal radius were associated with the presence of stress shielding (SS) after a MoPyC radial head arthroplasty. MATERIALS AND METHODS We conducted a retrospective, international, multicenter (4 centers) study. A total of 100 radial head arthroplasties in 64 women and 36 men with a mean age of 58.40 years ± 14.90 (range, 25.00-91.00) were included. Radiographic measurements, including MD:CW, CFI, CF, and postoperative SS were captured at a mean follow-up of 3.9 years ± 2.8 (range, 0.5-11). RESULTS SS was identified in 60 patients. Mean preoperative MD:CW, CFI, and CF were 0.55 ± 0.09, 1.05 ± 0.18, and 0.79 ± 0.11, respectively. The presence of SS was significantly associated with MD:CW (adjusted odds ratio = 13.66; P = .001), and expansion of the stem (adjusted odds ratio = 3.78; P = .001). The amount of the SS was significantly correlated with expansion of the stem (aβ 4.58; P < .001). CONCLUSIONS Our study found that MD:CW was an independent risk factor of SS after MoPyc radial head arthroplasty. Autoexpansion of the MoPyc stem significantly increased the risk of SS and its extent. Further studies involving multiple implants designs are needed to confirm the preliminary observations presented in the current study.
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Affiliation(s)
- Grégoire Ciais
- Department of Orthopedic Surgery, Clinique Jouvenet, Paris, France
| | - Valentin Massin
- Department of Orthopedic Surgery, La Timone Hospital, Marseille, France
| | - Meagan Tibbo
- Department of Orthopedic Surgery, Mayo Clinic, Phoenix, AZ, USA
| | - Theopol Dardenne
- Department of Orthopedic Surgery, Pellegrin Hospital, Bordeaux, France
| | | | - Javier Ricón
- Department of Orthopedic Surgery, Hopital Vega Baja de Orihuela, Calle Pais Valenciano, Orihuela, Alicante, Spain
| | - Maxime Antoni
- Department of Orthopedic Surgery, Clinique de l'orangerie, Strasbourg, France
| | - Pierre Laumonerie
- Department of Orthopedic Surgery, Pellegrin Hospital, Bordeaux, France.
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Ayuob A, Ur-Rahman Z, Jordan RW, D'Alessandro P, MacLean S, Malik SS. Pyrocarbon radial head arthroplasty offers satisfactory clinical and radiological outcomes with low revision rate: A systematic review. Orthop Traumatol Surg Res 2024; 110:103750. [PMID: 37949394 DOI: 10.1016/j.otsr.2023.103750] [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: 03/08/2023] [Revised: 09/16/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
INTRODUCTION Pyrocarbon promises to be an optimal material choice for radial head arthroplasty (RHA) due to an elastic modulus comparable to the radial diaphysis and thus providing higher biocompatibility. Primary objective was to determine the complications and revision rates related to the usage of these prostheses. The secondary objective was to assess the clinical and radiological outcomes of Pyrocarbon RHAs. HYPOTHESIS Pyrocarbon RHAs have good clinical and radiological outcomes with low complications and revisions. METHODS Ovid MEDLINE and Embase databases were used to search for studies on outcomes and complications of the RHAs using Pyrocarbon radial head prostheses. The systematic review was designed in accordance with the PRISMA guidelines and included studies were appraised using the MINORS tool. Complications and RHA revision rates were assessed. Functional outcomes were reviewed using PROMs (like MEPI, DASH and BMS), post-op range of motion (using goniometer) and grip strength (using the dynamometer). Postoperative radiological outcomes like peri-prosthetic lucency, radial neck osteolysis, radio-capitellar congruence, capitellar erosion, overstuffing/understuffing and osteoarthritis were reported using radiographs. RESULTS A total of 12 studies cumulatively reporting 353 patients who underwent Pyrocarbon RHAs were included in the review. The mean age of patients across the studies ranged from 47 to 54 years of which 50.5% were males. The majority of radial head replacements were done for acute trauma (87.5%) with the remainder done for arthritis (1.7%) and trauma sequelae (10.8%). Mean follow-up period in the selected studies ranged from 18 to 110 months with minimum follow-up across all studies being 12 months. Modular Pyrocarbon (MoPyC, Tornier™) was the implant of choice in ten studies while two studies used the Ascension Pyrocarbon radial head (Ascension Orthopaedics™). Ten studies demonstrated mean MEPI ranging from 75.5 to 96. Mean extension deficit ranged from 6 to 19 degrees, mean flexion from 120 to 140 degrees, mean pronation from 71 to 87 degrees and mean supination from 63 to 85 degrees. Relative grip strength ranged from 69 to 96% of the contralateral limb. Revisions due to implant-related reasons (intra-prosthetic dissociation, prosthetic fracture, peri-prosthetic loosening, radio-capitellar subluxation and understuffed/overstuffed elbow) was 6.8% (24/353). Radial stress shielding and peri-prosthetic lucency was reported in 10 to 100% of patients across different studies but symptomatic implant loosening leading to revision remained rare (2%, 7/353). Radio-capitellar congruence was reported in 81% to 100% cases while capitellar erosion ranged from 0% to 89%. Pyrocarbon implants specific complications included head-neck intra-prosthetic decoupling (1.1%) and pyrocarbon head fractures (0.9%). In total, 5.7% cases underwent re-surgery due to non-RHA related reasons. DISCUSSION The pyrocarbon RHA shows good functional outcome, range of motion and low revision rates. This aligns with the working hypothesis of this review. However, pyrocarbon radial head implants have implant-specific complications like pyrocarbon radial head fractures and intra-prosthetic decoupling between stem and head. Despite promising in vitro biomechanical properties, capitellar wear is still a common finding with pyrocarbon RHAs. Despite these factors, pyrocarbon radial head implants are a viable option for radial head arthroplasty. LEVEL OF EVIDENCE II; Systematic review.
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Affiliation(s)
- Atif Ayuob
- Worcestershire Acute Hospitals NHS Trust, Worcester, United Kingdom.
| | - Zain Ur-Rahman
- Worcestershire Acute Hospitals NHS Trust, Worcester, United Kingdom
| | - Robert W Jordan
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
| | - Peter D'Alessandro
- Orthopaedic Research Foundation of Western Australia, Perth, Australia; Medical School, University of Western Australia, Perth, Australia
| | | | - Shahbaz S Malik
- Worcestershire Acute Hospitals NHS Trust, Worcester, United Kingdom
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Klug A, Jakobi T, Schnetz M, Hagebusch P, Gramlich Y, Hoffmann R. Mid-term outcome following radial head arthroplasty in acute trauma: risk factors for poor outcome. J Shoulder Elbow Surg 2023; 32:2140-2151. [PMID: 37327986 DOI: 10.1016/j.jse.2023.05.012] [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: 02/09/2023] [Revised: 04/10/2023] [Accepted: 05/06/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The aims of this study were to evaluate the outcomes of a single type of radial head implant in a large cohort of patients at mid-term follow-up and to determine the associated risk factors for inferior functional outcomes. METHODS We performed a retrospective follow-up assessment of 65 patients (33 women and 32 men; mean age, 53.3 years [range, 22-81 years]) who underwent radial head arthroplasty (RHA) for acute trauma between 2012 and 2018, after a minimum follow-up period of 3 years. The Mayo Elbow Performance Score, Oxford Elbow Score, Disabilities of the Arm, Shoulder and Hand score, and Mayo Modified Wrist Score were evaluated, and all available radiographs were analyzed. All complications and revision procedures were assessed. Bivariate and multivariate regression analyses were performed to identify potential risk factors for a poor outcome following RHA. RESULTS After an average follow-up period of 4.1 years (range, 3-9.4 years), the mean Mayo Elbow Performance Score was 77.2 (standard deviation [SD], 18.9); mean Oxford Elbow Score, 32.0 (SD, 10.6); mean Mayo Modified Wrist Score, 74.6 (SD, 13.7); and mean Disabilities of the Arm, Shoulder and Hand score, 29.0 (SD, 21.2). Average range of motion measured 10° (SD, 15°) in extension, 125° (SD, 14°) in flexion, 81° (SD, 14°) in pronation, and 63° (SD, 24°) in supination. The overall complication and reoperation rates were 38.5% and 30.8%, respectively, with severe elbow stiffness being the most common reason for revision. Patient age >50 years, the use of an external fixator, the presence of accompanying medial collateral ligament injuries, and the development of higher-grade osteoarthritis were associated with a poor outcome. CONCLUSION Satisfactory medium-term outcomes can be achieved using a monopolar, long-stemmed RHA in patients with acute trauma. However, complication and revision rates are high, frequently leading to inferior outcome scores. Additionally, a higher patient age, the use of an external fixator, the presence of accompanying medial collateral ligament injuries, and the occurrence of higher-grade osteoarthritis were associated with a poor outcome; these factors should raise awareness by the treating trauma surgeon.
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Affiliation(s)
- Alexander Klug
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany.
| | - Tim Jakobi
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany
| | - Matthias Schnetz
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany
| | - Paul Hagebusch
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany
| | - Yves Gramlich
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany
| | - Reinhard Hoffmann
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Frankfurt am Main, Frankfurt am Main, Germany
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Abi-Rafeh J, ElHawary H, Azzi AJ, Thibaudeau S. Pyrocarbon Arthroplasty Implants in the Upper Extremity: A Systematic Review of Outcomes and Pooled Analysis of Complications. Plast Reconstr Surg 2021; 148:946e-958e. [PMID: 34847116 DOI: 10.1097/prs.0000000000008514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Growing use of pyrocarbon implants in upper extremity arthroplasty has culminated in a breadth of literature ascertaining outcomes and complications at long-term follow-up. However, at present, the literature remains devoid of studies synthesizing the available evidence for upper extremity surgeons to adequately assess the safety and utility of these implants relative to other available options. METHODS A systematic search of the National Library of Medicine, MEDLINE, and Embase databases was performed to determine clinical outcomes and complication and reoperation rates following pyrocarbon arthroplasties in the upper extremity. A breakdown of complication and reoperation rates for each independent joint (shoulder, elbow, wrist, and hand joints), and according to specific causes necessitating surgery, was also compiled. RESULTS A comprehensive summary of functional outcomes following upper extremity pyrocarbon arthroplasties is presented. Overall complication and reoperation rates in the hand and wrist were determined to be 28.2 percent and 17 percent, respectively. The proximal interphalangeal joint was associated with the highest complication rate (42.7 percent), followed by carpometacarpal joint (18.8 percent), metacarpophalangeal joint (17.6 percent), wrist (16 percent), elbow (15.7 percent), and shoulder (12.9 percent). In the hand and wrist, major complications included dislocations and subluxations (8.4 percent), stiffness and limited motion (4.4 percent), deformity (3.1 percent), hardware failure (1.9 percent), fractures (1.7 percent), persistent pain (1.7 percent), and infections (0.9 percent). CONCLUSION In the absence of large clinical trials, systematic reviews such as these can help inform clinical guidelines and provide practitioners with an evidence-based reference to improve informed consent.
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Affiliation(s)
- Jad Abi-Rafeh
- From the Faculty of Medicine, McGill University; and Division of Plastic and Reconstructive Surgery, Department of Surgery, McGill University Health Centre
| | - Hassan ElHawary
- From the Faculty of Medicine, McGill University; and Division of Plastic and Reconstructive Surgery, Department of Surgery, McGill University Health Centre
| | - Alain J Azzi
- From the Faculty of Medicine, McGill University; and Division of Plastic and Reconstructive Surgery, Department of Surgery, McGill University Health Centre
| | - Stephanie Thibaudeau
- From the Faculty of Medicine, McGill University; and Division of Plastic and Reconstructive Surgery, Department of Surgery, McGill University Health Centre
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Page RS, Paltoglou NG, Arora V, Eng K, Gill SD. Retrospective review of pyrocarbon radial head replacement. JSES REVIEWS, REPORTS, AND TECHNIQUES 2021; 1:376-380. [PMID: 37588705 PMCID: PMC10426669 DOI: 10.1016/j.xrrt.2021.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Background Radial head arthroplasty is the preferred surgical management for complex, unreconstructable radial head fractures. There has been increasing use of pyrocarbon prostheses, with potential tribology and modulus advantages over metallic counterparts. This study aims to assess clinical and radiological outcomes for radial head replacement after trauma using a modular, uncemented pyrocarbon prosthesis. Materials and Methods Between September 2009 and March 2020, a consecutive series of 22 trauma cases were available for review. Patients underwent radial head arthroplasty using a pyrocarbon prosthesis (Ascension Modular Radial Head System, Austin, TX). Recorded outcomes included clinical assessment, radiological evaluation, and patient-reported outcome measures specific to elbow function. Results Twenty-two patients (7 male, 15 female) with an average age of 51 years (range 21-64) were analyzed with a minimum 12 months of follow-up. All patients had complex radial head fractures, categorized as a Mason 3 or 4 injury. At follow-up, mean elbow range of motion included flexion 130° (range 100°-150°), extension 19° (0-50°), pronation 73° (30°-90°), and supination 70° (10°-90°). The mean Mayo Elbow Performance Index score was 83 (55-100), and Disabilities of the Arm, Shoulder and Hand score was 22 (2.5-60). Radiological evaluation showed 14 patients with asymptomatic proximal neck resorption and two patients with radiological stem loosening. In total, 3 of 22 implants were revised-2 were excised, and 1 revised to a long stem for traumatic implant fracture. Conclusion Pyrocarbon radial head arthroplasty provided reliable functional results for patients after unreconstructable radial head fracture. The unique potential for fracture of the prosthesis should be considered in long-term follow-up, with appropriate activity advice to patients.
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Affiliation(s)
- Richard S. Page
- Barwon Centre for Orthopaedic Research and Education (B-CORE), University Hospital Geelong, Geelong, VIC, Australia
- St. John of God Hospital Geelong, Geelong, VIC, Australia
| | - Nicholas G. Paltoglou
- Barwon Centre for Orthopaedic Research and Education (B-CORE), University Hospital Geelong, Geelong, VIC, Australia
- St. John of God Hospital Geelong, Geelong, VIC, Australia
| | - Varun Arora
- Barwon Centre for Orthopaedic Research and Education (B-CORE), University Hospital Geelong, Geelong, VIC, Australia
- St. John of God Hospital Geelong, Geelong, VIC, Australia
| | - Kevin Eng
- Barwon Centre for Orthopaedic Research and Education (B-CORE), University Hospital Geelong, Geelong, VIC, Australia
- St. John of God Hospital Geelong, Geelong, VIC, Australia
| | - Stephen D. Gill
- Barwon Centre for Orthopaedic Research and Education (B-CORE), University Hospital Geelong, Geelong, VIC, Australia
- St. John of God Hospital Geelong, Geelong, VIC, Australia
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Wegmann K, Knowles N, Lalone E, Müller LP, Athwal GS, King GJW. Computed Tomography Analysis of the Radial Notch of the Ulna. J Hand Surg Am 2019; 44:794.e1-794.e8. [PMID: 30502012 DOI: 10.1016/j.jhsa.2018.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 08/19/2018] [Accepted: 10/09/2018] [Indexed: 02/02/2023]
Abstract
PURPOSE The anatomy of the radial head and capitellum has been extensively studied; however, the anatomy of the radial notch of the ulna (RNU) has received little attention. This imaging-based anatomic study characterizes the morphology of the RNU. METHODS Ninety-eight cadaveric arms (57 male, 72 ± 14 y) were imaged with computed tomography, and 3-dimensional reconstructions of the proximal ulna were constructed. The anteroposterior and proximal-distal dimensions of the RNU as well as the radius of curvature at standardized levels were measured in 2-mm increments. The orientation of the RNU was also determined. RESULTS The proximal-distal and anteroposterior dimensions of the RNU were 12 ± 2 mm (range, 7-16 mm) and 18 ± 3 mm (range, 12-24 mm), respectively. The average radius of curvature of the RNU was 15 ± 0 mm (range, 15-16 mm). The radius of curvature did not change significantly when comparing the proximal and distal aspect of the RNU. The RNU was rotated 33° ± 2° (range, 31° to 38°) externally relative to the transverse plane of the ulna. The average depth of the RNU at its deepest point was 2.2 ± 0.4 mm (range, 1.5-2.7 mm). The depth decreased from proximal to distal, being most shallow distally. The depth changed by an increase of the radius of curvature, as well as by rotation in the frontal plane. CONCLUSIONS The RNU anatomy was variable, generally extending laterally from proximal to distal. This suggests that a radial head implant should taper from proximal to distal to optimize contact at the RNU. CLINICAL RELEVANCE The present study investigates the detailed anatomy of the radial notch of the ulna using computed tomography scans. The data might help improve the design of prosthetic components.
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Affiliation(s)
- Kilian Wegmann
- Center for Orthopedic and Trauma Surgery, University Medical Center of Cologne, Cologne, Germany.
| | - Nikolas Knowles
- Roth
- McFarlane Hand and Upper Limb Center, St Joseph's Health Care, University of Western Ontario, London, Ontario, Canada
| | - Emily Lalone
- Roth
- McFarlane Hand and Upper Limb Center, St Joseph's Health Care, University of Western Ontario, London, Ontario, Canada
| | - Lars P Müller
- Center for Orthopedic and Trauma Surgery, University Medical Center of Cologne, Cologne, Germany
| | - George S Athwal
- Roth
- McFarlane Hand and Upper Limb Center, St Joseph's Health Care, University of Western Ontario, London, Ontario, Canada
| | - Graham J W King
- Roth
- McFarlane Hand and Upper Limb Center, St Joseph's Health Care, University of Western Ontario, London, Ontario, Canada
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Ricón FJ, Lajara F, Fuentes A, Aguilar ML, Boix A, Lozano JA. Pyrocarbon arthroplasty in acute unreconstructable radial head fractures: mid-term to long term results. J Orthop Traumatol 2018; 19:13. [PMID: 30136014 PMCID: PMC6105466 DOI: 10.1186/s10195-018-0499-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 01/26/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study is to describe the mid-term radiological findings appearing in patients with a pyrocarbon radial head prosthesis, and to correlate them to patient symptoms. MATERIALS AND METHODS We review 18 patients who underwent radial head implantation of the MoPyC prosthesis between 2004 and 2015, due to unreconstructible radial head fractures. The clinical outcomes were assessed with Mayo Elbow Performance Score (MEPS). Range of motion, pain, and elbow radiological assessments were recorded. A non-parametric, statistical analysis was carried out to assess the radiological findings with the clinical outcomes. RESULTS We have found that after a mean follow-up of 6.5 years (2-11 years), patients have recovered a median flexion arch of 113°, therefore 77% are classed as satisfactory outcomes and the average MEPS score is 89.5. The presence of periprosthetic changes on X-ray is highly frequent-we found radiolucent lines in 38% of cases, radial neck re-absorption in 83%, and arthrosic changes in 78%. However, the differences found when correlating these changes with the clinical results have not been statistically significant (p > 0.05). CONCLUSIONS Satisfactory outcomes can be expected midterm when using pyrocarbon prostheses in around 75% of the cases. We consider radial neck re-absorption to be a sign of good stem osteointegration, whereas progressive radiolucencies and loss of the ballooning of the stem legs are signs of bad prognosis in our series. LEVEL OF EVIDENCE IV retrospective case series.
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Affiliation(s)
- F. Javier Ricón
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, Calle País Valenciano, 14–B21, 03300 Orihuela, Alicante Spain
| | - Francisco Lajara
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, Plaza de la Purisima, 12, 30640 Abanilla, Murcia Spain
| | - Alfonso Fuentes
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, C/Conde de Floridablanca 48, Urbanización Altorreal, 30506 Molina de Segura, Murcia Spain
| | - María Luz Aguilar
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, C/Conquistador Pizarro, 6, 03360 Callosa de Segura, Alicante Spain
| | - Alberto Boix
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, C/Marqués de Molins 45, 03130 Santa Pola, Alicante Spain
| | - Juan A. Lozano
- Orthopaedic and Trauma Surgery Department, Hospital Vega Baja de Orihuela, C/Limón 26, 03300 Orihuela, Alicante Spain
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Laumonerie P, Tibbo ME, Kerezoudis P, Gauci MO, Reina N, Bonnevialle N, Mansat P. Short to midterm outcomes of one hundred and seventy one MoPyC radial head prostheses: meta-analysis. INTERNATIONAL ORTHOPAEDICS 2018; 42:2403-2411. [PMID: 30062566 DOI: 10.1007/s00264-018-4070-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 07/23/2018] [Indexed: 12/01/2022]
Abstract
BACKGROUND The MoPyC implant is an uncemented long-stemmed radial head prosthesis that obtains primary press-fit fixation via controlled expansion of the stem. Current literature regarding MoPyC implants appears promising; however, sample sizes in these studies are small. Our primary objective was to evaluate the short- to midterm clinical outcomes of a large sample of the MoPyC prostheses. The secondary objective was to determine the reasons for failure of the MoPyC devices. METHODS Four electronic databases were queried for literature published between January 2000 and March 2017. Articles describing clinical and radiographic outcomes as well as reasons for reoperation were included. A meta-analysis was performed to obtain range of motion, mean Mayo Elbow Performance score (MEPS), radiographic outcome, and reason for failure. RESULTS A total of five articles describing 171 patients (82 males) with MoPyC implants were included. Mean patient age and follow-up were 52 years (18-79) and 3.1 years (1-9), respectively. Midterm clinical results were good or excellent (MEPS > 74) in 157 patients. Overall complication rate was low (n = 22), while periprosthetic osteolysis was reported in 78 patients. Nineteen patients returned to the operating room, with implant revision being required in ten patients. The two primary reasons for failure were (intra-)prosthetic dislocation (n = 8) followed by stiffness (n = 7); no painful loosening was described. CONCLUSION Short- to midterm outcomes of MoPyC prostheses are satisfactory and complications associated are low. The use of stem auto-expansion as a mode of obtaining primary fixation in radial head arthroplasty appears to be an effective solution for reducing the risk of painful loosening.
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Affiliation(s)
- Pierre Laumonerie
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Place du Docteur Baylac, 31059, Toulouse, France.
| | - Meagan E Tibbo
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, 55905, USA
| | | | - Marc Olivier Gauci
- Department of Orthopaedic Surgery, iULS (Institut Universitaire Locomoteur & Sport) Hôpital Pasteur 2, 06001, Nice, France
| | - Nicolas Reina
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Place du Docteur Baylac, 31059, Toulouse, France
| | - Nicolas Bonnevialle
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Place du Docteur Baylac, 31059, Toulouse, France
| | - Pierre Mansat
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Place du Docteur Baylac, 31059, Toulouse, France
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9
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Laumonerie P, Declaux S, Reina N, Bonnevialle N, Mansat P, Tibbo ME. Letter to the Editor regarding Hackl et al: "Rare implant-specific complications of the MoPyC radial head prosthesis". J Shoulder Elbow Surg 2018; 27:e79-e80. [PMID: 29433649 DOI: 10.1016/j.jse.2017.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 11/07/2017] [Indexed: 02/01/2023]
Affiliation(s)
- Pierre Laumonerie
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Toulouse, France.
| | - Stephanie Declaux
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Nicolas Reina
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Nicolas Bonnevialle
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Pierre Mansat
- Department of Orthopedic Surgery, Hôpital Pierre-Paul Riquet, Toulouse, France
| | - Meagan E Tibbo
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
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10
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Laumonerie P, Reina N, Kerezoudis P, Declaux S, Tibbo ME, Bonnevialle N, Mansat P. The minimum follow-up required for radial head arthroplasty: a meta-analysis. Bone Joint J 2017; 99-B:1561-1570. [PMID: 29212677 DOI: 10.1302/0301-620x.99b12.bjj-2017-0543.r2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 08/11/2017] [Indexed: 11/05/2022]
Abstract
AIMS The primary aim of this study was to define the standard minimum follow-up required to produce a reliable estimate of the rate of re-operation after radial head arthroplasty (RHA). The secondary objective was to define the leading reasons for re-operation. MATERIALS AND METHODS Four electronic databases, between January 2000 and March 2017 were searched. Articles reporting reasons for re-operation (Group I) and results (Group II) after RHA were included. In Group I, a meta-analysis was performed to obtain the standard minimum follow-up, the mean time to re-operation and the reason for failure. In Group II, the minimum follow-up for each study was compared with the standard minimum follow-up. RESULTS A total of 40 studies were analysed: three were Group I and included 80 implants and 37 were Group II and included 1192 implants. In Group I, the mean time to re-operation was 1.37 years (0 to 11.25), the standard minimum follow-up was 3.25 years; painful loosening was the main indication for re-operation. In Group II, 33 Group II articles (89.2%) reported a minimum follow-up of < 3.25 years. CONCLUSION The literature does not provide a reliable estimate of the rate of re-operation after RHA. The reproducibility of results would be improved by using a minimum follow-up of three years combined with a consensus of the definition of the reasons for failure after RHA. Cite this article: Bone Joint J 2017;99-B:1561-70.
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Affiliation(s)
- P Laumonerie
- Institut Locomoteur, Hôpital Pierre-Paul Riquet, Place du Dr Baylac, TSA 40 031, Toulouse 31059, France
| | - N Reina
- Institut Locomoteur, Hôpital Pierre-Paul Riquet, Place du Dr Baylac, TSA 40 031, Toulouse 31059, France
| | - P Kerezoudis
- Mayo Clinic, 1216 2nd Street SW, Rochester, Minnesota 55905, USA
| | - S Declaux
- Institut Locomoteur, Hôpital Pierre-Paul Riquet, Place du Dr Baylac, TSA 40 031, Toulouse 31059, France
| | - M E Tibbo
- Mayo Clinic, 1216 2nd Street SW, Rochester, Minnesota 55905, USA
| | - N Bonnevialle
- Institut Locomoteur, Hôpital Pierre-Paul Riquet, Place du Dr Baylac, TSA 40 031, Toulouse 31059, France
| | - P Mansat
- Institut Locomoteur, Hôpital Pierre-Paul Riquet, Place du Dr Baylac, TSA 40 031, Toulouse 31059, France
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