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Ji F, Zhao Z, Zhang L, Liu T, Xu B, Li W, Yang S, Wang T. The interval between staged bilateral total knee arthroplasties does not affect early complications of the second knee or long-term function of the first and second knees. BMC Surg 2024; 24:152. [PMID: 38745287 PMCID: PMC11092125 DOI: 10.1186/s12893-024-02442-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND This study explored the optimal time interval between staged bilateral total knee arthroplasty (BTKA) to minimize early complications of the second TKA and maximise the long-term function of the first and second knees. METHODS We retrospectively reviewed 266 patients who underwent staged BTKA between 2013 and 2018. Groups 1-4 had time intervals between BTKAs of 1-6, 6-12, 12-18, and 18-24 months, respectively. Demographics, postoperative complications within 90 days of the second TKA, Knee Society Score (KSS), and Western Ontario and McMaster Universities Arthritis Index (WOMAC) score were compared among the groups. RESULTS In total, 54, 96, 75, and 41 patients were assigned to groups 1-4, respectively. Although group 1 had the highest overall complication rate (11.11%), there was no significant difference in the complication rate among the four groups. Also, no significant differences were found among the four groups in functional and patient-reported outcomes, in either the first or second knee at 5 years postoperatively, including KSS-knee, KSS-function, WOMAC-pain, WOMAC-stiffness, and WOMAC-physical function. The interval between BTKA did not influence complications or the function of the second knee. The TKA type (posterior-stabilised vs. medial-pivot) and age did not correlate significantly with any scores. CONCLUSIONS There was no group difference in early complications of the second TKA, and postoperative function was equivalent between the two knees and did not vary by the interval between surgeries. The results of this study give surgeons and patients more choices. If patients cannot tolerate severe symptoms in the contralateral knee after the first TKA, the second TKA should be performed as early as possible. If knee joint function is not well recovered after the first TKA, and patients are anxious to undergo the second TKA, surgeons can advise patients to postpone the operation based on these results.
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Affiliation(s)
- Feng Ji
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Zhenguo Zhao
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Lei Zhang
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Tongkai Liu
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Baoqiang Xu
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Wei Li
- Department of Orthopedics, The Affiliated Hospital of Jining Medical University, No. 89, Guhuai Road, Jining, 272000, Shandong, China
| | - Shuai Yang
- Institute of Orthopedics, Hebei Medical University Third Hospital, No.139 Ziqiang Road, Shijiazhuang, 050000, Hebei, China.
| | - Tianrui Wang
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266000, Shandong, China.
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Pan X, Emara AK, Zhou G, Koroukian S, Klika AK, Molloy RM, Piuzzi NS. What Is the Safest Intersurgical Interval between Staged Bilateral Total Knee Arthroplasty? A Nationwide Analysis of 20,279 Patients. J Knee Surg 2024; 37:56-65. [PMID: 36588280 DOI: 10.1055/s-0042-1759704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In staged bilateral total knee arthroplasty (BTKA), the intersurgical time is yet to be determined. This study aimed to (1) test for differences in in-hospital metrics between the index and contralateral TKA and (2) determine the safest intersurgical time interval to minimize adverse outcomes after the contralateral surgery. The National Readmissions Database was queried for patients who received staged BTKA (2016-2017). A total of 20,279 patients were included. Demographics, comorbidities, baseline determinants, and intersurgical time between index and contralateral TKAs (≤ 3 month, 4-6 months, 7-9 months, and 10-12 months intervals) were captured. Outcomes included healthcare utilization (length of stay [LOS] and nonhome discharge), in-hospital costs, and in-hospital complications. Outcomes were compared between index versus contralateral surgeries and among contralateral surgeries of various intersurgical intervals. Contralateral surgeries had shorter LOS (2.2 ± 1.9 vs. 2.4 ± 2.0 days; p < 0.001), lower nonhome discharge (n = 2692[13.2%] vs. n = 2963[14.7%]; p = 0.001), and in-hospital costs ($16,476 ± $7,404 vs. 16,774 ± $9,621; p < 0.001), but similar rates of nonmechanical (p = 0.40) complications compared with index TKA. Multivariable regression demonstrated that intersurgical time was not associated with nonmechanical complications or transfusion, or 30-day readmission (p > 0.05, each). Compared with the less than or equal to 3-month interval, the 4 to 6-month interval exhibited highest odds ratio (OR) of any infection (OR: 1.81; 95% confidence interval [CI]: [1.13-2.88]; p = 0.013), urinary tract infection (OR:1.81, 95%CI: [1.13-2.90]; p = 0.014), and any-cardiac complications (OR:1.17; 95%CI: [1.01-1.35]; p = 0.037). Patients in the 10-12-month cohort had lowest odds of posthemorrhagic anemia (OR: 0.84; 95% CI: [0.72-0.98]; p = 0.03). Overall, the second surgery of a staged BTKA has lower healthcare utilization despite similar complication rates. While patients in the 10 to 12-month intersurgical interval had the most favorable overall safety profile, no single interval exhibited consistently lower complications for all measured outcomes. Special care pathways should be optimized to care for patients undergoing staged BTKA.
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Affiliation(s)
- Xuankang Pan
- Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Ahmed K Emara
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Guangjin Zhou
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Siran Koroukian
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, Ohio
| | - Alison K Klika
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Robert M Molloy
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Nicolas S Piuzzi
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
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Lee SS, Lee J, Moon YW. Efficacy of immediate postoperative intravenous iron supplementation after staged bilateral total knee arthroplasty. BMC Musculoskelet Disord 2023; 24:17. [PMID: 36611148 PMCID: PMC9824915 DOI: 10.1186/s12891-023-06133-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Approximately 26% of patients undergoing major orthopedic elective procedures have preoperative anemia. This study aimed to investigate the effect of intravenous (IV) iron supplementation on the hemoglobin (Hb) level after staged bilateral total knee arthroplasty (TKA) in patients with or without preoperative anemia. METHODS We retrospectively analyzed 418 patients who underwent staged bilateral TKA (1 week interval). The iron group (n = 220) received IV iron isomaltoside immediately after each TKA. The no-iron group (n = 198) was recommended to receive transfusion if postoperative anemia was diagnosed between the first and second TKA. Preoperative anemia was present in 42 (21.2%) and 50 (22.7%) patients in the no-iron and iron groups, respectively. Demographic data, preoperative and postoperative Hb levels, Hb level change (preoperative minus postoperative 6-week Hb level), and blood drainage amount were compared between groups. RESULTS The transfusion rate was lower in the iron group than in the no-iron group (96.5% vs. 58.6%, P < 0.001). Overall, the demographic data, preoperative and postoperative 6-week Hb levels, Hb level change, and blood drainage amount were not significantly different between the two groups. Among patients with preoperative anemia, the iron group showed lower Hb level change (0.6 ± 0.9 vs. 0.1 ± 1.1, P = 0.016). CONCLUSION Patients with preoperative anemia treated with IV iron showed lower Hb level change than did those without IV iron treatment. Despite the lower transfusion rate, the iron group showed similar postoperative 6-week Hb level and Hb level change to the no-iron group.
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Affiliation(s)
- Sung-Sahn Lee
- grid.411612.10000 0004 0470 5112Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University School of Medicine, Gyeonggido Goyangsi, South Korea
| | - Jeounghun Lee
- grid.264381.a0000 0001 2181 989XDepartment of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Ilwon street, Gangnam-Gu, 06351 Seoul, South Korea
| | - Young-Wan Moon
- grid.264381.a0000 0001 2181 989XDepartment of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Ilwon street, Gangnam-Gu, 06351 Seoul, South Korea
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Wang KY, LaVelle MJ, Gazgalis A, Bender JM, Geller JA, Neuwirth AL, Cooper HJ, Shah RP. Bilateral Total Knee Arthroplasty: Current Concepts Review. JBJS Rev 2023; 11:01874474-202301000-00011. [PMID: 36722826 DOI: 10.2106/jbjs.rvw.22.00194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
» Bilateral total knee arthroplasty (BTKA) is an effective surgical treatment for bilateral knee arthritis and can be performed as a simultaneous surgery under a single anesthetic setting or as staged surgeries on separate days. » Appropriate patient selection is important for simultaneous BTKA with several factors coming into consideration such as age, comorbidities, work status, and home support, among others. » While simultaneous BTKA is safe when performed on appropriately selected patients, current evidence suggests that the risk of complications after simultaneous BTKA remains higher than for staged BTKA. » When staged surgery is preferred, current evidence indicates that complication risks are minimized if the 2 knees are staged at least 3 months apart. » Simultaneous BTKA is the economically advantageous treatment option relative to staged BTKA, primarily because of shorter total operative time and total hospital stay.
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Affiliation(s)
- Kevin Y Wang
- Department of Orthopedic Surgery, Columbia University Irving Medical Center, New York, New York
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Agarwal AR, Gu A, Wang KY, Harris AB, Campbell JC, Thakkar SC, Golladay GJ. Interval Time of at Least 6 Weeks Between Bilateral Total Knee Arthroplasties is Associated With Decreased Postoperative Complications. J Arthroplasty 2022; 38:1063-1069. [PMID: 36566996 DOI: 10.1016/j.arth.2022.12.037] [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: 06/27/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Staged, bilateral total knee arthroplasty (TKA) has an increased risk of complications if the second procedure is performed before physiologic recovery from the first. The aims of this study were to 1) determine whether there is a time-dependent relationship between TKA staging and rates of revisions and complications and 2) identify data-driven time intervals that reduce risk of revisions and complications. METHODS Data were collected from a national insurance database from 2015 to 2018. Staged intervals were initially assessed using fixed 6-week intervals. Stratum-specific likelihood ratio analyses were subsequently conducted to observe data-driven staging thresholds. Bivariate and multivariable regression analyses were conducted to determine the associations between the time intervals and 2-year rates of revision surgery and 90-day major complications. We included 25,527 patients undergoing staged bilateral TKA. RESULTS In comparison to the shortest fixed time interval (1-6 weeks), as the staging interval increased the odds of 2-year all-cause revision and 90-day major complications significantly decreased (P < .05 for all). Stratum-specific likelihood ratio analysis identified 3 data-driven staging categories 1-5, 6-17, and 18-24 weeks that maximized the difference in both 2-year rates of revision and 90-day major complications. CONCLUSION Our data showed a time-dependent relationship between the timing of TKA stages and complications. If staging is considered, a delayed interval of at least 6 weeks between procedures may significantly reduce revision and major complications. LEVEL OF EVIDENCE Level III Therapeutic Study.
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Affiliation(s)
- Amil R Agarwal
- Department of Orthopaedic Surgery, George Washington University Hospital, Washington, District of Columbia; Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, Maryland
| | - Alex Gu
- Department of Orthopaedic Surgery, George Washington University Hospital, Washington, District of Columbia
| | - Kevin Y Wang
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, Maryland
| | - Andrew B Harris
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, Maryland
| | - Joshua C Campbell
- Department of Orthopaedic Surgery, George Washington University Hospital, Washington, District of Columbia
| | - Savyasachi C Thakkar
- Department of Orthopaedic Surgery, Adult Reconstruction Division, Johns Hopkins University, Columbia, Maryland
| | - Gregory J Golladay
- Department of Orthopedic Surgery, Virginal Commonwealth University Medical Center Orthopaedics, Richmond, Virginia
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Gruenberger E, Bae AS, Kelly T, Ponce BA, McGrory J. Patient-reported dissatisfaction following second side in staged bilateral total knee arthroplasty: A systematic review. World J Orthop 2022; 13:1029-1037. [PMID: 36439367 PMCID: PMC9685631 DOI: 10.5312/wjo.v13.i11.1029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 08/16/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Around one third of patients who undergo total knee arthroplasty (TKA) will eventually have the contralateral knee replaced. Overall patient satisfaction after staged bilateral total knee arthroplasty procedures performed on different days is reportedly similar to unilateral TKA. Nevertheless, in our anecdotal experience patients often report less satisfying outcomes following the second side. A cursory review of available literature tended to confirm that observation. We sought therefore to consolidate all of the available data on this issue to further investigate this phenomenon.
AIM To consolidate available published data revealing satisfaction scores among patients following staged bilateral TKA, and to evaluate the phenomenon of less satisfying results following TKA2.
METHODS A systematic review of available literature reporting on satisfaction with TKA1 and TKA2 after staged bilateral knee arthroplasty was undertaken using PubMed, Google Scholar, and Embase. From 427 records, five full-length articles met criteria for inclusion in the meta-analysis. The data were then extracted and assessed on the basis of the Reference Citation Analysis (https://www.referencecitationanalysis.com/).
RESULTS A total of 1889 patients with an average age of 68 (range: 38–92) underwent staged bilateral TKA with outcomes reported at 1 year following each TKA with a mean 21.9 mo between surgeries (range: 2 d to 14.5 years). Overall satisfaction with both knees was 83.70% (1581) and dissatisfaction with both knees was 2.75% (52). In the remaining 13.56% (256) who were dissatisfied with one side, 61.0% were dissatisfied with TKA2, and 39.0% were dissatisfied with TKA1. Patient-reported outcome scores for TKA2 were frequently lower than TKA1 even in patients reporting overall satisfaction with both knees.
CONCLUSION At 1-year follow-up, there was a 50% greater risk of dissatisfaction with TKA2 among the 13.56% of patients reporting dissatisfaction in one knee after staged bilateral TKA. Whether the interval between procedures or long-term follow-up changes these results requires further investigation.
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Affiliation(s)
| | - Andrew S Bae
- Department of Orthopedic Surgery, Jack Hughston Memorial Hospital, Phenix City, AL 36867, United States
| | - Tyler Kelly
- The Hughston Foundation, Columbus, GA 31909, United States
| | - Brent A Ponce
- The Hughston Foundation, Columbus, GA 31909, United States
| | - James McGrory
- Department ofOrthopedic Surgery, Hughston Foundation and Jack Hughston Memorial Hospital, Columbus, GA 31909, United States
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Babazadeh S, Spelman TD, Dowsey MM, Choong PFM. Low grade of radiographic osteoarthritis predicts unsatisfactory response of the contralateral knee replacement in two-stage bilateral total knee arthroplasty. Knee Surg Sports Traumatol Arthrosc 2022; 30:875-881. [PMID: 33528593 DOI: 10.1007/s00167-021-06465-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE It is difficult to counsel patients with bilateral osteoarthritis who are unsatisfied with their first knee replacement as to whether they are likely to have a better outcome after the contralateral knee is replaced. The purpose of this study was to determine whether predictive factors can be found to prognosticate outcome of the second-side knee replacement when a patient has an unsatisfactory response to the first, with the hypothesis that predictors, such as prosthetic factors and radiographic level of osteoarthritis, may be able to predict a satisfactory response to the contralateral knee replacement. MATERIALS AND METHODS An analysis of staged bilateral knee replacements performed at a tertiary arthroplasty centre from 2012 to 2018 was undertaken. A total of 550 knee replacements in 275 patients were included in this study. The primary variable measured was the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score. Satisfactory response to surgery was defined as a WOMAC score improved by 17 points or more, and 56 or greater. Patients who did not achieve a satisfactory response with their first knee replacement were further analysed for predictive factors (age, sex, pre-operative score, mental score, socioeconomic status, type of prosthesis, use of navigation, patella resurfacing and radiographic osteoarthritis) of an unsatisfactory response for their contralateral knee replacement. RESULTS Overall, 44 (16%) patients failed to achieve a satisfactory response from both their first and contralateral knee replacements. The factor most predictive of an unsatisfactory response to their first knee replacement was pre-operative mental health score. However, in patients who did not achieve a satisfactory response with their first knee replacement, radiographic osteoarthritis, as measured by the Kellgren-Lawrence (KL) score was the main predictor of satisfactory response for their contralateral knee replacement. Only patients with KL grade 4 osteoarthritis were likely to have a satisfactory response with their contralateral knee replacements (KL4 versus KL3, Odds ratio 3.57 (CI 1.26-10.03) p = 0.016*). Patients with KL grade 3 osteoarthritis were unlikely to have a satisfactory response, and in this series, no patient with KL grade 2 osteoarthritis had a satisfactory response. CONCLUSION In a patient who has an unsatisfactory response to their first knee replacement, the best predictor of achieving a satisfactory response to his/her contralateral knee replacement is the level of radiographic osteoarthritis in that knee. LEVEL OF EVIDENCE IV: Retrospective Cohort study.
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Affiliation(s)
- Sina Babazadeh
- Department of Orthopaedics, St. Vincent's Hospital (Melbourne), PO Box 2900, Fitzroy, VIC, 3065, Australia. .,Department of Surgery, University of Melbourne, Parkville, VIC, Australia. .,Australian Orthopaedic Research Group, Kew, VIC, Australia.
| | - Tim D Spelman
- Department of Surgery, University of Melbourne, Parkville, VIC, Australia.,Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Michelle M Dowsey
- Department of Orthopaedics, St. Vincent's Hospital (Melbourne), PO Box 2900, Fitzroy, VIC, 3065, Australia.,Department of Surgery, University of Melbourne, Parkville, VIC, Australia
| | - Peter F M Choong
- Department of Orthopaedics, St. Vincent's Hospital (Melbourne), PO Box 2900, Fitzroy, VIC, 3065, Australia.,Department of Surgery, University of Melbourne, Parkville, VIC, Australia
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Crawford DA, Adams JB, Hurst JM, Morris MJ, Berend KR, Lombardi AV. Interval Between Staged Bilateral Total Knee Arthroplasties Does Not Affect Early Medical or Surgical Complications. J Arthroplasty 2021; 36:537-541. [PMID: 32839059 DOI: 10.1016/j.arth.2020.07.083] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/16/2020] [Accepted: 07/30/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The purpose of this study is to evaluate early postoperative surgical and medical complications in patients undergoing staged bilateral total knee arthroplasty (TKA) and determine if the interval to the second stage influences the risk of complications. METHODS A retrospective review was performed from 2016 through 2018 of all staged bilateral primary TKA procedures, yielding a cohort of 1005 patients (2010 TKAs). Four groups were created based on the timing of the second stage: 3 to 6 weeks, 7 to 12 weeks, 13 to 24 weeks, and >24 weeks. Clinical data compared between groups included demographics, knee range of motion, University of California, Los Angeles (UCLA) activity score, Knee Society pain score, Knee Society clinical score, and Knee Society functional score. Postoperative complications within 90 days were evaluated, with complications after the second knee being the primary outcome. RESULTS The mean follow-up after second stage was 10.7 months (range, 3 to 37 months). No significant differences were found between groups in the range of motion, Knee Society pain, Knee Society clinical score, Knee Society functional score, or University of California Los Angeles activity score in either the first or second knee. After the first knee surgery, medical complications were highest in the >24-week group. After the second knee, there were no significant difference in manipulation (P = .9), wound complications (P = .7), venous thromboembolism (P = .8), or other medical complications (P = 1) based on the interval duration. CONCLUSION The interval between staged TKA did not affect early medical or surgical complications after the second stage. Early clinical and function results were not different based on timing of the second surgery.
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Affiliation(s)
| | | | - Jason M Hurst
- Joint Implant Surgeons, Inc., New Albany, OH; Mount Carmel Health System, New Albany, OH
| | - 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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9
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Clement ND, Merrie KL, Weir DJ, Holland JP, Deehan DJ. Asynchronous Bilateral Total Knee Arthroplasty: Predictors of the Functional Outcome and Patient Satisfaction for the Second Knee Replacement. J Arthroplasty 2019; 34:2950-2956. [PMID: 31331702 DOI: 10.1016/j.arth.2019.06.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/19/2019] [Accepted: 06/26/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The primary aim of this study is to identify independent preoperative predictors of outcome and patient satisfaction for the second total knee arthroplasty (TKA). METHODS A retrospective cohort of 454 patients undergoing an asynchronous (6 weeks or more apart) bilateral primary TKA were identified from an arthroplasty database. Patient demographics, comorbidities, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and Short Form-12 scores were collected preoperatively and 1 year postoperatively. Overall patient satisfaction was assessed at 1 year. RESULTS The 1 year WOMAC pain score (P = .01), and improvement in WOMAC pain (P < .001) and functional (P = .002) scores were significantly lower for the second TKA. Worse preoperative WOMAC pain, function, and stiffness scores were demonstrated to be independent predictors of improvement in the WOMAC pain, function, and stiffness scores, respectively, for both the first and second TKA. The overall rate of satisfaction with the first TKA was 94.0% and 94.7% for the second TKA (P = .67). The rate of satisfaction for the second TKA was 77.8% for patients that were dissatisfied with their first TKA, which was an independent predictor of dissatisfaction (P = .02). CONCLUSION Improvement in pain and function is less with the second TKA, but the satisfaction rate remains similar. There are common independent predictors for change in the WOMAC score for the first and second TKA; however, the predictors of satisfaction were different with no common factors. Patients that were dissatisfied with their first TKA were more likely to be dissatisfied with their second TKA. LEVEL OF EVIDENCE II Prognostic retrospective cohort study.
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Affiliation(s)
- Nicholas D Clement
- Department of Orthopedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Katie L Merrie
- Department of Orthopedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - David J Weir
- Department of Orthopedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - James P Holland
- Department of Orthopedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - David J Deehan
- Department of Orthopedics, Freeman Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
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