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Mancino F, Jones CW, Benazzo F, Singlitico A, Giuliani A, De Martino I. Where are We Now and What are We Hoping to Achieve with Robotic Total Knee Arthroplasty? A Critical Analysis of the Current Knowledge and Future Perspectives. Orthop Res Rev 2022; 14:339-349. [PMID: 36274930 PMCID: PMC9586165 DOI: 10.2147/orr.s294369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Accepted: 09/29/2022] [Indexed: 11/30/2022] [Imported: 08/29/2023] Open
Abstract
Robotic-assisted total knee arthroplasty (rTKA) has been developed to improve knee kinematics and functional outcomes, expedite recovery, and improve implants long-term survivorship. Robotic devices are classified into active, semi-active, and passive, based on their degree of freedom. Their capacity to provide increased accuracy in implants positioning with reduced radiographic outliers has been widely proved. However, these early advantages are yet to be associated with long-term survivorship. Moreover, multiple drawbacks are still encountered including a variable learning curve, increased setup and maintenance costs, and potential complications related to the surgical technique. Despite recent technologies applied to TKA have failed to prove substantial improvements, robotic-assisted surgery seems to be here to stay and revolutionize the field of TKA. To support its consistent usage on a daily basis, long-term results are still awaited, and further improvements are necessary to reduce the expenses related to it.
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Affiliation(s)
- Fabio Mancino
- Department of Orthopaedics, The Orthopaedic Research Foundation of Western Australia (ORFWA), Fiona Stanley Hospital, Perth, Western Australia, Australia
| | - Christopher W Jones
- Department of Orthopaedics, The Orthopaedic Research Foundation of Western Australia (ORFWA), Fiona Stanley Hospital, Perth, Western Australia, Australia,Curtin University, Perth, Western Australia, Australia
| | - Francesco Benazzo
- Sezione di Chirurgia Protesica ad Indirizzo Robotico, Unità di Traumatologia dello Sport, Fondazione Poliambulanza, Brescia, Italy,IUSS, Istituto di Studi Superiori, Pavia, Italy
| | | | | | - Ivan De Martino
- Università Cattolica del Sacro Cuore, Roma, Italy,Unità di Ortopedia e Traumatologia, Dipartimento di Scienze dell’Invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy,Correspondence: Ivan De Martino, Unità di Ortopedia e Traumatologia, Dipartimento di Scienze dell’Invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo A. Gemelli 8, Roma, 00168, Italy, Tel +39 3512412491, Email ;
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Cacciola G, De Martino I, De Meo F. Does the medial pivot knee improve the clinical and radiographic outcome of total knee arthroplasty? A single centre study on two hundred and ninety seven patients. Int Orthop 2019; 44:291-299. [PMID: 31865446 DOI: 10.1007/s00264-019-04462-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 12/06/2019] [Indexed: 12/26/2022] [Imported: 08/29/2023]
Abstract
PURPOSE Total knee arthroplasty (TKA) is a cost-effective surgery with a survival rate higher than 90% after 15 years. Nevertheless, patients are unsatisfied in more than 15% of cases. Medial pivot (MP) prosthetic designs were introduced in late 90's with the aim to reproduce natural knee kinematics. The purpose of this study is to evaluate the survivorship and clinical outcomes of a novel design of MP knee with a minimum follow-up of five years. METHODS This is a retrospective review of all patients who underwent primary TKA using the K-Mod dynamic congruence implant (Gruppo Bioimpianti, Peschiera Borromeo, Milan, Italy) between 2012 and 2013 at a single institution. A total of 339 patients (351 knees) were included with a mean age of 74 years (range 41-89). The Knee Society score, the global range of movement, the Western Ontario and McMaster Universities Osteoarthritis score, Forgotten Joint score, and the short-term form 12 health survey were collected. FJS and SF-12 were collected only post-operatively. Radiographic outcomes were evaluated according to the Knee Society's roentgenographic evaluation system. Kaplan-Meyer (KM) curves were performed to evaluate implant survivorship. A two-tailed paired t test was performed to evaluate the differences between pre-operative and post-operative score. RESULTS A total 297 patients (315 knees) were available for clinical and radiographic analysis, and the mean follow-up was 66.4 months. A total of 17 patients (17 knees 5.4%) experienced a post-operative complication, and a reoperation was performed in five patients (5 knees 1.6%). Four patients had a periprosthetic joint infection, and two patients had a post-traumatic periprosthetic femoral fracture. The KM survivorship at five years was 98.2% (95% CI 0.96 to 0.99) for revision for any reason. There was a statistically significant improvement (p < 0.05) in all the objective and subjective outcomes measured. CONCLUSION The K-Mod dynamic congruence design has shown an excellent clinical, radiographic, and patient-reported outcome in primary TKAs.
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Affiliation(s)
- Giorgio Cacciola
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Via Consolare Valeria 1, Messina, Italy.
- Istituto Ortopedico del Mezzogiorno d'Italia Franco Scalabrino, Messina, Italy.
| | - Ivan De Martino
- Dipartimento Scienze dell'invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Federico De Meo
- Istituto Ortopedico del Mezzogiorno d'Italia Franco Scalabrino, Messina, Italy
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De Martino I, D'Apolito R, Nocon AA, Sculco TP, Sculco PK, Bostrom MP. Proximal femoral replacement in non-oncologic patients undergoing revision total hip arthroplasty. Int Orthop 2018; 43:2227-2233. [PMID: 30415464 DOI: 10.1007/s00264-018-4220-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 10/29/2018] [Indexed: 12/12/2022] [Imported: 08/29/2023]
Abstract
PURPOSE Proximal femoral replacements (PFRs) have been recently utilized in complex revision arthroplasties where proximal femoral bone is compromised. The purpose of this study is to evaluate the clinical outcomes, complications, and survivorship of PFRs as a salvage treatment for severe bone loss after non-oncologic revision total hip arthroplasty. METHODS This is a retrospective review of all patients who underwent femoral revision surgery using a single design PFR between 2004 and 2013 at our institution. Forty patients (41 hips) were included with a mean age of 64 years (29-90). According to Paprosky classification, 15 femurs had type IIIB defect, and 26 had type IV defect. Patients were followed for a mean of five years (2-10). The average length of reconstruction was 150 mm (81-261). A Kaplan-Meier analysis was used to determine the survival of the PFR. RESULTS A total of nine patients (9 PFRs, 22%) were re-operated upon. Three re-operations were for infection, two for dislocation, two for aseptic loosening, and two for periprosthetic fracture. The survivorship at five years was 95.1% for revision of the femoral stem for aseptic loosening. We did not find length of the segmental reconstruction or the indication for revision, to be a risk factor for implant failure or re-revision. CONCLUSIONS Proximal femoral replacements have shown an acceptable survivorship in non-oncologic revision hip arthroplasties for severe proximal femoral bone loss. The frequent use of constrained liners may decrease the risk of dislocation due to the loss of the abductor mechanism encountered in these complex reconstructions.
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Affiliation(s)
- Ivan De Martino
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - Rocco D'Apolito
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Allina A Nocon
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Thomas P Sculco
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Peter K Sculco
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Mathias P Bostrom
- Complex Joint Reconstruction Center, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
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Abstract
PURPOSE OF REVIEW Swimmer's shoulder is the term used to describe the problem of shoulder pain in swimmers. Originally described as supraspinatus tendon impingement under the coracoacromial arch, it is now understood that several different pathologies can cause shoulder pain in competitive swimmers, including subacromial impingement syndrome, overuse and subsequent muscle fatigue, scapular dyskinesis, and laxity and instability. RECENT FINDINGS Swimmers may develop increased shoulder laxity over time due to repetitive use. Such excessive laxity can decrease passive shoulder stability and lead to rotator cuff muscle overload, fatigue, and subsequent injury in order to properly control the translation of the humeral head. Generalized laxity can be present up to 62% of swimmers, while a moderate degree of multi-directional instability can be present in the majority. Laxity in swimmers can be due to a combination of underlying inherent anatomical factors as well as from repetitive overhead activity. The role of excessive laxity and muscle imbalance are crucial in the swimmer's shoulder and should be well understood since they are the primary target of the training and rehabilitation program.
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Affiliation(s)
- Ivan De Martino
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.
| | - Scott A Rodeo
- Sports Medicine and Shoulder Service, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
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De Martino I, D'Apolito R, Waddell BS, McLawhorn AS, Sculco PK, Sculco TP. Response to letter to the editor on "Early intraprosthetic dislocation in dual-mobility implants: a systematic review". Arthroplast Today 2018; 4:133-134. [PMID: 29560410 PMCID: PMC5859558 DOI: 10.1016/j.artd.2017.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 10/31/2022] [Imported: 08/29/2023] Open
Affiliation(s)
- Ivan De Martino
- Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.,Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Rocco D'Apolito
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Bradford S Waddell
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Alexander S McLawhorn
- Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.,Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Peter K Sculco
- Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.,Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Thomas P Sculco
- Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA.,Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA
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De Martino I, De Santis V, D'Apolito R, Sculco PK, Cross MB, Gasparini G. The Synergy cementless femoral stem in primary total hip arthroplasty at a minimum follow-up of 15 years. Bone Joint J 2017; 99-B:29-36. [PMID: 28053254 DOI: 10.1302/0301-620x.99b1.bjj-2016-0231.r1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/05/2016] [Indexed: 11/05/2022] [Imported: 08/29/2023]
Abstract
AIMS We report on the outcome of the Synergy cementless femoral stem with a minimum follow-up of 15 years (15 to 17). PATIENTS AND METHODS A retrospective review was undertaken of a consecutive series of 112 routine primary cementless total hip arthroplasties (THAs) in 102 patients (112 hips). There were 60 female and 42 male patients with a mean age of 61 years (18 to 82) at the time of surgery. A total of 78 hips in the 69 patients remain in situ; nine hips in eight patients died before 15 years, and 16 hips in 16 patients were revised. Clinical outcome scores and radiographs were available for 94 hips in 85 patients. RESULTS In all, four stems were revised. One stem was revised for aseptic loosening; two stems because of deep infection; and one because of periprosthetic femoral fracture. There was a significant improvement in all components of the Western Ontario and McMaster Universities Osteoarthritis Index score at the final follow-up (total: p < 0.001, pain: p < 0.001, stiffness: p < 0.001, function: p < 0.001). The mean Harris Hip Scores improved from 47 points (27 to 59) pre-operatively to 89 points (65 to 100) at the latest follow-up (p < 0.001). Kaplan-Meier survivorship, with stem revision for aseptic loosening as the endpoint, was 98.9% at 15 years (95% confidence interval (CI) 96.9 to 100, number at risk at 15 years: 90) and with stem revision for any reason was 95.7% (95% CI 91.7 to 99.8, number at risk at 15 years: 90). CONCLUSION The Synergy cementless femoral stem demonstrates excellent survivorship and functional outcomes at 15 years. Cite this article: Bone Joint J 2017;99-B:29-36.
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Affiliation(s)
- I De Martino
- Hospital for Special Surgery, Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - V De Santis
- Catholic University of the Sacred Heart, Agostino Gemelli University Hospital, Orthopaedic Surgery Division, Department of Geriatrics, Neurosciences and Orthopaedics, Largo Agostino Gemelli 8, Rome, 00168, Italy
| | - R D'Apolito
- Catholic University of the Sacred Heart, Agostino Gemelli University Hospital, Orthopaedic Surgery Division, Department of Geriatrics, Neurosciences and Orthopaedics, Largo Agostino Gemelli 8, Rome, 00168, Italy
| | - P K Sculco
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - M B Cross
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - G Gasparini
- University of Catanzaro Magna Græcia, Orthopaedic Surgery Division, Department of Medical and Surgical Sciences, Viale Europa, Localitá Germaneto, Catanzaro, 88100, Italy
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De Martino I, D'Apolito R, Soranoglou VG, Poultsides LA, Sculco PK, Sculco TP. Dislocation following total hip arthroplasty using dual mobility acetabular components: a systematic review. Bone Joint J 2017; 99-B:18-24. [PMID: 28042114 DOI: 10.1302/0301-620x.99b1.bjj-2016-0398.r1] [Citation(s) in RCA: 123] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/05/2016] [Indexed: 11/05/2022] [Imported: 08/29/2023]
Abstract
AIMS The aim of this systematic review was to report the rate of dislocation following the use of dual mobility (DM) acetabular components in primary and revision total hip arthroplasty (THA). MATERIALS AND METHODS A systematic review of the literature according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines was performed. A comprehensive search of Pubmed/Medline, Cochrane Library and Embase (Scopus) was conducted for English articles between January 1974 and March 2016 using various combinations of the keywords "dual mobility", "dual-mobility", "tripolar", "double-mobility", "double mobility", "hip", "cup", "socket". The following data were extracted by two investigators independently: demographics, whether the operation was a primary or revision THA, length of follow-up, the design of the components, diameter of the femoral head, and type of fixation of the acetabular component. RESULTS In all, 59 articles met our inclusion criteria. These included a total of 17 908 THAs which were divided into two groups: studies dealing with DM components in primary THA and those dealing with these components in revision THA. The mean rate of dislocation was 0.9% in the primary THA group, and 3.0% in the revision THA group. The mean rate of intraprosthetic dislocation was 0.7% in primary and 1.3% in revision THAs. CONCLUSION Based on the current data, the use of DM acetabular components are effective in minimising the risk of instability after both primary and revision THA. This benefit must be balanced against continuing concerns about the additional modularity, and the new mode of failure of intraprosthetic dislocation. Longer term studies are needed to assess the function of these newer materials compared with previous generations. Cite this article: Bone Joint J 2017;99-B(1 Supple A):18-24.
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Affiliation(s)
- I De Martino
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - R D'Apolito
- Catholic University of the Sacred Heart, Agostino Gemelli University Hospital, Largo Agostino Gemelli 8, Rome, 00168, Italy
| | - V G Soranoglou
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - L A Poultsides
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - P K Sculco
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - T P Sculco
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
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De Martino I, D'Apolito R, Waddell BS, McLawhorn AS, Sculco PK, Sculco TP. Early intraprosthetic dislocation in dual-mobility implants: a systematic review. Arthroplast Today 2017; 3:197-202. [PMID: 28913407 DOI: 10.1016/j.artd.2016.12.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/07/2016] [Accepted: 12/09/2016] [Indexed: 12/26/2022] [Imported: 08/29/2023] Open
Abstract
Background Dual mobility implants are subject to a specific implant-related complication, intraprosthetic dislocation (IPD), in which the polyethylene liner dissociates from the femoral head. For older generation designs, IPD was attributable to late polyethylene wear and subsequent failure of the head capture mechanism. However, early IPDs have been reportedly affecting contemporary designs. Methods A systematic review of the literature according to the preferred reporting items for systematic reviews and meta-analyses guidelines was performed. A comprehensive search of PubMed, MEDLINE, Embase, and Google Scholar was conducted for English articles between January 1974 and August 2016 using various combinations of the keywords “intraprosthetic dislocation,” “dual mobility,” “dual-mobility,” “tripolar,” “double mobility,” “double-mobility,” “hip,” “cup,” “socket,” and “dislocation.” Results In all, 16 articles met our inclusion criteria. Fourteen were case reports and 2 were retrospective case series. These included a total of 19 total hip arthroplasties, which were divided into 2 groups: studies dealing with early IPD after attempted closed reduction and those dealing with early IPD with no history of previous attempted closed reduction. Early IPD was reported in 15 patients after a mean follow-up of 3.2 months (2.9 SD) in the first group and in 4 patients after a mean follow-up of 15.1 months (9.9 SD) in the second group. Conclusions Based on the current data, most cases have been preceded by an attempted closed reduction in the setting of outer, large articulation dislocation, perhaps indicating an iatrogenic etiology for early IPD. Recognition of this possible failure mode is essential to its prevention and treatment.
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De Martino I, D'Apolito R, McLawhorn AS, Fehring KA, Sculco PK, Gasparini G. Social media for patients: benefits and drawbacks. Curr Rev Musculoskelet Med 2017; 10:141-145. [PMID: 28110391 DOI: 10.1007/s12178-017-9394-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] [Imported: 08/29/2023]
Abstract
PURPOSE OF REVIEW Social media is increasingly utilized by patients to educate themselves on a disease process and to find hospital, physicians, and physician networks most capable of treating their condition. However, little is known about quality of the content of the multiple online platforms patients have to communicate with other potential patients and their potential benefits and drawbacks. RECENT FINDINGS Patients are not passive consumers of health information anymore but are playing an active role in the delivery of health services through an online environment. The control and the regulation of the sources of information are very difficult. The overall quality of the information was poor. Bad or misleading information can be detrimental for patients as well as influence their confidence on physicians and their mutual relationship. Orthopedic surgeons and hospital networks must be aware of these online patient portals as they provide important feedback on the patient opinion and experience that can have a major impact on future patient volume, patient opinion, and perceived quality of care.
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Affiliation(s)
- Ivan De Martino
- Complex Joint Reconstruction Center, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - Rocco D'Apolito
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Alexander S McLawhorn
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Keith A Fehring
- Hip & Knee Center, Ortho Carolina, 2001 Vail Avenue Suite 200A, Charlotte, NC, 28207, USA
| | - Peter K Sculco
- Adult Reconstruction and Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Giorgio Gasparini
- Orthopedic Surgery Division, Department of Medical and Surgical Sciences, University of Catanzaro Magna Græcia, Viale Europa, Germaneto, 88100, Catanzaro, CZ, Italy
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De Martino I, De Santis V, Sculco PK, D'Apolito R, Assini JB, Gasparini G. Tantalum Cones Provide Durable Mid-term Fixation in Revision TKA. Clin Orthop Relat Res 2015; 473:3176-82. [PMID: 25968895 DOI: 10.1007/s11999-015-4338-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/27/2015] [Indexed: 01/31/2023] [Imported: 08/29/2023]
Abstract
BACKGROUND Multiple studies have reported favorable short-term outcomes using tantalum cones to reconstruct massive bone defects during revision TKA. However, longer-term followup is needed to determine the durability of these reconstructions. QUESTIONS/PURPOSES We wished to determine the mid-term (1) reoperation rates for septic and aseptic causes, (2) radiologic findings of osseointegration, and (3) clinical outcomes based on the Knee Society score in patients who underwent revision knee arthroplasty with tantalum cones for severe bone loss. METHODS We retrospectively evaluated records of 18 patients (18 knees) who underwent revision knee arthroplasty with use of tantalum cones between 2005 and 2008; the primary indications for use of this approach were to reconstruct massive bone defects classified as Anderson Orthopaedic Research Institute Types 2B and 3. During this period, all defects of this type were treated with this approach and no cones were used for more-minor defects. A total of 26 cones (13 tibial and 13 femoral) were implanted. There were 12 female and six male patients with a mean age of 73 years (range, 55-84 years) at the time of revision. The indication for the revision included aseptic loosening (five patients) and second-stage reimplantation for deep infection (13 patients). Patients were followed for a mean of 6 years (range, 5-8 years). No patient was lost to followup. Clinical and radiographic outcomes were assessed with the Knee Society clinical rating system and radiographic evaluation system. RESULTS There have been two reoperations for recurrent infection; at surgery, the two cones showed osseointegration. No evidence of loosening or migration of any implant was noted on the most recent radiographs. Knee Society knee scores improved from a mean of 31 points before surgery to 77 points at latest followup (p < 0.001), and function scores improved from a mean of 22 points to 65 points (p < 0.001). CONCLUSIONS Tantalum cones for reconstruction of massive bone defects in revision knee arthroplasty provided secure fixation with excellent results at average followup of 6 years, although this series included relatively few patients. These devices are a viable option for surgeons to use in situations with severe bone loss. Further studies with longer followups are needed to confirm the durability of these reconstructions. LEVEL OF EVIDENCE Level IV, therapeutic study.
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