Radiographic Outcomes of Mobile-Bearing Total Ankle Arthroplasty for Patients With Rheumatoid Arthritis

2019 ◽  
Vol 40 (9) ◽  
pp. 1037-1042
Author(s):  
Koichiro Yano ◽  
Katsunori Ikari ◽  
Ken Okazaki
Keyword(s):  
Rheumatoid Arthritis ◽  
Tibial Component ◽  
Patient Reported Outcomes ◽  
Mobile Bearing ◽  
Total Ankle Arthroplasty ◽  
Ankle Arthroplasty ◽  
Radiographic Outcomes ◽  
Significant Difference ◽  
Patient Reported

Background: Ankle disorders in patients with rheumatoid arthritis (RA) reduce their quality of life and activities of daily living. The aim of this study was to evaluate the midterm clinical and radiographic outcomes of TAA in patients with RA. Methods: This retrospective study included patients with a minimum follow-up of 2 years. A total of 37 RA patients (39 ankles) were enrolled in this study from August 2006 to March 2016. All the patients had undergone primary cemented mobile-bearing total ankle arthroplasty (TAA). Nine ankles received arthrodesis of the subtalar joint simultaneously. Patient-reported outcomes were measured preoperatively and at the latest follow-up by Self-Administered Foot-Evaluation Questionnaire (SAFE-Q). Radiographs of the ankle were analyzed preoperatively and at all follow-up visits to measure the periprosthetic radiolucent line, migration of the tibial component, and the subsidence of the talar component. Intraoperative and postoperative complications were recorded. The average duration of follow-up for the entire cohort was 5.0 ± 2.0 years (range 2.1-10.1 years). Results: All subscales of the SAFE-Q had improved significantly at the latest follow-up. No significant difference was found between the range of motion of the ankle before and after the surgery. Radiolucent lines were observed in 28 (73.7%) ankles. Migration of the tibial component and subsidence of the talar component were found in 8 (21.1%) and 11 (28.9%) ankles, respectively. Intraoperative malleolus fractures occurred in 3 (7.7%) ankles and delayed wound healing in 10 (25.6%) ankles. Four ankles were removed because of deep infection or noninfective loosening, resulting in an implant survival rate of 88.4% (95% CI, 0.76-1.0) at 10 years. Conclusion: The midterm patient-reported outcomes and implant retention rate after cemented mobile-bearing TAA for RA patients were satisfactory. However, a low radiographic implant success rate was observed. Level of Evidence: Level IV, retrospective case series.

scholarly journals A Comparison of Cyst Formation and Management in Mobile-Bearing and Fixed-Bearing Total Ankle Arthroplasty

2019 ◽  
Vol 4 (2) ◽  
pp. 2473011419S0000
Author(s):  
James Lachman ◽  
Michel Taylor ◽  
Elizabeth Cody ◽  
Daniel Scott ◽  
James A. Nunley ◽  
...  
Keyword(s):  
Bone Grafting ◽  
Patient Reported Outcomes ◽  
Mobile Bearing ◽  
Cyst Formation ◽  
Total Ankle Arthroplasty ◽  
Fixed Bearing ◽  
Ankle Arthroplasty ◽  
Ankle Replacement ◽  
Patient Reported

Category: Ankle Arthritis Introduction/Purpose: The Scandinavian Total Ankle Replacement(STAR) system and Salto Talaris(ST) total ankle system are two of the more commonly studied total ankle implants. As the STAR is one of the oldest total ankle arthroplasty (TAA) implants still in use today, most studies focus on longevity and survivorship. Reported rates of cyst formation for these two prosthesis in most series vary from 11-22% but no large study has focused on surgical management of these cysts or included patient reported outcomes after surgery. In this series, we aimed to investigate rates of cyst formation between mobile(MB) and fixed-bearing(FB) TAA and examine clinical and patient reported outcomes of bone grafting or cementing of large cysts surrounding the STAR and ST implants. Methods: A prospectively collected database at a high volume total ankle replacement center was retrospectively reviewed to identify patients who underwent TAA with either the STAR or the ST total ankle system between 2007 and 2015. Cysts were identified and measured on standard weight bearing radiographs and confirmed on computed tomography(CT) when available. Visual analog scale (VAS) score, Short Form-36 (SF-36) physical and mental component scores, Short Musculoskeletal Function Assessment(SMFA), and AOFAS hindfoot scores were collected from all patients preoperatively and then at 6 months, 1 year and annually postoperatively. Patients with a minimum 2 years follow-up who underwent revision TAA secondary to catastrophic bone cysts or who were managed with either curettage and bone grafting or curettage and cementing of bone cysts surrounding the TAA prosthesis were included in the patient reported outcomes (PRO) analysis Results: Excluding 53 patients for inadequate follow-up, 232 patients (29% female, 71% male; follow-up 6.7 years) who underwent STAR-TAA and 147 patients (26.6% female, 73.5% male; follow-up 7 years) who underwent ST-TAA were identified. Cysts <20 mm diameter occurred more often in the MB TAAs, and more often in the tibia than talus (table). Cysts >10 mm were identified in 95/232 (41%) STAR and 24/147 (16%) ST ankles. In the STAR group, 24 patients underwent cyst bone grafting (13), cementing (6) or both (8) at a mean 4.8 years. In the ST group, 14 patients underwent cyst bone grafting (6), cementing (4), or both (4) at a mean of 2.7 years. PRO data improved significantly for both the STAR and ST group in all questionnaires (p<0.05 for all). Conclusion: Mobile-bearing total ankle arthroplasty in this cohort had a higher rate of cyst formation greater than 10 mm (95/232 patients, 41%) when compared to a fixed-bearing TAA (24/147, 16.3%). Only 24/95 (25%) of STAR patients and 14/24 (58%) of ST patients required surgical intervention for cyst management. Patient reported outcomes after cyst surgery improved significantly when compared to pre-cyst management surgery and did not differ between MB and FB cohorts (p=0.424). Successful surgical management of large cyst surrounding either mobile-bearing or fixed-bearing total ankle systems can be expected based on the results of this study. [Table: see text]

scholarly journals Minimum 5 Year Follow-Up Evaluation of a Third Generation Fixed Bearing Total Ankle Arthroplasty with an Intramedullary Tibial Component and a Central Suclus Talus

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0027
Author(s):  
Evan M. Loewy ◽  
Robert B. Anderson ◽  
Bruce E. Cohen ◽  
Carroll P. Jones ◽  
W. Hodges Davis
Keyword(s):  
Tibial Component ◽  
Patient Reported Outcomes ◽  
Total Ankle Arthroplasty ◽  
Coronal Plane ◽  
Third Generation ◽  
Fixed Bearing ◽  
Ankle Arthroplasty ◽  
Patient Reported ◽  
The Mean

Category: Ankle Arthritis Introduction/Purpose: Total ankle arthroplasty (TAA) has been shown to be a viable option in the treatment of end stage ankle arthritis (ESAA). Early reports demonstrated good results with intramedullary fixation implants. Third generation implants of this kind added a central sulcus to the talar component. This is a report of clinical follow up data from a prospectively collected database at a single US institution using a third generation fixed bearing total ankle arthroplasty implant with a stemmed tibial component and a talar component with a central sulcus. To our knowledge, this is the first report of 5 year follow up data for this implant. Methods: Patients undergoing primary TAA at a single institution by one of four fellowship trained orthopedic foot and ankle surgeons with a third generation fixed bearing implant consisting of an intramedullary stemmed tibial component and a sulcus talus that were at least 5 years postoperative were reviewed from a prospectively collected database. These patients were followed at regular intervals with history, physical examination and radiographs; multiple patient reported outcomes (PRO) measures were obtained. Primary outcomes included implant survivability and PRO scores. Secondary outcomes included coronal plane radiographic alignment (Medial distal tibial articular angle (MDTA) and talar tilt angle (TTA)), evaluation for osteolysis, and failure mode when applicable. All reoperation events were recorded using the Canadian Orthopedic Foot and Ankle Society (COFAS) Reoperations Coding System (CROCS). Results: 121 TAA with this implant were performed in 119 patients between 2010 and 2013; 64 met inclusion criteria. The mean age at surgery was 61.3 ± 10.0 years (range 38.7-84.3). The mean duration of follow up for living patients that retained both initial components at final follow-up was 6.1 ± 0.9 years (range 4.7 – 8.1 years). 26.6% of ankles had a preoperative MDTA and/or TTA greater than 10 degrees. There were 6 (9.4%) failures that occurred at a mean 2.0 ± 1.4 years postoperative. Two failures were due to deep infection. Only one failure was related to tibial component subsidence. One patient is currently scheduled for revision due to talar component subsidence. Conclusion: This cohort of TAA patients with minimum 5 year follow up using a third generation fixed bearing implant demonstrates acceptable implant survival, improved patient reported outcomes scores and maintenance of coronal plane alignment. These data also suggest tolerance of a larger preoperative deformity with improved implant design. To our knowledge, this is the first report with 5 year data on this implant. Continued follow up and reporting is needed to ensure that these favorable outcomes are maintained. Additionally, further investigation on acceptable coronal plane alignment correction with TAA is needed to determine the possible limitations of this procedure.

scholarly journals Defining Responders vs Non-Responders After Total Ankle Arthroplasty

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0040
Author(s):  
John R. Steele ◽  
Daniel J. Cunningham ◽  
James K. DeOrio ◽  
James A. Nunley ◽  
Mark E. Easley ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Multivariate Analysis ◽  
Total Ankle Arthroplasty ◽  
Successful Outcome ◽  
Function Score ◽  
Ankle Arthroplasty ◽  
Sf 36 ◽  
Significant Difference ◽  
Patient Reported

Category: Ankle, Ankle Arthritis Introduction/Purpose: The literature for total ankle arthroplasty (TAA) demonstrates significant improvements in patient- reported outcomes. While these reports focus on the overall study population, it is clear that some patients do not have a successful outcome. In regards to total hip and knee arthroplasty there is literature helping to define responders, or those who achieve a clinical improvement above the level of a minimally clinically important difference. However, characteristics of responders versus non-responders to TAA have not been defined. The purpose of this study was to determine patient comorbidities and characteristics that help distinguish responders from non-responders after TAA. Methods: Patients undergoing TAA between 1/2007 and 12/2016 were enrolled into a prospective study at a single academic center. Patients completed multiple patient reported outcome measures before surgery and in follow-up including the Short Musculoskeletal Function Assessment (SMFA). Patients were characterized as responders if their 2-year follow-up SMFA function score increased by 50% or more compared to preoperatively and were characterized as non-responders if their SMFA score increased by less than 50% at 2-year follow-up, consistent with OMERACT–OARSI responder criteria. Patient and operative factors along with prevalent pre-operative comorbidities were then associated with responder or non-responder status. Comorbidities that met a significance threshold of p<0.05 in adjusted analyses were incorporated into multivariable outcome models. Results: A total of 492 patients with complete data and 2-year follow-up were included in this study. Based on the SMFA function score improvement cutoff of at least 50% at 2-year follow-up, 332 patients were defined as responders and 160 were defined as non-responders. There was no significant difference between pre-operative SMFA function scores between the groups. Responders had significantly higher preoperative SF-36 Mental Component Summary (MCS) scores (p<0.001) and significantly lower rates of rheumatoid arthritis (p<0.001), obesity (p=0.05) and depression (p=0.026) as compared to non-responders. In multivariate analysis, preoperative SF-36 MCS score was found to be significantly associated with responder status (p=0.0056). Conclusion: Patients defined as responders after TAA based on 50% or greater improvement in SMFA function scores at 2-year follow-up had significantly higher pre-operative SF-36 MCS scores and significantly lower rates of rheumatoid arthritis, obesity and depression compared to non-responders. Pre-operative SF-36 MCS score was found to be significantly associated with responder status in multivariate analysis. This suggests that patients with depressive symptoms, but not necessarily a diagnosis of depression may not achieve as favorable results after TAA and should be counseled appropriately.

scholarly journals Short-term Complications, Reoperations, and Radiographic Outcomes of the Infinity Total Ankle Arthroplasty

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0041
Author(s):  
Guilherme Saito ◽  
Austin Sanders ◽  
Cesar de Cesar Netto ◽  
Martin O’Malley ◽  
Scott Ellis ◽  
...  
Keyword(s):  
Patient Reported Outcomes ◽  
Clinical Results ◽  
Total Ankle Arthroplasty ◽  
Ankle Arthroplasty ◽  
Radiographic Outcomes ◽  
Implant Positioning ◽  
Patient Reported ◽  
Outcome Scores

Category: Ankle Arthritis Introduction/Purpose: With the increasing use of total ankle arthroplasty (TAA), new implants with varied configurations are being developed every year. This study aims to provide the early complications, reoperations and radiographic and clinical outcomes of the Infinity TAA. To date, clinical results of this novel fixed-bearing implant have not been published. Methods: A retrospective analysis of 64 consecutive ankles that underwent a primary Infinity TAA from July 2014 to April 2016 was performed. Patients had an average follow-up of 24.5 (range, 18-39) months. Medical records were reviewed to determine the incidence of complications, reoperations and revisions. Radiographic outcomes included preoperative and postoperative tibiotalar alignment, tibial implant positioning, the presence of periprosthetic radiolucency and cysts, and evidence of subsidence or loosening. Additionally, patient-reported outcomes were analyzed with the Foot and Ankle Outcome Score (FAOS) preoperatively and 1-year postoperatively. Results: Survivorship of the implant was 95.3%. Fourteen ankles (21.8%) presented a total of 17 complications (Table 1). A total of 12 reoperations were necessary in 11 ankles (17.1%). Revision surgery was indicated for 3 ankles (4.7%) due to isolated subsidence of the tibial implant in 2 cases and due to subsidence of both the tibial and talar components in 1 case. Tibiotalar coronal deformity was significantly improved after surgery (P < .0001) and maintained during latest follow-up (P = .81). Periprosthetic radiolucent lines were observed around the tibial component in 20 ankles (31%) and around the talar component in 2 ankles (3.1%). A tibial cyst was observed in 1 ankle (1.5%). Outcome scores were significantly improved for all FAOS components analyzed (P < .0001). Conclusion: Most complications observed in the study were minor and successfully treated with a single reoperation procedure or nonoperatively. Failures and radiographic abnormalities were most commonly related to the tibial implant. Further studies with longer follow-up are needed to evaluate the survivorship of the tibial implant in the long-term.

scholarly journals TL 18050 - Short-term complications, reoperations, and radiographic outcomes of Infinity® total ankle arthroplasty

2019 ◽  
Vol 13 (Supl 1) ◽  
pp. 64S
Author(s):  
Guilherme Honda Saito ◽  
Austin Sanders ◽  
Cesar Cesar Netto ◽  
Martin O'Malley ◽  
Scott Ellis ◽  
...  
Keyword(s):  
Patient Reported Outcomes ◽  
Total Ankle Arthroplasty ◽  
Foot And Ankle ◽  
Short Term ◽  
Ankle Arthroplasty ◽  
Radiographic Outcomes ◽  
Patient Reported ◽  
Outcome Scores

Introduction: With the increasing use of total ankle arthroplasty (TAA), new implants with varied configurations are being developed every year. This study aimed to assess the early complications, reoperations, and radiographic and clinical outcomes of this novel implant. Methods: A retrospective analysis of 64 consecutive ankles that underwent a primary Infinity® TAA was performed. Patients had an average follow-up of 24.5 (range, 18-39) months. Medical records were reviewed to determine the incidence of complications, reoperations, and revisions. Additionally, patient-reported outcomes were analyzed with the Foot and Ankle Outcome Score (FAOS). Results: Survivorship of the implant was 95.3%. Fourteen ankles (21.8%) presented a total of 17 complications. A total of 12 reoperations were necessary in 11 ankles (17.1%). Revision surgery was indicated for 3 ankles (4.7%) as a result of subsidence of the implant. Tibiotalar coronal deformity was significantly improved after surgery (P < .0001) and maintained at the latest follow-up (P = .81). Periprosthetic radiolucent lines were observed around the tibial component in 20 ankles (31%) and around the talar component in 2 ankles (3.1%). A tibial cyst was observed in 1 ankle (1.5%). Outcome scores were significantly improved for all FAOS components analyzed (P < .0001). Conclusion: Most complications observed in the study were minor and successfully treated with a single reoperation procedure or nonoperatively. Failures and radiographic abnormalities were most commonly related to the tibial implant. Further studies with longer follow-ups are needed to evaluate the survivorship of the tibial implant over the long term.

scholarly journals Mobile Anatomical Total Ankle Arthroplasty—Improvement of Talus Recentralization

2021 ◽  
Vol 10 (3) ◽  
pp. 554
Author(s):  
Faisal Alsayel ◽  
Mustafa Alttahir ◽  
Massimiliano Mosca ◽  
Alexej Barg ◽  
Mario Herrera-Pérez ◽  
...  
Keyword(s):  
Tibial Component ◽  
Mobile Bearing ◽  
Clinical Results ◽  
Total Ankle Arthroplasty ◽  
Premature Failure ◽  
Ankle Arthroplasty ◽  
Significant Difference ◽  
The Mean ◽  
End Stage

Introduction: Total ankle arthroplasty (TAA) is becoming a more frequent treatment option for end-stage ankle osteoarthritis (OA) as outcomes measures are improving. However, there is concern that malalignment of TAA can result in premature failure of the implant. One of the malalignment issues is the talar sagittal malposition. However, a consensus on the significance of the sagittal translation of the talus in TAA is yet to be established. The aim of this study was, therefore, to clarify whether talus OA subluxation is normalized after the implantation of a mobile TAA. Methods: Forty-nine consecutive patients with symptomatic end-stage ankle OA underwent 50 cementless three-component mobile-bearing VANTAGE TAA with 21 right ankles (42%) and 29 left ankles (58%). Clinical and radiographic outcomes were assessed: Clinical variables: American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score (0–100), visual analogue scale (VAS, 0–10), and ankle range of motion (ROM). Radiological variables: medial distal tibial articular angle (mDTAA), anterior distal tibial articular angle (aDTAA) and lateral talar station (LTS). Results: The clinical results showed the mean improvement in AOFAS hindfoot score from 42.12 ± SE 2.42 (Range: 9–72) preoperatively, to 96.02 ± SE 0.82 (Range: 78–100) at a mean follow-up of 12 months, with a highly statistically significant difference (p < 0.00001). Pain score (VAS) was 6.70 ± SE 0.28 (Range 0–10) preoperatively, and 0.26 ± SE 0.12 (Range: 0–3) at 12-month follow-up, with a highly statistically significant difference (p < 0.00001). ROM measurements preoperatively showed a mean of 22.55° ± SE 1.51° (Range: 0–50°), which showed a statistically significant improvement (p < 0.0001) to 45.43° ± SE 1.56° (Range: 25–60°) 12 months postoperatively. The radiological analyses revealed the following results: On the coronal view, the mDTAA preoperatively was 88.61 ± SE 0.70 (Range: 78.15–101.10), which improved to 89.46 ± SE 0.40 (Range: 81.95–95.80) at 12 months (not statistically significant—p = 0.94). On the sagittal view, the preoperative values of the aDTAA showed 82.66 ± SE 0.84 (Range: 70.35–107.47), which improved to 88.98 ± SE 0.47 (Range: 82.83–96.32) at 12 months postoperatively, with a highly statistically significant difference between preoperative and 12-months values (p < 0.00001). The mean LTS values for all patients were 3.95 mm ± SE 0.78 (Range: −11.52 to 13.89) preoperatively and 1.14 mm ± SE 0.63 (Range: −10.76 to 11.75) at 12 months, with a statistically significant difference between preoperative and 12-month follow-up (p = 0.01). The review of the radiological TAA osteointegration at 12 months showed no cases of loosening of the implanted TAAs. Two cases (4%) showed a radiolucency and one case (2%) a cyst on the tibial component; no cases had a change on the talar component. No TAA complication/revision surgeries were documented. Conclusion: In the present study, the lateral talar station of anteriorly subluxated ankles showed a significant improvement, i.e., physiological centralization of the talus, in the postoperative period when a mobile-bearing TAA was performed. The anterior/posterior congruency between the talar component and the mobile polyethylene insert of the mobile-bearing VANTAGE TAA allows the sagittal translation of the talus relative to the flat tibial component, reducing the prosthesis strain and failure.

No Difference in Outcomes Following Osteochondral Allograft with Fresh Precut Cores Compared to Hemi-Condylar Allografts

Cartilage ◽  
2021 ◽  
pp. 194760352110219
Author(s):  
Danielle H. Markus ◽  
Anna M. Blaeser ◽  
Eoghan T. Hurley ◽  
Brian J. Mannino ◽  
Kirk A. Campbell ◽  
...  
Keyword(s):  
Patient Reported Outcomes ◽  
Knee Injury ◽  
Lesion Size ◽  
Osteochondral Allograft ◽  
Osteochondral Lesions ◽  
Radiographic Outcomes ◽  
Significant Difference ◽  
Patient Reported ◽  
The Mean

Objective The purpose of the current study is to evaluate the clinical and radiographic outcomes at early to midterm follow-up between fresh precut cores versus hemi-condylar osteochondral allograft (OCAs) in the treatment of symptomatic osteochondral lesions. Design A retrospective review of patients who underwent an OCA was performed. Patient matching between those with OCA harvested from an allograft condyle/patella or a fresh precut allograft core was performed to generate 2 comparable groups. The cartilage at the graft site was assessed with use of a modified Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) scoring system and patient-reported outcomes were collected. Results Overall, 52 total patients who underwent OCA with either fresh precut OCA cores ( n = 26) and hemi-condylar OCA ( n = 26) were pair matched at a mean follow-up of 34.0 months (range 12 months to 99 months). The mean ages were 31.5 ± 10.7 for fresh precut cores and 30.9 ± 9.8 for hemi-condylar ( P = 0.673). Males accounted for 36.4% of the overall cohort, and the mean lesion size for fresh precut OCA core was 19.6 mm2 compared to 21.2 mm2 for whole condyle ( P = 0.178). There was no significant difference in patient-reported outcomes including Visual Analogue Scale, Knee Injury and Osteoarthritis Outcome Score for Joint Replacement, and Tegner ( P > 0.5 for each), or in MOCART score (69.2 vs. 68.3, P = 0.93). Conclusions This study found that there was no difference in patient-reported clinical outcomes or MOCART scores following OCA implantation using fresh precut OCA cores or size matched condylar grafts at early to midterm follow-up.

scholarly journals Axial Rotational Alignment of Mobile-Bearing Total Ankle Arthroplasty

2019 ◽  
Vol 4 (4) ◽  
pp. 2473011419S0021
Author(s):  
Beat Hintermann ◽  
Lukas Zwicky ◽  
Christine Schweizer ◽  
Alexej Barg ◽  
Roxa Ruiz
Keyword(s):  
Tibial Component ◽  
Mobile Bearing ◽  
Total Ankle Arthroplasty ◽  
Axial Position ◽  
Anterior Surface ◽  
Ankle Arthroplasty ◽  
Medial Border ◽  
Wide Range ◽  
Angle Of Rotation

Category: Ankle Arthritis Introduction/Purpose: In total ankle arthroplasty (TAA), component malpositioning is a major cause of implant failure, possibly due to the altered force patterns caused by the malpositioning which are then transmitted to the bone-implant interface or neighboring joints during physiological loading. Mobile-bearing TAA with their second interface, may allow the talus to adapt its position based upon the individual anatomy. However, no data exist on the change in component positioning after implantation. It is unclear whether it is the result of initial positioning during implantation or secondary adjustments such as possible soft tissue adaptions. We aimed to determine the relative axial rotation between the talar and tibial components at the end of surgery and after a minimum of 3 years follow-up. Methods: The relative rotation between the tibial and talar components was measured in two groups. First, intraoperatively before wound closure, in a consecutive series of 58 patients (60 ankles; age 61.8 [31 to 86] years; females 25, males, 35) who underwent TAA between February and November 2018. A K-wire inserted along the medial border of the tibial component and a rectangular marker positioned at the anterior surface of PE insert were used to determine the angle of rotation. Second, in 48 patients (48 ankles; age 60.2 [31 - 82] years; females, 24; males, 24) out of 1411 patients who underwent TAA between January 2003 and December 2015, and in whom a weight-bearing CT scan was taken for evaluation at 6.3 (range, 3.0 -16.3) years. The medial border of the tibial component and a perpendicular line to the anterior surface of the PE insert were used to determine the angle of rotation. Results: The angle of rotation, thus the relative position of the talar component compared to the tibial component, did not differ between the two groups (p = 0.2). While the talus was internally rotated by 1.7 (range, -14.0 - 14.0) degrees at the end of surgery, it was internally rotated by 1.5 (range, -13.0 – 19.5) degrees after a minimum follow-up of 3 years (Figure 1). Conclusion: Although there was no significant difference in average axial position measured intraoperatively compared to a 3- years follow-up, there was a wide range of rotational measurements. The possibility of the talar component to find its position as given by individual anatomy may be crucial in TAA to avoid non-physiological joint loads and shear forces which may otherwise result in increased PE wear. Due to the wide range of measurements, our data suggests that axial talar rotation cannot be predicted preoperatively or intraoperatively by surgical techniques that reference the transtibial axis, tibial tuberosity and transmalleolar axis as guidance for tibial component positioning.

scholarly journals The Impact of Pre-Operative Mental Health and Depression on Outcomes after Total Ankle Arthroplasty

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0018
Author(s):  
Daniel J. Cunningham ◽  
John Steele ◽  
Samuel B. Adams
Keyword(s):  
Mental Health ◽  
Patient Reported Outcomes ◽  
Total Ankle Arthroplasty ◽  
Linear Regression Models ◽  
Ankle Arthroplasty ◽  
Change Scores ◽  
Short Musculoskeletal Function Assessment ◽  
Patient Reported ◽  
The Impact

Category: Ankle Introduction/Purpose: Poor pre-operative mental health and depression have been shown to negatively impact patient- reported outcomes (PROMs) after a broad array of orthopaedic procedures involving the spine, hip, knee, shoulder, and hand. However, the relationship of mental health and patient-reported outcomes in foot and ankle surgery is less clear. The purpose of this study is to characterize the impact of pre-operative mental health and depression on patient-reported outcomes after total ankle arthroplasty. The study hypothesis is that depression and decreased SF36 MCS will be significantly associated with diminished improvement in PROMs after total ankle arthroplasty. Methods: All patients undergoing primary TAA between January 2007 and December 2016 who were enrolled into a prospective, observational study and who had at least 1 to 2-year minimum study follow-up were included. Patients were separated into 4 groups based on the presence or absence of SF36 MCS<35 and diagnosis of depression. Pre-operative to post- operative change scores in the SF36 physical and mental component summary scores (PCS and MCS), Short Musculoskeletal Function Assessment (SMFA) function and bother components, and visual analog scale (VAS) pain were calculated in 1 to 2-year follow-up. Multivariable, main effects linear regression models were constructed to evaluate the impact of SF36 and depression status on pre-operative to 1 to 2-year follow-up change scores with adjustment for age, sex, race, body mass index, current smoking, American Society of Anesthesiologist’s score, smoking, and Charlson-Deyo comorbidity score. Results: As in Table 1, adjusted analyses demonstrated that patients with MCS<35 and depression had significantly lower improvements in all change scores including SF36 MCS (-5.1 points) and PCS (-7.6 points), SMFA bother (6 points) and function scores (5.7 points), and VAS pain (7.5 points) compared with patients that had SF36>=35 and no depression. Patients with MCS<35 and no depression had significantly greater improvement in SF36 MCS (5.3 points) compared with patients that had MCS>=35 and no depression. Patients with MCS>=35 and depression had significantly lower improvement in SF36 MCS (-3.2 points) compared with patients that had MCS>=35 and no depression. Adjusted analyses of minimum 5-year outcomes demonstrated significantly increased improvement in MCS and SMFA function for patients with pre-operative MCS<35 and no depression. Conclusion: Presence of depression and decreased SF36 MCS are risk factors for diminished improvement in PROMs. Patients with depression and decreased MCS should be counseled about their risk of diminished improvement in outcomes compared to peers. As PROM’s become part of physician evaluations, it is becoming increasingly important to identify factors for diminished improvement outside of the physician’s control. [Table: see text]

scholarly journals The Infinity Total Ankle System

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0038
Author(s):  
Murray Penner ◽  
W. Hodges Davis ◽  
Thomas Bemenderfer ◽  
Feras Waly ◽  
Robert Anderson
Keyword(s):  
Mobile Bearing ◽  
Clinical Results ◽  
Outcome Data ◽  
Total Ankle Arthroplasty ◽  
Ankle Arthroplasty ◽  
Radiographic Outcomes ◽  
Wright Medical Technology ◽  
The Usa ◽  
Component Revision

Category: Ankle Arthritis Introduction/Purpose: Background: Increasing interest in 2-component total ankle arthroplasty (TAA) designs and the increased use of TAA overall has led to the development of a new generation of 2-component TAA implants. The first of these to become available was the Infinity Total Ankle System (Wright Medical Technology, Memphis, TN), introduced in 2014. Despite it currently being the most commonly used TAA implant in the UK and among the most commonly used in the USA, published clinical results are lacking. Purpose: This study presents the first report of the clinical and radiographic outcomes of the Infinity Total Ankle System with minimum 2 year follow-up Methods: The first 67 consecutive patients who underwent primary Infinity total ankle arthroplasty (TAA) at 2 North American sites between 2013 and 2015 were reviewed in a prospective observational study. Demographic, radiographic, and functional outcome data was collected preoperatively, at 6-12 months postoperatively, and annually thereafter. Results: The overall implant survival rate was 97% (65 of 67 implants) at mean follow up of 3 years (range 27-47 months). Two cases underwent talar component revision for aseptic loosening. Six of the 67 cases (9%) required a non-revision reoperation. Mean FFI and AOS scores at latest follow up improved from preoperative by 21.6 (p<0.0001) and 34.0 (p<0.0001), respectively. No radiographic loosening of any talar or tibial components was identified in the 65 non-revised cases. Conclusion: Early clinical and radiographic outcomes with the Infinity TAA are promising and compare favorably to those reported for both fixed- and mobile-bearing third generation TAA designs, even when used in cases with deformity and increased case complexity.

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