Two to Five-Year Outcomes of Total Ankle Arthroplasty with the Infinity Fixed-Bearing Implant: A Concise Follow-up of a Previous Report.

LEVEL OF EVIDENCE: Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Total Ankle Replacement Versus Arthrodesis for End-Stage Ankle Osteoarthritis: A Randomized Controlled Trial.

BACKGROUND: End-stage ankle osteoarthritis causes severe pain and disability. There are no randomized trials comparing the 2 main surgical treatments: total ankle replacement (TAR) and ankle fusion (AF). OBJECTIVE: To determine which treatment is superior in terms of clinical scores and adverse events. DESIGN: A multicenter, parallel-group, open-label randomized trial. (ISRCTN registry number: 60672307). SETTING: 17 National Health Service trusts across the United Kingdom. PATIENTS: Patients with end-stage ankle osteoarthritis, aged 50 to 85 years, and suitable for either procedure. INTERVENTION: Patients were randomly assigned to TAR or AF surgical treatment. MEASUREMENTS: The primary outcome was change in Manchester-Oxford Foot Questionnaire walking/standing (MOXFQ-W/S) domain scores between baseline and 52 weeks after surgery. No blinding was possible. RESULTS: Between 6 March 2015 and 10 January 2019, a total of 303 patients were randomly assigned; mean age was 68 years, and 71% were men. Twenty-one patients withdrew before surgery, and 281 clinical scores were analyzed. At 52 weeks, the mean MOXFQ-W/S scores improved for both groups. The adjusted difference in the change in MOXFQ-W/S scores from baseline was -5.6 (95% CI, -12.5 to 1.4), showing that TAR improved more than AF, but the difference was not considered clinically or statistically significant. The number of adverse events was similar between groups (109 vs. 104), but there were more wound healing issues in the TAR group and more thromboembolic events and nonunion in the AF group. The symptomatic nonunion rate for AF was 7%. A post hoc analysis suggested superiority of fixed-bearing TAR over AF (-11.1 [CI, -19.3 to -2.9]). LIMITATION: Only 52-week data; pragmatic design creates heterogeneity of implants and surgical techniques. CONCLUSION: Both TAR and AF improve MOXFQ-W/S and had similar clinical scores and number of harms. Total ankle replacement had greater wound healing complications and nerve injuries, whereas AF had greater thromboembolism and nonunion, with a symptomatic nonunion rate of 7%. PRIMARY FUNDING SOURCE: National Institute for Health and Care Research Heath Technology Assessment Programme.

Clinical and Radiographic Outcomes of Revision Total Ankle Arthroplasty Using the INBONE II Prosthesis.

BACKGROUND: The literature on the outcome of revision total ankle arthroplasty (TAA) remains limited. In this study, we aimed to report the clinical and radiographic outcomes of revision TAA at a high-volume center in the United Kingdom. METHODS: This study was a retrospective review of 28 patients who underwent 29 revision TAAs using the INBONE II Total Ankle System (Wright Medical Technology/Stryker). Demographic, radiographic, and patient-reported outcome measure data were analyzed. RESULTS: The mean duration from primary TAA to revision was 87.5 months (range, 16 to 223 months). The main indication for the revision was aseptic loosening after the primary TAA (83%). Additional procedures were required in 76% of ankles. At a mean follow-up of 40 months (range, 24 to 60 months), the infection rate was 7%, the reoperation rate was 7%, and the implant survival rate was 97%. A significant postoperative improvement in the radiographic component alignment measures was observed. The subsidence, loosening, and heterotopic ossification rates in this study were comparable with those in other reports and did not influence the clinical outcome. A significant improvement was observed in the Manchester-Oxford Foot Questionnaire (MOXFQ) in all domains and the EuroQol-5 Dimensions (EQ-5D) in 3 domains at 24 months postoperatively. CONCLUSIONS: Revision TAA using the INBONE II prosthesis was associated with good short-term survival and improvement in postoperative scores at 2 years. Maintenance of the postoperatively improved alignment was documented at the follow-up. The results of this study support the notion that revision TAA is a satisfactory option for failed primary TAA. LEVEL OF EVIDENCE: Therapeutic Level IV . See Instructions for Authors for a complete description of levels of evidence.

Total ankle replacement : comparison of the outcomes of STAR and Mobility.

Total Ankle Replacement is a recognised treatment for end-stage ankle arthritis and an alternative to arthrodesis. This study reviews a single centre series of prospectively collected outcome measures to determine whether the Mobility performs better than the Scandinavian ankle replacement. The primary outcome measure was the survivorship. Secondary outcome measures consisted of complications and international scoring systems. 147 Scandinavian and 162 Mobility ankle replacements were reviewed at a mean follow up of 12.4 and 7.7 years respectively. The revision rate, which included liner exchange, component exchange or removal of implant was at 7 years 12.3% (18) for Scandinavian and 5.2% (8) for Mobility. The complication rate was 16.5% (22) for Scandinavian compared to 9.9 % (15) for Mobility. The results of our unit compare favourably with previous published studies. In this study the Mobility has been shown to have more favourable results at 7 years compared to the Scandinavian.

Treatment of Acetabular Fractures in Adolescents.

Although the treatment of acetabular fractures in adults has evolved substantially, treatment of these injuries in adolescents remains primarily nonoperative. We performed a retrospective review to evaluate outcomes of treatment of adolescent acetabular fractures. We identified 38 adolescent acetabular fractures (patient ages, 11-18 years), all treated by an experienced trauma surgeon. Open reduction and internal fixation (ORIF) was performed in 37 cases, and 1 case was treated nonoperatively. Mean follow-up was 38.2 months. All fractures healed. Reduction was anatomical in 30 cases, imperfect in 7. One patient had surgical secondary congruence, 1 had preoperative deep vein thrombosis, 1 developed a deep infection, and 2 had femoral head avascular necrosis and developed posttraumatic arthritis (both had hip dislocations). Of the 38 patients, 34 returned to full activity. At latest follow-up, 29 had no pain, and 6 had mild intermittent pain not limiting activity. ORIF was found to be safe and to result in predictable union. We therefore advocate a more aggressive strategy. Given our low complication rate, we recommend nonoperative management only for stable, minimally displaced fractures (<1 mm). Unstable fractures, fractures with any hip subluxation, and fractures displaced more than 1 mm should be managed with ORIF. As reported in adults, articular injury often is associated with secondary degenerative arthritis. This association is expected in adolescents as well. Given adolescents' life expectancy subsequent to injury and surgery, any late posttraumatic arthritis will have a significant impact on quality of life over the long term, with increased duration compared with adults.