The Bologna–Oxford total ankle replacement

Abstract

The Bologna-Oxford (BOX) total ankle replacement (TAR) was developed with the aim of achieving satisfactory pain-free movement of the ankle. To date, only one single multicentre study has reported its clinical results. The aim of this study was to conduct an independent review of its mid-term results. We retrospectively reviewed a total of 60 prospectively followed patients in whom 62 BOX TARs had been implanted between 2004 and 2008. We used the American Orthopedic Foot and Ankle Society (AOFAS) score to assess the clinical results. Standardised radiographs taken at the time of final follow-up were analysed by two observers. The overall survival was 91.9% at a mean follow-up of 42.5 months (24 to 71). The mean AOFAS score had improved from 35.1 points (sd 16.6; 4 to 73) pre-operatively to 78.0 (sd 10.7; 57 to 100) at final follow-up (p < 0.01). Tibial radiolucencies < 2 mm in width were seen around 16 TARs. Talar radiolucencies < 2 mm were seen around four TARs. A total of 47 patients (78.3%) were very satisfied or satisfied with the outcome. Five patients required revision for functional limitation or continuing pain.

Functional performance of a total ankle replacement: thorough assessment by combining gait and fluoroscopic analyses

“…Post-processing synchronization between the two measuring techniques was easily completed. Finally, it turned out that patients enrolled in the present study had a slightly smaller AOFAS score with respect to that of previous series for the present TAR (Bianchi et al, 2012;Giannini et al, 2010Giannini et al, , 2011; the present mean follow-up was however shorter, and therefore further functional progress is expected for the present patients.…”

“…These were achieved by the special shape of the metal components and a fully conforming and unconstrained meniscal bearing, expected to move forwards and backwards on both metal components during dorsi-and plantar-flexion, respectively. Preliminary clinical and instrumental results from these patients support somehow these claims (Bianchi et al, 2012;Cenni et al, 2012aCenni et al, , 2012bGiannini et al, 2010Giannini et al, , 2011Ingrosso et al, 2009). In addition to these, the authors were interested in providing more complete evidence of restored function both in the overall lower limbs and the replaced ankle, which can be obtained respectively by standard GA and FA.…”

In-Patient Trends and Complications After Total Ankle Arthroplasty in the United States

“…Mechanical complications listed in other studies include nontraumatic fractures of the tibia during implant insertion and fractured inserts at rates of 3.2% to 29% and less than 1%, respectively. 24,25,31 Other common complications quoted in literature include infections (3.2% to 13%), wound healing issues (1.6% to 14%), and postsurgical pain (2% to 4%). [6][7][8][9][23][24][25][26][27][28][29][30][31] Although these complications are not reflected in the current study, they are common reasons for readmission.…”

Long-term follow-up of mobile-bearing total ankle replacement in patients with inflammatory joint disease

“…4,5 Several promising short-and mid-term results have been reported using unconstrained three-component mobile-bearing TARs, and although there is much heterogeneity in the data, recent literature reviews and registry studies have shown rates of survival of between 78% and 95% at five years. 1,3,[6][7][8] The overall survival of TAR in patients with inflammatory joint disease at eight to 12 years has been reported to vary between 69% and 93%. 7,[9][10][11][12][13] However, there is little information about the long-term outcome of mobilebearing TARs, especially in patients with inflammatory joint disease.…”