This project highlights the red flags in postoperative rehabilitation of total ankle replacement (TAR) patients managed with two different postoperative rehab regimes. 20 TAR patients were recruited for a pilot RCT between 2008 and 2011; they were randomized to 2 groups (immobilisation in a below knee plaster cast for 6 weeks vs. early mobilisation following TAR); all patients underwent a graded outpatient Physiotherapy program until 12 weeks postoperatively. Assessments included questionnaires, complications, American Orthopaedic Foot and Ankle Score (AOFAS) done preoperatively, 3 and 6 months after surgery 20 TARs for OA (13) and PTOA (7) took part in the trial. There were 10 patients in each arm of the study. Mean age 61.2 years; mean BMI was 29.4. Of the plaster group, there was 1 incidence of fracture medial These results highlights the need for considering a lighter exercise regime, and re-evaluating patient lifestyle, return to recreational activities and feedback on home exercise programs during planning and execution of each phase of postoperative rehabilitation programs to aid prevention of early fractures in patients following TAR.Results
Conclusion
The aim of this study was to investigate the
possible benefit of large-head metal-on-metal bearing on a stem
for primary hip replacement compared with a 28 mm diameter conventional
metal-on-polyethylene bearing in a prospective randomised controlled
trial. We investigated cemented stem behaviour between these two
different bearings using Einzel-Bild-Röntgen-Analyse, clinical and
patient reported measures (Harris hip score, Western Ontario and
McMaster Universities osteoarthritis index, Short Form-36 and satisfaction)
and whole blood metal ion levels at two years. A power study indicated
that 50 hips were needed in each group to detect subsidence of >
5 mm at two years with a
p-value of <
0.05. Significant improvement (p <
0.001) was found in the mean
clinical and patient reported outcomes at two years for both groups.
Comparison of outcomes between the groups at two years showed no
statistically significant difference for mean stem migration, clinical
and patient reported outcomes; except overall patient satisfaction which
was higher for metal-on-metal group (p = 0.05). Metal ion levels
were raised above the Medicines and Healthcare products Regulatory
Agency advised safety level (7 µg per litre) in 20% of the metal-on-metal
group and in one patient in metal-on-polyethylene group (who had
a metal-on-metal implant on the contralateral side). Two patients
in the metal-on-metal group were revised, one for pseudotumour and
one for peri-prosthetic fracture. Use of large modular heads is associated with a risk of raised
whole blood metal ion levels despite using a proven bearing from
resurfacing. The head-neck junction or excess stem micromotion are
possibly the weak links warranting further research.
