Abstract
Background
Postoperative pain following (Mobility TM) ankle arthroplasty (AA) is recognised problem. This study aimed to determine pattern of postoperative pain following Ankle arthroplasty (AA).
Materials and Methods
In prospective observational study 135 patients who had (AA) and follow-up of 12–36 months were included. AOFAS ankle score, patients' satisfaction, SF36 and diagrammatic mapping of postoperative pain among other parameters were collected preoperatively and postoperatively at 3 months, 6 months and the annually. Patients with AOFAS of < 50 with postoperative ankle pain were examined in details.
Results
From total of 135 of patients with follow-up of 12 months, (12.5%)17 patients have low AOFAS score and ankle pain, 11(12.5%) of 85 patients with 2 year follow-up and (10.6%),5 of 47 patients with 3 year follow-up. Most of patients with low AOFAS score during first year have improved but 3 patients. Different group patients developed ankle pain during the second and third year. 3 patients of 5, in year 3 follow-up have medial side ankle pain and 2 lateral; similarly there is more medial sided pain during year 2 review (7/11). There is more medial sided pain noticed during first postoperative year as well. Lateral pain seems to relate with subtalar joints problems. Medial side pain is less understandable, it might be due to tension in medial ankle ligaments. Our study showed improvement in AOFAS score and pain relief associated with medial ligaments release or medial malleolus fracture.
Conclusion
There are 10–13 % of low AOFAS scores following Ankle Arthroplasty with ankle pain. There are emerging evidences explaining postoperative ankle pain. Further studies are required in this field.
