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Total ankle arthroplasty can improve outcomes in coronal plane deformity
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Although research has shown satisfactory outcomes for total ankle arthroplasty in patients with preoperative coronal plane deformity of greater than 10°, it is still considered a relative contraindication; however, researchers recently reported the effective use of total ankle arthroplasty in a patient with a severe preoperative varus deformity without the need for osteotomy.
The researchers performed total ankle arthroplasty using the Inbone II Prophecy total ankle system (Wright Medical Technologies) in a 54-year-old man who presented with severe right-ankle varus deformity of 29°. The patient also underwent subsequent Brostrom Evans ligament reconstruction for lateral ankle instability. The researchers used preoperative CT imaging navigation to develop a patient-specific guide that was used intraoperatively.
Andrew Hanselman
Results showed improvement at 3 months with neutral alignment and no evidence of component loosening or failure. Additionally, the patient’s postoperative coronal plane angle was 1.8°, according to the researchers.
The patient was able to ambulate without assistance and participate in full activity at 8 months postoperatively, with a full ankle flexion-extension range of motion of 40°, according to study results. Scores for the Academy of Orthopaedics Surgeons Foot and Ankle Module improved from a Global Foot Health score of 2 preoperatively to 52 postoperatively, and from a Shoe Comfort score of 33 preoperatively to 59 postoperatively. The researchers also found improvement in all domains of the SF-12. – by Casey Tingle
Disclosures: Hanselman reports no relevant financial disclosures. Please see the full study for all other authors’ relevant financial disclosures.
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