Comparison of the outcomes between two 3-component total ankle implants

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Clinical Outcomes Research

Background:

• Total ankle arthroplasty (TAA) utilizes third-generation implants for improved outcomes.
• Limited comparative studies exist for different TAA implant systems.
• This study retrospectively evaluates HINTEGRA versus MOBILITY systems.

Purpose of the Study:

• Compare patient outcomes and complications of HINTEGRA and MOBILITY TAA systems.
• Evaluate clinical results and implant survival rates.
• Identify specific complication profiles for each implant system.

Main Methods:

• Retrospective analysis of 52 patients undergoing TAA with HINTEGRA (21) or MOBILITY (33) implants.
• Follow-up included Visual Analog Scale (VAS) for pain and American Orthopaedic Foot & Ankle Society (AOFAS) scores.
• Radiographic review assessed component positioning, radiolucency, and heterotopic ossification.

Main Results:

• Both groups showed significant VAS pain reduction and AOFAS score improvement.
• HINTEGRA group: 38.1% ankle impingement syndrome; MOBILITY group: 15.2% malleolar fractures.
• No significant differences in osteolysis or neuralgia between implants.

Conclusions:

• Both HINTEGRA and MOBILITY TAA systems provide favorable clinical outcomes.
• Ankle impingement was more frequent with HINTEGRA.
• Malleolar fractures occurred exclusively in the MOBILITY group.