Feline Shoulder Arthrodesis Using 3D-printed Patient-specific Guides
🔍 Key Findings
- 3D-printed patient-specific guides (PSG) enabled accurate surgical planning and osteotomy execution for feline shoulder arthrodesis, improving control of humeroscapular alignment.
- Four cats with severe shoulder pathology (instability, osteoarthritis, recurrent luxation, or glenoid dysplasia) were treated successfully using CAD-planned osteotomies and PSG-assisted fixation.
- Preoperative CT-based planning standardized scapular and humeral axes, allowing planned scapulohumeral arthrodesis angles of 105–110°.
- Postoperative alignment closely matched planned angles, differing by only 2–5°, demonstrating high transfer accuracy from digital planning to surgery.
- All cats were weight-bearing within 48 hours, and long-term follow-up showed good to excellent functional outcomes with only mild mechanical lameness.
- Complications were minor and implant-related, including Kirschner wire migration and screw loosening, neither resulting in catastrophic failure.
- Double plating constructs provided strong stability, and the authors recommend compression or dual-plate fixation to reduce osteotomy strain and improve healing.
- PSG technology may reduce malalignment risk compared with traditional arthrodesis techniques, but requires CAD expertise, 3D-printing resources, and additional surgical planning time.
Simini Surgery Review Podcast
🔍 Key Findings
- 3D-printed patient-specific guides (PSG) enabled accurate surgical planning and osteotomy execution for feline shoulder arthrodesis, improving control of humeroscapular alignment.
- Four cats with severe shoulder pathology (instability, osteoarthritis, recurrent luxation, or glenoid dysplasia) were treated successfully using CAD-planned osteotomies and PSG-assisted fixation.
- Preoperative CT-based planning standardized scapular and humeral axes, allowing planned scapulohumeral arthrodesis angles of 105–110°.
- Postoperative alignment closely matched planned angles, differing by only 2–5°, demonstrating high transfer accuracy from digital planning to surgery.
- All cats were weight-bearing within 48 hours, and long-term follow-up showed good to excellent functional outcomes with only mild mechanical lameness.
- Complications were minor and implant-related, including Kirschner wire migration and screw loosening, neither resulting in catastrophic failure.
- Double plating constructs provided strong stability, and the authors recommend compression or dual-plate fixation to reduce osteotomy strain and improve healing.
- PSG technology may reduce malalignment risk compared with traditional arthrodesis techniques, but requires CAD expertise, 3D-printing resources, and additional surgical planning time.
Simini Surgery Review Podcast
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