Long Term Follow-up After Primary or Revision Shoulder Arthroplasty With a Patient- Specific Glenius Implant

The Glenius glenoid implant is a solution for patients who need a reversed glenoid reconstruction (primary or revision) because of a severely damaged glenoid associated with severe bone loss. In these cases, standard reconstruction of the glenoid is not possible because of the lack of body support of the glenoid rim or columns.

The Glenius implant is custom-made prothesis: during pre-operative planning, the implant is designed based on a detailed 3D CT analysis of the defect with special reference to bone quality and the anatomy of the bone deficient glenoid. Optimized screw fixation trajectories are defined for each individual patient, which accommodate screws that are positioned and angled towards the best bone stock available in the glenoid/coracoid/scapula with each specific patient. The surgeon provides feedback on the the design and orientation of the implant needed to achieve the optimal inclination of the head and the position \& offset of the joint's centre of rotation.

Because Glenius is a relatively new product and only for use in specific and complex cases of severy glenoid erosion, follow-up data on the clinical and radiological outcome are scarce. With this study we aim to collect long-term clinical and radiological follow-up data for patients treated with Glenius in a uniform, standardized way.

• Change in baseline Simple Shoulder Test (SST) after surgery [Срок оценки: 6 weeks, 3 months, 1 year, 2 year, 5 years after surgery]
• Change in baseline Oxford Shoulder Score (OSS) after surgery [Срок оценки: 6 weeks, 3 months, 1 year, 2 year, 5 years after surgery]
• change in general health EQ5D score after surgery [Срок оценки: 6 weeks, 3 months, 1 year, 2 year, 5 years after surgery]
• change in baseline pain score using Visual Analogue Scales (VAS) after surgery [Срок оценки: 6 weeks, 3 months, 1 year, 2 year, 5 years after surgery]
• Translational deviation from planned implant position [Срок оценки: 6 weeks after surgery]
• Rotational deviation from planned implant position [Срок оценки: 6 weeks after surgery]
• Translational deviation from initial implant position [Срок оценки: 1 year after surgery]
• Rotational deviation from initial implant position [Срок оценки: 1 year after surgery]
• Scapular notching [Срок оценки: 6 weeks, 3 months, 1 year, 2 years, 5 years after surgery]
• Radiolucensies [Срок оценки: 6 weeks, 3 months, 1 year, 2 years, 5 years after surgery]
• Heterotopic ossifications [Срок оценки: 6 weeks, 3 months, 1 year, 2 years, 5 years after surgery]
• rate of implant revision surgeries up to 5 years after surgery [Срок оценки: up to 5 years after surgery]