*3.4. Complications*

Of 26 patients, we reported a total of two (8%) complications throughout the post-RSA follow-up, one (4%) of which required revision surgery.

The first reported complication involved one patient who encountered instability 7 weeks post-RSA while undergoing physiotherapy. During a reoperation, the inlay liner was exchanged and a larger one was implanted. At 43 months after the secondary intervention, no further dislocations were encountered and a CS of 76 points and SSV of 70% was documented. The second complication was an acromion stress fracture reported at 39 months post-RSA. The affected patient declined the possibility of undergoing a reoperation after being informed of the potential risks associated with further surgery and opted for conservative treatment. This patient achieved the worst clinical outcome in our cohort with a CS of 52 points and forward flexion of 80◦, but remained satisfied with their outcome despite a SSV of 70%.

After further investigations into our medical records, an additional patient was documented with a posterior dislocation 6 weeks post-RSA and underwent early revision surgery to increase the inlay liner. This patient was excluded from this analysis based on the diagnosis of severe dementia and inability to comply with the required follow-up examination.
