*3.3. Revisions*

Revision surgery was required for 7 patients (6%) including 2 HA (2%) and 5 TSA (26%) (OR = 20; (95% CI = 4–116); *p* < 0.001). Survival rate without revision at 5 years was 97% (89–99%) for HA and 97% (89–99%) for TSA. At 10 years, survival rate without revision was 95% (68–99%) for HA and 57% (19–82%) for TSA (*p* < 0.001) (Figure 1).

**Figure 1.** Survival curve of HA and TSA after PANHH.

In the HA group, 2 were revised for glenoid wear. The stage of Ficat's classification in pre-operative radiographs was stage 3. The first one was a resurfacing HA (Figure 2) complicated with painful glenoid wear at 49 months and reoperated with a pyrocarbone HA. During the final FU, 2 years after the revision surgery, the Constant score was 55 and SSV 80%.

**Figure 2.** Resurfacing complicated by glenoid wear at 49 months of FU.

The second case was a metal HA where glenoid wear occurred at 25 months of FU (Figure 3). The humeral stem was unchanged and a cemented full PE glenoid was implanted. During the final FU, 3 years after the revision surgery, the Constant score was 57 and SSV 70%.

**Figure 3.** HA metal complicated by glenoid wear at 25 months of FU.

In the TSA group, one patient who had a posterior instability underwent a full-PE implant but due to a glenoid loosening 5 years later, it lead to a definitive explanation of both humeral and glenoid components with a poor functional result (CS = 15). Three patients with glenoid loosening were reoperated using HA (Figure 4).

**Figure 4.** (**a**) TSA complication due to glenoid loosening at 9 years FU and (**b**) reoperated using an HA.
