Table 1.

Type of prosthesis, degree of disengagement, and length of followup for all patients diagnosed with a disengagement of the glenosphere

Patient	Type of prosthesis*	Disengagement	Revision?	Followup (months)	Constant-Murley score [7]
1	Delta III	> 1 mm with fracture of central screw	Yes	14	61
2	Delta III	> 1 mm with fracture of central screw	Yes	48	26
3	Delta III	> 1 mm with fracture of central screw	No†	12	52
4	Delta III	> 1 mm with progressive disengagement	No	72	59
5	Delta III	> 1 mm with spontaneous reassembly	No	24	57
6	Aequalis	< 1 mm with spontaneous reassembly	No	36	81
7	Aequalis	> 1 mm with spontaneous reassembly	No	36	70
8	Aequalis	No disengagement immediately postoperatively but > 1 mm after 2 years	No	24	63
9	Aequalis	No disengagement immediately postoperatively but < 1 mm after 2 years	No	24	45
10	Delta III	< 1 mm	No	24	64
11	Delta III	< 1 mm	No	12	75
12	Delta III	< 1 mm	No	24	57
13	Delta III	< 1 mm	No	36	73
14	Delta III	< 1 mm	No	24	53
15	Aequalis	< 1 mm	No	12	66
16	Delta III	< 1 mm	No	36	45

^*Types of prostheses included Delta III™ (DePuy International Ltd, Leeds, UK) and Aequalis™ (Tornier, Grenoble, France); ^†Patients 1 to 3 had complete disengagement, but only Patients 1 and 2 had revision surgery; Patient 3 refused revision owing to financial reasons.