Outcome and revision rate of uncemented humeral head resurfacing: Mid-term follow-up study

Table 1 Demographic data of patients who required revision

Patient	Sex	Age	Indication	Lifespan of the prosthesis	Failure cause	Revision
1	Male	66	Right OA	65 mo (5.41 yr)	Glenoiditis	rTSA
2	Female	78	Right AVN	44 mo (3.66 yr)	Traumatic RCT	rTSA
3	Female	75	Right AVN	50 mo (4.16 yr)	Glenoiditis	rTSA
4	Male	48	Left AVN	66 mo (5.50 yr)	Glenoiditis	TSA

AVN: Avascular necrosis; OA: Osteoarthritis; RCT: Rotator cuff tear; rTSA: Reverse total shoulder arthroplasty.

Table 2 Preoperative and 7.4 yr postoperative clinical finding

	Preoperative value (min-max)	Postoperative value (min-max)	P value
Pain	3.20 (0-5)	12.38 (10-15)	< 0.001
Daily activity level	7.96 (6-11)	16.66 (12-20)	< 0.001
ROM	10.48 (2-17)	35.47 (28-40)	< 0.001
Strength	9.44 (3-25)	10.42 (4-25)	0.3
Constant score	31.08 (16-57)	74.95 (57-100)	< 0.001
VAS	2.88 (1-4)	7.76 (5-10)	< 0.001
Flexion forward	74.80° (30°-120°)	111.42° (60°-160°)	0.06
Abduction	68.00° (30°-120°)	104.28° (60°-160°)	< 0.001
External rotation	30.40° (10°-50°)	54.04° (30°-75°)	< 0.001

ROM: Range of motion; VAS: Visual analog scale.