Does exchange arthroplasty of an infected shoulder prosthesis provide better eradication rate and better functional outcome, compared to a permanent spacer or resection arthroplasty? a systematic review

Table 6 Post-operative functional outcome scores (and change of scores) between the different treatment modalities

Revision arthroplasty		Post-operative constant score		Significance (p-value)*
Revision arthroplasty		Score (mean)	SD	Significance (p-value)*
Permanent spacer		31.0	8.89
	Resection arthroplasty	32.5	7.09	0.7895
	Single-stage	50.5	13.08	0.0787
	Two-stage	43.6	8.91	0.1006
Single-stage		50.5	13.08
	Resection arthroplasty	32.5	7.09	0.0214
	Two-stage	43.6	8.91	0.3764
Two-stage		43.6	8.91
	Resection arthroplasty	32.5	7.09	0.0465
		Difference in constant score^a
		Mean	SD
Two-stage		30.5	14.85
	Resection arthroplasty^b	14.00	-	-
	Single-stage	21.50	13.44	0.5901
	Permanent Spacer^b	12.00	-	-

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