Will Preoperative Atrophy and Fatty Degeneration of the Shoulder Muscles Improve after Rotator Cuff Repair in Patients with Massive Rotator Cuff Tears?

Table 1

Relationship between preoperative atrophy (a)/fatty degeneration (b) and the repair integrity.

		(a) Atrophy				(b) Fatty degeneration
		Ocupation ratio				Goutallier’s classification
		Grade 1	Grade 2	Grade 3	Grade 4	Stage 1	Stage 2	Stage 3	Stage 4
	Type	SSP/ISP	SSP/ISP	SSP/ISP	SSP/ISP	SSP/ISP	SSP/ISP	SSP/ISP	SSP/ISP
Sugaya’s classification	I	0./2	3./8	8./3	2./0	3./2	3./1	7./8
	II	0./1	1./0	2./0		3./3
	III		0./3	3./2	2./0	1./1	2./1	2./3
	IV		0./2	3./0	0./1	1./1	1./0	1./2
	V