Fixation technique of biodegradable magnesium alloy suture anchor in the rotator cuff repair of the shoulder in a goat model: a technical note

Table 1 Histological evaluation format of cell and tissue response for implant material scoring

Group	Control			Test
Implant material	Commercial Titanium suture anchors			Innovative MgF₂ ZK60 suture anchors
Observation period	Post-OP 3ms			Post-OP 3ms
Animal code	G24			G25
Area of interest	Infraspinatus tendon			Infraspinatus tendon
Section code	L shoulder		R shoulder	L shoulder	R shoulder
H&E stain
Polymorphonuclear cells	1		0	1	0
Lymphocytes	1		1	1	1
Plasma cells	0		0	0	0
Macrophages	1		0	1	0
Giant cells	0		1	0	0
Necrosis	0		0	1	0
SUB-TOTAL (x2)	6		4	6	2
Neovascularization	1		0	1	0
Fatty infiltrate	2		0	0	0
MT stain
Fibrosis	3		4	4	4
SUB-TOTAL	6		4	4	4
GROUP TOTAL	12		8	10	6
Average^a	20/2 = 10.0			16/2 = 8.0
		Test-Control = 0.0, no reaction
No. Sites examined	2/2			2/2

Post-OP 3 ms, 3 months postoperatively; H&E stain: hematoxylin and eosin; MT, Masson trichrome
^aUsed to determine reaction ranking shown below as he conclusion. A negative difference was recorded as zero

ISSN: 1471-2474