Table 8.

The Extrusion width (EW) and the Inner width (IW) of the medial meniscus (MM) and the lateral meniscus (LM) in the 10 matched control knees. The measurements were performed on the MR images taken before meniscectomy and at the time in a range from 3 to 50 weeks after the meniscectomy. In the “Changes between the 2 periods”, plus and minus values show an increase and a decrease of the width, respectively

Patient No.	Age Sex	Before meniscectomy				1 year after meniscectomy				Changes between the 2 periods
		EW (mm)		IW (mm)		EW (mm)		IW (mm)		EW (mm)		IW (mm)
		MM	LM	MM	LM	MM	LM	MM	LM	MM	LM	MM	LM
1.	50’s, F	1.4	1.6	7.8	10.5	1.6	1.8	5.7	9.2	0.2	0.2	2.1	1.3
2.	60’s, F	2.8	−1.2	5.6	7.9	2.8	−1.6	3.6	7.8	0.0	−0.4	2.0	0.1
3.	60’s, F	1.4	−0.3	8.7	12.5	1.5	0.0	4.7	12.4	0.1	0.3	4.0	0.1
4.	60’s, F	4.4	1.9	5.2	5.2	4.6	2.2	2.4	5.2	0.2	0.3	2.8	0.0
5.	60’s, F	1.8	0.2	6.7	10.1	2.2	0.0	3.8	9.8	0.4	−0.2	2.9	0.3
6.	70’s, F	3.4	0.8	4.1	9.1	3.5	1.0	3.2	8.9	0.1	0.2	0.9	0.2
7.	70’s, F	2.7	−2.2	3.9	12.5	2.8	−2.1	2.7	12.6	0.1	0.1	1.2	−0.1
8.	70’s, F	2.9	0.6	8.5	9.7	3.5	1.1	4.8	7.1	0.6	0.5	3.7	2.6
9.	80’s, M	3.9	−0.6	7.2	15.3	5.5	−0.4	4.4	15.6	1.6	0.2	2.8	−0.3
10.	60’s, M	5.5	0.0	5.2	15.0	5.6	−0.1	3.3	15.3	0.1	−0.1	1.9	−0.3
Mean		3.0	0.1	6.3	10.8	3.4	0.2	3.9	10.4	0.3	0.1	2.4	0.4
(SD)		(1.3)	(1.2)	(1.7)	(3.0)	(1.4)	(1.3)	(1.0)	(3.3)	(0.5)	(0.3)	(0.9)	(0.9)
P value		P = 0.0002 a		P = 0.0010 a		P = 0.0002 a		P < 0.0001 a		P = 0.0039 b	N.S. b	P = 0.0020 b	N.S. b

^a comparison between the MM and the LM (Mann-Whitney U test). ^b comparison between the 2 periods (Wilcoxon matched-pairs signed rank test)