Change in the Pathologic Supraspinatus: A Three-Dimensional Model of Fiber Bundle Architecture within Anterior and Posterior Regions

Table 3

Median FBL values for the superficial, middle, and deep parts of the anterior and posterior regions.

Region of muscle and tear category		FBL (cm)
		Superficial	Middle	Deep
Anterior
A	4	7.56^a (5.36–10.26)	6.71^b (3.21–10.01)	6.24^c (3.38–8.68)
B	4	5.58^a* (2.97–9.68)	4.71^b (2.59–9.86)	5.16^c* (2.70–9.05)
C	4	2.95^a (1.45–8.98)	2.57^b* (1.04–7.19)	2.50^c* (0.54–5.41)
Posterior
A	4	5.89^a** (2.12–8.47)	6.42^b (2.79–7.91)	5.85^a** (3.19–8.52)
B	4	4.88^a*** (2.13–7.82)	4.98^a*** (1.50–8.92)	4.65^a*** (1.48–8.54)
C	2	2.96^† (1.90–4.47)	3.48^† (1.93–4.76)	2.80^† (1.59–4.59)

A: partial thickness tendon tear; B: full-thickness tear with no retraction of tendon; C: full-thickness tendon tear with retraction; FBL: fiber bundle length; median with ( ) minimum and maximum values. If superscript letters are different, it indicates statistically significant (P < 0.001) difference between the superficial, middle, and deep parts of specimens within the same tear category. ^*P = 0.001; ^**P = 0.699; ^***P = 0.114; ^†statistical analysis was not conducted due to sample size.