Strength of the porcine proximal femoral epiphyseal plate: the effect of different loading directions and the role of the perichondrial fibrocartilaginous complex and epiphyseal tubercle – an experimental biomechanical study

Journal of Experimental Orthopaedics

Table 2 Microscopic characteristics of the specimens

Specimen	Slide	Microscopic epiphyseolysis present	Percentage of epiphysis damaged	Epiphyseal zone damaged	Salter Harris classification	Perichondral fibrocartilaginous complex damaged	Epiphyseal tubercle present
Anterior specimen 1
	1	Yes	100	Resting/ossifying	1	No	No
	2	Yes	68	Resting	1	No	No
	3	Yes	77	Resting/ossifying	1	No	No
	4	Yes	100	Resting/ossifying	2	Yes	Yes
Anterior specimen 2
	1	Yes	89	Resting/ossifying	2	No	No
	2	Yes	63	Ossifying	1	No	No
	3	Yes	80	Resting/ossifying	1	N/A	No
	4	Yes	81	Resting/ossifying	1	No	No
Anterior specimen 3
	1	Yes	100	Resting/ossifying	1	No	No
	2	Yes	100	Resting/ossifying	1	No	No
	3	Yes	100	Resting/ossifying	1	No	Yes
	4	Yes	100	Resting/ossifying	1	No	Yes
Lateral specimen 1
	1	Yes	83	Resting/ossifying	1	Yes	No
	2	Yes	84	Ossifying	1	No	No
	3	Yes	87	Resting/ossifying	1	N/A	Yes
	4	Yes	100	Resting/ossifying	2	No	Yes
Lateral specimen 2
	1	Yes	100	Resting/ossifying	2	Yes	No
	2	Yes	55	Resting/ossifying	1	Yes	No
	3	Yes	75	Resting/ossifying	1	Yes	Yes
	4	Yes	75	Resting/ossifying	1	Yes	Yes
Lateral specimen 3
	1	Yes	64	Resting/ossifying	1	Yes	No
	2	Yes	100	Resting/ossifying	2	N/A	No
	3	Yes	78	Resting/ossifying	1	Yes	Yes
	4	Yes	72	Resting/ossifying	1	Yes	Yes
Vertical specimen 1
	1	Yes	100	Ossifying	1	No	No
	2	Yes	50	Ossifying	1	No	No
	3	Yes	30	Ossifying	1	N/A	Yes
	4	Yes fracture	30	Resting	2	N/A	No
Vertical specimen 2
	1	Yes fracture	70	Ossifying	2	Yes	No
	2	Yes fracture	80	Ossifying	2	Yes	No
	3	Yes fracture	100	Ossifying	2	N/A	Yes
	4	Yes fracture	50	Ossifying	2	Yes	No
Vertical specimen 3
	1	Yes fracture	80	Ossifying	2	No	No
	2	Yes fracture	100	Ossifying	2	N/A	No
	3	Yes fracture	100	Ossifying	2	N/A	Yes
	4	Yes fracture	100	Ossifying	2	N/A	No