Table 2.

Constant values show proposed distances from the fibular head, medial epicondyle (ME), lateral epicondyle (LE) and adductor tubercle (AT) to the joint line (JL). Mean difference to the constant value (mm) is the difference between measured and proposed values

Variable	Constant value	Mean difference in constant value	95 % CI	P value
FHMFC	10	2.20	1.47 to 2.93	<0.001
FHLFC		5.33	4.64 to 6.03	<0.001
MEMFC	30.8	3.13	2.40 to 3.85	<0.001
MELFC		0.15	−0.60 to 0.90	0.689
LEMFC	25.3	8.09	7.27 to 8.91	<0.001
LELFC		5.28	4.42 to 6.15	<0.001
ATMFC	48.7	−3.32	−4.30 to −2.34	<0.001
ATLFC		−6.38	−7.37 to −5.39	<0.001

FHMFC distance between the tip of the fibular head (FH) and the joint line (JL) within the medial compartment, FHLFC distance between FH and JL within the lateral compartment, MEMFC distance between the medial epicondyle (ME) and the most distal point of the medial femoral condyle (MFC), MELFC distance between the ME and the most distal point of the lateral femoral condyle (LFC), LEMFC distance from the lateral epicondyle (LE) to the MFC, LELFC distance between LE and LFC, ATMFC distance between the adductor tubercle (AT) and the MFC, ATLFC distance between AT and LFC