Topographic study of the isometry testing in anatomic reconstructions of the anterior cruciate ligament of the knee

Figures & data

Figure 8. Height from the guidewire to the intercondylar roof.

Source: Anatomy Laboratory–UNIRIO, 2014–2015.

Figure 1. Guidewire passing between the anteromedial and posterolateral bundles of the ACL.

Source: Anatomy Laboratory–UNIRIO, 2015.

Figure 2. Ethibond 2 suture thread passing between the anteromedial and posterolateral bundles of the ACL.

Source: Anatomy Laboratory–UNIRIO, 2015.

Figure 3. Hemostatic forceps placed on the suture thread, 1 cm from the tibial cortex with the knee in flexion.

Source: Anatomy Laboratory–UNIRIO, 2015.

Figure 4. Thread measurement with the knee in extension.

Source: Anatomy Laboratory–UNIRIO, 2014–2015.

Figure 5. Distance from the guidewire placed in the tibial “footprint” to the PCL.

Source: Anatomy Laboratory–UNIRIO, 2014–2015.

Figure 6. Height of the guidewire exit point in relation to the anteroposterior measurement of the lateral femoral condyle.

Source: Anatomy Laboratory–UNIRIO, 2014–2015.

Figure 7. Height from the articular surface of the tibia to the intercondylar roof.

Source: Anatomy Laboratory–UNIRIO, 2014–2015.

Table 1. Obtained values from eight measurements performed on the 16 studied knees

Cadaver	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	Max	Min	Median	Mode	DP
Lat–lat tibia	68	76	68	78	88	76	86	80	86	82	82	78	88	80	74	74	88	68	79	68	6.282250128
Height guide–art surf	21	16	21	38	25	16	16	20	27	27	24	30	25	20	24	25	38	16	23.4375	16	5.715111547
guide–LCP	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	0
lat–lat femur	73	78	86	86	72	73	86	80	78	86	86	80	78	72	78	86	86	72	79.875	86	5.524189232
AP femur	61	72	76	71	64	61	71	67	72	76	76	67	72	64	72	71	76	61	69.5625	72	5.006246099
Height guide	25	26	27	26	22	25	26	23	26	27	27	23	26	22	26	26	27	22	25.1875	26	1.721191448
Height tibia–roof	32	32	30	32	30	32	34	34	32	32	35	29	30	29	32	32	35	29	31.6875	32	1.740450133
Guide–roof	16	16	15	16	15	16	17	17	16	16	15	15	15	15	16	16	17	15	15.75	16	0.6831300511

Measurements (mm), lat/lat tibia, guidewire height/sup articular tibia, distance PCL–thread, lat/lat femur, AP femur, thread height × lat condyle, tibia–roof, thread–roof. Source: UNIRIO Anatomy Laboratory, 2014–2015. 338

Table 2. Descriptive analysis of the distance between the guidewire and the intercondylar 341 roof and between the articular surface of the tibia and the femoral intercondylar roof 342

Descriptive analysis	Dist guidewire-roof	Dist tibia-roof
Mean	15.75	31.735
Standard error	0.170782513	0.385951206
Median	16	32
Mode	16	32
SD	0.683130051	1.543804824
Variance	0.466666667	2.383333333
Curtosis	−0.592061	−0.654794372
Asymmetry	0.358493904	0.019413095
Interval	2	5
Min	15	29
Max	17	34
□□	252	502
Count	16	16
Confidence (95%)	0.364014308	0.822635519

Source: UNIRIO, 2014–2015 347.