Table 5.
Ultimate strain data of human meniscal attachments obtained from pull to failure tests (LA – lateral anterior, LP – lateral posterior, MA – medial anterior, MP – medial posterior). Average ± standard deviations. No statistical differences were found between the outer, middle, and inner sections of the meniscal attachments (p>0.05)
Overall Failure Material Properties | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
ULTIMATE STRAIN (%) |
||||||||
Meniscus (ME)^ |
Midsubstance (MI)^ |
Bony Insertion (BO) |
|||||||
OUTER |
MIDDLE |
INNER |
OUTER |
MIDDLE |
INNER |
OUTER |
MIDDLE |
INNER |
|
LA# | 9.84 ± 3.31 | 16.50 ± 3.71 | 4.23 ± 3.61 | 12.40 ± 3.40 | 5.55 ± 0.25 | 8.43 ± 3.62 | 36.20 ± 26.6 | 47.64 ± 34.48 | 42.07 ± 23.40 |
LP | 16.58 ± 10.75 | 9.80 ± 2.27 | 10.84 ± 8.70 | 8.77 ± 5.59 | 33.22 ± 42.30 | 9.28 ± 4.67 | 28.00 ± 17.25 | 27.58 ± 19.43 | 27.45 ± 12.16 |
MA# | 9.56 ± 5.34 | 7.90 ± 5.90 | 10.72 ± 9.19 | 9.49 ± 4.65 | 17.04 ± 9.82 | 9.35 ± 7.86 | 26.96 ± 15.68 | 42.18 ± 25.47 | 39.19 ± 23.24 |
MP |
7.57 ± 4.62 |
6.96 ± 3.50 |
12.02 ± 12.76 |
NA |
NA |
NA |
13.47 ± 5.95 |
17.38 ± 9.36 |
19.42 ± 12.01 |
| |||||||||
MEAN |
11.35 ± 7.24 |
10.71 ± 5.52 |
9.00 ± 7.98 |
10.32 ± 4.48 |
19.95 ± 28.74 |
8.99 ± 5.02 |
27.57 ± 18.88 |
35.51 ± 25.78 |
33.43 ± 19.61 |
| |||||||||
LATERAL1 | 13.21 ± 8.30 | 13.52 ± 4.61 | 7.53 ± 7.18 | 10.78 ± 4.60 | 20.92 ± 33.28 | 8.86 ± 3.96 | 32.10 ± 21.61 | 37.61 ± 28.42 | 34.76 ± 19.19 |
MEDIAL | 8.71 ± 4.74 | 7.55 ± 4.86 | 11.09 ± 9.16 | 9.49 ± 4.65 | 17.04 ± 9.82 | 9.35 ± 7.86 | 21.90 ± 14.12 | 32.88 ± 23.68 | 31.78 ± 21.32 |
ANTERIOR2 | 9.72 ± 4.02 | 12.20 ± 6.49 | 7.47 ± 7.42 | 10.94 ± 4.13 | 10.47 ± 8.36 | 8.84 ± 5.47 | 31.58 ± 21.19 | 44.91 ± 28.72 | 40.63 ± 22.04 |
POSTERIOR | 13.20 ± 9.69 | 8.58 ± 3.00 | 11.17 ± 8.83 | 8.77 ± 5.60 | 33.22 ± 42.30 | 9.28 ± 4.67 | 22.55 ± 15.38 | 23.75 ± 16.39 | 24.44 ± 11.96 |
Significantly different from BO
Significantly different from MP
Significantly different from MEDIAL
Significantly different from POSTERIOR
n=5