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. 2013 Jun;8(3):256–268.

Table 1.

Case 1 knee flexor muscle and tendon morphology.

Structure Parameter Injured Limb Uninjured Limb
Pre‐Surgery Post‐Return to Sports Follow‐Up Pre‐Surgery Post‐Return to Sports Follow‐Up
Semitendinosus
Muscle Volume 271.83 115.75 56.08 314.08 296.28 301.47
Peak cross‐sectional area 15.74 11.88 4.84 17.49 16.13 14.90
Length 36.30 24.85 22.86 34.57 33.80 35.70
Tendon Volume 1.31 1.24 0.00 1.29 1.59 3.68
Peak cross‐sectional area 0.16 0.13 0.00 0.19 0.19 0.35
Length 27.63 8.14 0.00 27.19 18.23 17.80
Gracilis
Muscle Volume 96.35 71.40 43.76 87.16 71.40 86.94
Peak cross‐sectional area 4.83 3.19 2.88 3.80 3.19 3.60
Length 33.27 24.72 19.00 33.36 33.73 32.49
Tendon Volume 1.15 0.61 0.00 1.33 1.30 2.74
Peak cross‐sectional area 0.16 0.10 0.00 0.22 0.19 0.40
Length 11.35 8.20 0.00 12.21 11.86 14.52
Semimembranosus
Muscle Volume 173.64 165.86 215.65 198.83 177.85 187.76
Peak cross‐sectional area 9.77 9.49 12.15 11.46 10.75 11.08
Biceps femoris (long)
Muscle Volume 181.98 192.59 224.73 182.25 189.10 203.40
Peak cross‐sectional area 10.94 11.78 13.94 12.06 12.25 12.30
Biceps femoris (short)
Muscle Volume 104.95 116.19 142.36 106.11 106.92 112.89
Peak cross‐sectional area 7.46 8.06 8.34 7.45 7.60 8.12
Sartorius
Muscle Volume 133.15 133.59 182.54 142.12 132.21 170.41
Peak cross‐sectional area 3.87 4.30 4.93 4.35 4.03 4.48
Hamstrings+Gracilis+Sartorius
Muscle Volume 961.90 773.83 865.12 1030.55 973.76 1062.87
Peak cross‐sectional area 52.61 49.01 47.08 56.61 53.95 54.48

Units: volume (cm3), peak cross‐sectional area (cm2), and length (cm).