Table 1.
Subject characteristics and anatomic observations
| Age (years) | Gender | Side | Number of tendon layers | Superficial layer | Intermediate components | Deep components | VLO | VMO | MPFL | LPFL |
|---|---|---|---|---|---|---|---|---|---|---|
| 82 | F | L | 3 | RF | VL, VM | VI | X | X | ||
| 82 | F | R | 2 | RF, VM, VL | VI | X | ||||
| 99 | F | R | 3 | RF | VL, VM | VI | X | X | X | |
| 92 | F | L | 3 | RF, VM, VL | VL, VM | VI | ||||
| 90 | M | R | 3 | RF, VM, VL | VL, VM | Vi | X | |||
| 82 | M | R | 3 | RF | RF, VL, VM | VM, VI | X | X | ||
| 82 | F | L | 3 | RF, VM, VL | VL, VM | VI | ||||
| 86 | F | L | 2 | RF, VM, VL | VI | X | ||||
| 78 | M | R | 3 | RF, VM, VL | VL, VM | Vi | X | |||
| 86 | F | L | 3 | RF, VM, VI | VL | VI | ||||
| 56 | F | L | 2 | RF, VM, VL | VI | X | ||||
| 56* | F | R | 2 | RF, VM, VL | VI | |||||
| 80* | M | R | 2 | RF, VM, VL, VI | VI | X | ||||
| 99 | F | R | 3 | RF, VM | VL and (VM and VI) | VI | X | X | ||
| 85 | M | R | 4 | RF, VM | Layer 2, VL; layer 3, VM | VI | X | X | ||
| 92 | M | R | 4 | RF, VM | Layer 2, VL; layer 3, VM | VI | X | |||
| 87 | F | L | 3 | RF w/ VM joining distally | VL and deep fibers of VM | VI | X | X | ||
| 91 | F | R | 4 | RF | Layer 2, VL (superficial), VM; layer 3, VL (deep) | VI | X | |||
| 91 | F | L | 3 | RF | VL, VM | VI | X | |||
| 100 | F | L | 2 | RF, VM, VL | VM, VI | X | X |
* Observations on the presence or absence of the MPFL could not be made because of previous dissection of these two specimens; VLO, oblique head of vastus lateralis; VMO, oblique head of the vastus medialis; MPFL, medial patellofemoral ligament; LPFL, lateral patellofemoral ligament; F, female; M, male; L, left; R, right; RF, rectus femoris; VM, vastus medialis; VL, vastus lateralis; VI, vastus intermedius.