Table 1.
Classification (types) of pes anserinus.
| Classification | Classes | Number (20) |
Total (100%) |
|---|---|---|---|
| Based on tendinous formation | Type I (SAT + GRT + STT) | 1 | 5% |
| Type II (SAT + GRT + STT+ aSTT + SMT + TCL) | 1 | 5% | |
| Type III (SAT + GRT + STT + aSTT) | 13 | 65% | |
| Type IV (SAT + GRT + STT + aSTT + SMT) | 3 | 15% | |
| Type V (SAT + STT + GRT + aSAT + SMT) | 1 | 5% | |
| Type VI (SAT + GRT + STT + aGRT + aSTT) | 1 | 5% | |
|
| |||
| Based on union of the tendons | Nonconvergence (side-by-side termination) | 2 | 10% |
| Early convergence (superior to medial tibial condyle) | 1 | 5% | |
| Late convergence (inferior to medial tibial condyle) | 17 | 85% | |
|
| |||
| Based on point of insertion | Superior anteromedial tibia | 0 | 0% |
| Medial border of tibia | 0 | 0% | |
| Superior anteromedial bone + medial border of tibia | 18 | 90% | |
| Superior anteromedial bone + medial border of tibia + fascia cruris | 2 | 10% | |
(i) SAT: sartorius muscle tendon.
(ii) GRT: gracilis muscle tendon.
(iii) STT: semitendinosus muscle tendon.
(iv) SMT: semimembranosus muscle tendon.
(v) aSAT: accessory sartorius muscle tendon.
(vi) aSTT: accessory semitendinosus muscle tendon.
(vii) aGRT: accessory gracilis muscle tendon.