Arcuate popliteal ligament

The arcuate popliteal ligament is an Y-shaped extracapsular ligament of the knee.^{[1][2]: 138} It is formed as a thickening of the posterior fibres of the joint capsule of the knee.^[2]: 138 It reinforces the knee joint capsule inferolaterally.^[3]

Arcuate popliteal ligament
Details
From	Head of the fibula
Identifiers
Latin	ligamentum popliteum arcuatum
TA98	A03.6.08.014
TA2	1900
FMA	44596
Anatomical terminology [edit on Wikidata]

Anatomy

From its fibular attachment, the ligament extends superomedially over the tendon of the popliteus muscle, spreading out^[3] superficial to the posterior aspect of the tendon.^{[3][2]: 134}

Attachments

Its inferior attachment is at the posterior aspect of the head of the fibula.^{[1][2]: 138 [3]}

It has two superior attachments:

• The medial part of the ligament extends superficial to the tendon of popliteus muscle^[2]: 138 to attach at the posterior part of the intercondylar area of tibia.^{[3][2]: 138}
• The lateral part forms a separate band that extends to the posterior part of^[3] the lateral condyle of femur^{[3][2]: 138} alongside the tendon of popliteus muscle.^[2]: 138