Iliopectineal arch
Encyclopedia
The Iliopectineal arch is a thickened band of fused iliac fascia
and psoas fascia passing from the posterior aspect of the inguinal ligament
anteriorly across the front of the femoral nerve
to attach to the iliopubic eminence of the hip bone posteriorly. The iliopectinal arch thus forms a septum which subdivides the space deep to the inguinal ligament into a lateral muscular lacuna
and a medial vascular lacuna
. When a psoas minor muscle
is present, its tendon of insertion blends with the iliopectineal arch
It is sometimes transected in treatment of femoral nerve
entrapment.
Iliac fascia
The iliac fascia is a fascia in the pelvic area of the human body.It has the following connections:* laterally, to the whole length of the inner lip of the iliac crest....
and psoas fascia passing from the posterior aspect of the inguinal ligament
Inguinal ligament
The inguinal ligament is a band running from the pubic tubercle to the anterior superior iliac spine. Its anatomy is very important for operating on hernia patients.-Anatomy:...
anteriorly across the front of the femoral nerve
Femoral nerve
The femoral nerve, the largest branch of the lumbar plexus, arises from the dorsal divisions of the ventral rami of the second, third, and fourth lumbar nerves...
to attach to the iliopubic eminence of the hip bone posteriorly. The iliopectinal arch thus forms a septum which subdivides the space deep to the inguinal ligament into a lateral muscular lacuna
Muscular lacuna
The Muscular lacuna is the lateral compartment beneath the inguinal ligament, for the passage of the iliopsoas muscle and femoral nerve; it is separated by the iliopectineal arch from the vascular lacuna....
and a medial vascular lacuna
Vascular lacuna
The vascular lacuna is the medial compartment beneath the inguinal ligament, for the passage to the femoral vessels, lymph node, and femoral branch of the genitofemoral nerve. Medial to lateral these are the: Rosenmuller lymph node, femoral vein, femoral artery, and gem oral branch of...
. When a psoas minor muscle
Psoas minor muscle
The psoas minor is a long, slender skeletal muscle which, when present, is located in front of the psoas major muscle. This muscle does not exist in about half the human population.-Course:...
is present, its tendon of insertion blends with the iliopectineal arch
It is sometimes transected in treatment of femoral nerve
Femoral nerve
The femoral nerve, the largest branch of the lumbar plexus, arises from the dorsal divisions of the ventral rami of the second, third, and fourth lumbar nerves...
entrapment.