Lower Limb Flashcards
what are normal compartment pressures?
0-8mmHg
what compartment pressure would indicate compartment syndrome?
> 30mmHg or within 30mmHg of patients diastolic blood pressure
what is the delta pressure?
Delta pressure = Diastolic BP - intercompartment Pressure
what delta pressure is indicative of compartment syndrome?
<30mmgHg
where do you place the anterolateral incision in a fasciotomy?
2cm lateral to the lateral border of the tibia
where do you place the posteromedial incision in a fasciotomy?
1-2cm medial to the medial border of the tibia
which artery lies in the posterior compartment?
Posterior tibial a
which nerve lies in the superficial posterior compartment?
Sural Nerve
which artery lies in the anterior compartment?
Anterior tibial a
which artery lies in the lateral compartment?
Fibula artery
peroneus tertius lies in what compartment?
anterior
the nucleus pulposus makes up which part of the intervertebral disc?
central
helps distribute pressure
what makes up the outer portion of an intervertebral disc?
annulus fibrosus
multiple laminae of fibrocartilage - withstand compressive forces
which peripheral nerves make up the caudal equina?
L2 - S5
which structures are at risk in the anterolateral approach to the hip?
Femoral artery, vein, nerve
what is the inter muscular plane used in the anterolateral approach to the hip?
Tensor fascia lata + gluteus medius
what is the inter muscular plane in the lateral approach to the hip?
Gluteus medius + vastus lateralis
what structures are at risk in the lateral approach to the hip?
Femoral n
superior gluteal nerve
what is the inter muscular plane used in the posterior approach to the hip?
Gluteus maximus along its fibres
which structures are at risk in the posterior approach to the hip?
sciatic nerve
inferior gluteal nerve
superior gluteal nerve + artery
Femoral vessels
which structures are at risk in the lateral approach to the ankle?
Sural nerve
Superficial peroneal nerve
short saphenous vein
where does the superficial peroneal nerve cross from the lateral to anterior compartment of the leg?
10cm proximal to tip of fibula
what position should the patient be in for anterolateral approach to the hip?
Lateral Decubitus Position
where is the incision for the anterolateral approach to the hip?
2.5 distal and posterior to ASIS - centred over GT - over proximal shaft of femur