Healthcare and Medicine Reference
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head of the fibula onto the tibial condyle and blending
into the broad sweep of the inferior fibers of the iliotibial
tract (ITT) (Fig. 5.8A and B).
The ITT begins its upward journey here, starting from
the lateral tibial condyle as a narrow, thick, and strong
The peroneals (fibulari)
The depth of the peroneus longus tendon on the under-
side of the foot and the brevity of the peroneus brevis
make it impossible to accomplish anything useful with
the LL below the malleolus, so we begin with the lateral
crural compartment (Fig. 5.7). Peroneus longus and
brevis blend together in this compartment, which is
bounded by septa on either side. The anterior septum
can be found on a line that runs roughly between the
lateral malleolus and the front of the head of the fibula.
The posterior septum, between the peroneals and the
soleus, can be traced from just in front of the Achilles
tendon up to just behind the fibular head. (See the pal-
pation section below for more detail.) These septa and
the overlying crural fascia are good places to open to
relieve all forms of compartment syndrome.
As well as direct work to open these septa, the pero-
neal myofascial units themselves can be lengthened and
softened by cross-fiber friction: spreading the tissue of
this compartment both to the anterior and the posterior
of the lateral line with fingertips or knuckles, while the
client moves through the dorsiflexion-plantarflexion
range (DVD ref: Lateral Line, 12:51-19:12).
The peroneals are often used posturally to prevent
dorsiflexion, as in standing, and can create excessive
eversion when they are too short.
The thigh
Although the peroneus brevis originates on the lower
half of the fibula, the longus (and thus the fascial com-
partment) and this train of the LL continue on up to the
fibular head. The obvious, straight-ahead connection
from this point is to continue on to the biceps femoris,
and this myofascial meridian connection will be explored
in the chapter on the Spiral Line (Ch. 6). The continua-
tion of the LL, however, involves a different switch,
going slightly anterior onto the anterior ligament of the
Fig. 5.8 (A) The Lateral Line goes from the lateral compartment
via the anterior ligament of the head of the fibula to the bottom of
the iliotibial tract. (B) In fact, however, the tissues of the lower end
of the iliotibial tract spread to join to the tibia, the fibula, and the
fascia of the lateral crural compartment.
Fig. 5.7 The lateral compartment consists of the deeper fibularis
brevis and the overlying fibularis longus. This compartment is
bound by septa on both anterior and posterior aspects, separating
it from the anterior compartment (SFL) and the superficial posterior
compartment (SBL) respectively.
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