CHRONIC
DISEASE AND PHYSICAL ACTIVITY
THE
STUDY OF CERVICAL CURVATURE
IN FORWARD HEAD POSTURE (FHP)
Ahanjan
S, Behpour
N, Keyvanlou F
Kermanshah Razi University of
Iran
Since the neck supports head
weight, it's abnormal positioning not only results in spoiled posture
but also may be responsible for physical disabilities, abnormalities,
and injuries. For the study of cervical curvature in forward head
posture, some of Razi university's students selected randomly and
screening with the use of PPV software, 14 students with forward head
posture (with mean of 22 years old and 60 kg weight) and 14 healthy
students (with mean of 22.8 years old and 62 kg weight) selected as
subjects and with informed consent participated in following phase of
research. In this descriptive study of cervical curvature, cervical
spines radio graphed from lateral view and then evaluated for anterior
head translation (AHT), cervical lordosis (C2-C7), and superior
cervical curvature (C1-C2).
Mean differences of healthy and
FHP subject's variables analyzed with independent t-test. For the
analyzing of variables relationships, Pearson's coefficient of
correlation used at p<0.05.
Results showed that:
1.There were significant differences between cervical
lordosis, anterior head translation, and amounts of overload on
cervical spines among two groups. Differences of superior cervical
curvature's amount were not significant.
2. FHP had
significant relationships with AHT and cervical lordosis. A significant
relationship also existed between AHT and amounts of overload on
cervical spines. FHP and cervical curvatures were not significantly
related. The weak relationship of cervical curvature and lordosis were
not significant. The results revealed that extreme forward head
position may cause a S-form curvature which is due to decreased
inferior and increased superior cervical spine curvature. In this
situation, in fact, inferior muscles of neck's anterior are shortened
and superior portion of muscles is stretched. At the other hand,
posterior inferior muscles of neck are stretched and in the extreme
cases, superior muscles of neck are shortened. With these results it
can be postulated that the forward head posture can cause a decrease in
normal lordosis and occurrence of cervical kyphosis.
Key
words: anterior
head translation, cervical curvature, deformity, cervical spine.
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