Journal Article
Research Support, Non-U.S. Gov't
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Balance control is impaired in adults with sickle cell anaemia.

BACKGROUND: Musculoskeletal involvement and cerebrovascular disease are common in sickle cell anaemia (SCA). These changes are potentially important factors that modify the control of balance in this population.

OBJECTIVE: To assess balance control in adults with SCA and investigate the associations among balance, posture and muscle function.

METHODS: Twenty neurologically intact (i.e. without previous episodes of overt stroke or transient ischaemic attack) adults with SCA and 18 controls were evaluated. All participants underwent static balance measurement through stabilometry, postural evaluation through photogrammetry and assessment of muscle function through handgrip and respiratory muscle strength.

RESULTS: Compared to the controls, the adults with SCA exhibited greater displacement of the centre of mass, particularly in the mediolateral direction. Moreover, the adults with SCA exhibited greater postural deviations for the following variables: angles of the right and left hip, horizontal asymmetry of the scapula in relation to T3, angles of the right and left leg-heel and horizontal alignment of the pelvis. Handgrip strength, respiratory muscle strength and haemoglobin (Hb) levels were significantly correlated with postural balance measurements. Significant correlations between balance and posture were only observed between the variables of balance and the postural parameters that involved the angulations calculated from the vertical alignment of the pelvis, hip and ankle.

CONCLUSIONS: Neurologically intact adults with SCA exhibit damage in static balance, particularly in the mediolateral direction. These patients present postural deviations due to changes in the hip and ankle joints. In addition, balance control is related to posture, Hb level and muscle function.

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