Bone loss in chronic hemiplegia: a longitudinal cohort study

Area of Science:

• Neurology
• Orthopedics
• Rehabilitation Medicine

Background:

• Hemiplegia following stroke can lead to long-term health complications.
• Bone mineral density changes are a concern in stroke survivors, but long-term data is limited.

Purpose of the Study:

• To assess long-term bone mineral density (BMD) changes in hemiplegic stroke patients.
• To identify factors associated with bone loss in this population.

Main Methods:

• A longitudinal cohort study of 57 first-stroke patients with chronic hemiplegia (>12 months).
• Evaluated bone loss, body composition, lean mass, and fat mass at two time points (16-month interval).
• Compared BMD between paretic and non-paretic limbs and analyzed influencing factors.

Main Results:

• Significantly greater bone loss observed in paretic forearms compared to non-paretic forearms (p=0.001).
• Bone loss was more pronounced in patients with more recent strokes (p=0.015).
• Femoral bone loss was associated with anticoagulant/anticonvulsant use (p=0.025) and increased spasticity (p=0.040).

Conclusions:

• Hemiplegic stroke patients exhibit progressive bone loss, predominantly in the arms.
• Densitometric monitoring of the paretic arm is recommended for stroke survivors.
• Identifying determinants like medication and spasticity can guide interventions for bone loss management.