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Muscle dysfunction in elderly individuals with hip fracture.
M R Gonzalez-Crespo1, J Arenas, J J Gomez-Reino
1Pathology and Orthopaedic Surgery Department, Hospital Doce de Octubre, Madrid, Spain.
The Journal of Rheumatology
|October 21, 1999
Summary
Elderly hip fracture patients exhibit muscle metabolic changes, including abnormal carnitine levels and respiratory chain defects, particularly in those over 85. These alterations may contribute to neuromuscular issues and could be treatable.
Area of Science:
- Gerontology
- Muscle Physiology
- Biochemistry
Background:
- Hip fractures are common in the elderly, leading to significant morbidity.
- Muscle metabolism plays a crucial role in maintaining physical function and recovery in older adults.
Purpose of the Study:
- To investigate alterations in muscle metabolism in elderly individuals who have sustained a hip fracture.
- To compare metabolic markers between hip fracture patients and healthy elderly controls.
Main Methods:
- Muscle tissue samples were obtained from 54 elderly patients (over 65) with hip fractures and 40 healthy controls.
- Analysis included measurements of free carnitine, carnitine esters, and respiratory chain enzyme activity.
Main Results:
- A high prevalence (85%) of abnormal carnitine distribution or respiratory chain defects was observed in patients over 85 years old.
- Muscle metabolic alterations were identified in elderly patients with hip fractures compared to controls.
Conclusions:
- Elderly patients with hip fractures present with significant muscle metabolic disturbances.
- These metabolic changes may underlie neuromuscular impairment and suggest potential therapeutic targets.