The study aims to assess the adequacy of a set of clinical and laboratory investigations for identifying the osteosarcopenia status in patients undergoing a hip replacement for a fragility fracture of the femoral neck. The control group will consist of patients undergoing a hip replacement for osteoarthritis, as the decrease in muscle function and bone quality is less severe in this condition than in osteoporosis.
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Acceptability of the SARC-F questionnaire
Timeframe: Within 24 hours of admission
Frequency of positive SARC-F questionnaire in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Within 24 hours of admission
Presence of histological features of osteoporotic bone in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Through study completion, an average of 1 year.
Presence of histological features of muscle atrophy in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Through study completion, an average of 1 year.
Myostatin serum levels in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Through study completion, an average of 1 year.
Insulin-like growth factor 1 (IGF-1) serum levels in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Through study completion, an average of 1 year.
Acceptability of the Frequency Food Questionnaire
Timeframe: Within 24 hours of admission
Frequency of intake of the different food categories in cases (fragility fractures) and controls (osteoarthritis)
Timeframe: Within 24 hours of admission