Handgrip strength is associated with length of stay and functional outcomes at 1-year follow up in fragility hip fracture patients

Abstract

Background/Purpose Fragility hip fracture (FHF) is the most prevalent fragility fracture, causing deterioration in ambulatory ability and disability. Early detection of patients who are at risk of prolonged hospitalization and functional decline after FHF is crucial as this facilitates post-operative management and healthcare resources allocation. Handgrip strength (HGS) is an easily-administered and cost-effective tool to assess whole body strength. The objectives of this study were to examine the relationship between pre-operative HGS, length of stay (LOS) and functional outcomes at 1-year follow up in patients with FHF in Hong Kong. Methods Patients aged 65 years old or above who were admitted to a local acute hospital from April 2017 to March 2020 due to FHF that were treated operatively, and subsequently attended the multidisciplinary fragility fracture clinic at 1-year follow up were evaluated. HGS measured at pre-operative physiotherapy initial assessment, post-fracture total LOS, Modified Functional Ambulation Classification (MFAC) and Elderly Mobility Scale (EMS) at 1-year follow up were retrieved for analysis. Correlation between HGS and LOS was analyzed using Pearson's correlation coefficient. Correlations between HGS and MFAC, and HGS and EMS were analyzed using Spearman's rank correlation coefficient. Results One hundred and nineteen patients (mean age = 80.8 ± 7.3 years) (33 males, 86 females) were evaluated. Statistical significant negative correlation between HGS and LOS was found ( r = -0.245, p = 0.007), implying that the lower the HGS, the longer the period of hospitalization. HGS also showed statistical significant positive correlation with MFAC ( r = 0.358, p < 0.001) and EMS ( r = 0.507, p < 0.001), suggesting that the greater the HGS, the better the functional outcomes after 1 year. In short, pre-operative HGS measured by physiotherapists was shown to be associated with LOS and functional outcomes at 1-year follow up. Conclusion HGS is significantly associated with patient's LOS, MFAC and EMS after FHF. HGS is an easily-administered and cost-effective tool to facilitate frontline practitioners to determine and stratify patients’ rehabilitation potential and subsequently establish customized rehabilitation and discharge plan, such as intensive training, caregiver education and potential prediction of discharge destination. Key Messages HGS is significantly associated with patient's LOS, MFAC and EMS after FHF. HGS is an easily-administered and cost-effective tool to facilitate frontline practitioners to determine and stratify patients’ rehabilitation potential and subsequently establish customized rehabilitation and discharge plan.