Aim: Modified-Krishnan’s frailty index (FI) is an FI calculation method developed by Krishnan et al. in 2014. This study aimed to compare the effectiveness and correlation of the FIs from Krishnan and the Canadian study of health and aging (CSHA) in predicting postoperative outcomes of elderly patients with hip fracture. Methods: Based on clinical follow-up and observation, we utilized these two instruments to predict 3-month mortality, hip function, and recovery of daily activities. The area under the curve (AUC) and the Pearson correlation coefficient were used to compare the two scales’ predictive validities for postoperative outcomes. Results: A total of 130 patients were included; 67% female and mean age 77.5 ± 8.5 years. The AUCs of modified-Krishnan’s FI (AUC = 0.856; 95% confidence interval (CI) = 0.767–0.945) and the CSHA-FI (AUC = 0.793; 95% CI = 0.652–0.934) were used to compare the effectiveness in predicting patient mortality. The optimal predictive scores were 0.335 and 0.28, respectively. The Pearson correlation analysis showed that the modified-Krishnan’s FI correlated with the Japanese Orthopaedic Association hip score (pain, activity, walking ability, and ability for daily living; R = −0.249, p = 0.005), while the CSHA-FI was not correlated ( R = −0.125, p = 0.170). The modified-Krishnan’s FI ( R = −0.415, p < 0.001) and the CSHA-FI ( R = −0.332, p < 0.001) were both significantly correlated with the functional recovery scale score. Conclusions: The modified-Krishnan’s FI and the CSHA-FI were effective in the prediction of postoperative mortality. But the modified-Krishnan’s FI was more consistently associated with the recovery of hip function and daily activities at 3 months after the operation than that of the CSHA-FI. The modified-Krishnan’s FI was more suitable to utilize for risk stratification, identifying deficits, and predicting recovery capacity in hip fracture patients.

Objective. To study the effect of preoperative rehabilitation training on the rehabilitation of patients after total knee arthroplasty. Methods. A total of 120 patients diagnosed with knee osteoarthritis and undergoing total knee arthroplasty were selected and divided into experimental group and control group according to a random number table, with 60 cases in each group. The control group only carried out routine clinical nursing before the operation, and the experimental group used the formulated preoperative rehabilitation training method based on the control group for training. By comparing the visual analogue score (VAS), keen society score (KSS), postoperative time to get out of bed for the first time, patient satisfaction, and other related indicators between the two groups of patients, the recovery of keen joint function of patients after surgery was evaluated. Results. The visual analogue scale (VAS) of the experimental group was significantly lower than that of the experimental group at three days after operation. The keen society score (KSS) of the experimental group was significantly better than that of the control group at three days after surgery and one month after surgery. The time to get out of bed for the first time after operation in the experimental group (44.93 ± 13.63) was significantly less than that in the control group (78.33 ± 13.52). The patient satisfaction of the experimental group was significantly higher than that of the control group (88.30 ± 3.61). The above statistical results were all p < 0.05 of the two groups, and the differences were statistically significant. Conclusion. Preoperative rehabilitation training can significantly reduce the pain of patients after knee replacement, improve the functional state of knee joints, shorten the time to get out of bed for the first time after surgery, and win the best recovery opportunity, which can better improve patient satisfaction in hospitalization and improve medical care services level.