Do frailty scores predict outcome after proximal femoral replacement for musculoskeletal tumours: a case series?

Purpose: Frailty has a negative independent relationship with morbidity and mortality. A frail individual has low resilience and adaptive capacity to stressors with unfavourable consequences. The relationship between musculoskeletal tumour patients undergoing surgery and frailty is underrepresented in literature. This study's questions are; what is the prevalence of frailty in patients undergoing surgery for musculoskeletal tumours; what is the correlation between frailty and survival plus secondary outcome measures including length of hospital stay (LOS); can clinicians use frailty scoring to support preoperative decision-making?

Methods: Patients over 60 years of age undergoing proximal femoral replacement for musculoskeletal tumours were included and classified as fit, vulnerable or frail using the modified frailty index (mFI), Rockwood and American Society of Anaesthesiologist's physical status classification (ASA) grading systems. Correlation with outcomes including survival and (LOS) was determined.

Results: 85 patients were identified of mean age 72.6 years. Median follow-up was 18.9 months. The prevalence of frailty ranged between 55 to 76% and the overall median survival in frail groups were 19.8 months with all scoring systems used. Frail patients classified by the Rockwood score had a greater LOS and a trend to reduced survival.

Conclusions: There is a high prevalence of frailty in this cohort and frailty scores should be considered when planning surgery as part of holistic care. Moreover, a median survival greater than 18 months in frail patients supports the decision to offer surgery which may positively impact quality of life. Further research to identify the relationship between frailty and outcomes in musculoskeletal tumour patients is needed.

Level Of Evidence: IV, Retrospective Case Series.