The Impact of Obesity on Short Stem Total Hip Arthroplasty

Obesity and it's Impact on Subsidence and Clinical Outcomes After Short Stem Total Hip

The purpose of this study is to review the impact of obesity on subsidence and clinical outcome after short stem total hip arthroplasty.

Short stem total hip arthroplasty (THA) has gained popularity due to its bone-sparing technique, but its outcomes in obese patients remain uncertain.

While studies on the mid-term outcome in a general patient cohort provide excellent results in terms of the clinical and radiological outcome as well as the complication rate of short stem THA, data on its use in obese patients is still rare and not sufficiently conclusive. Some studies have found no evidence of increased subsidence in obese patients, while other studies have shown contrary trends.

In this context, the aim of this study was to investigate the relationship between BMI, postoperative subsidence and clinical outcomes in the setting of short stem THA.

Inclusion Criteria:

1. patients who underwent primary short stem hip arthroplasty with Mathys Optimys short stem between 01.01.2018 and 31.12.2020
2. availability of preoperative and postoperative radiographs for assessment of subsidence
3. a minimum BMI of 30kg/m2 for the obese group
4. a minimum follow-up of 24 months.

Exclusion Criteria:

1. former surgeries of the hip in question
2. incomplete clinical data
3. incomplete radiological data