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Updated: Jan 25, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
Published on: February 27, 2018
Patients With Multiple Sclerosis are at Increased Risk for Postoperative Complications Following Total Hip and Knee
Nicole Durig Quinlan1, Dennis Q Chen1, Brian C Werner1
1Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA.
Background:
Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease affecting the central nervous system. Patients with MS are living longer due to improved medical therapy and thus the demand for arthroplasty in this population will increase. The objective of this study is to evaluate MS as a potential risk factor for postoperative complications following total hip arthroplasty (THA) and total knee arthroplasty (TKA).
Methods:
Patients with a diagnosis of MS who underwent THA or TKA from 2005 to 2014 were identified in a national insurance database. Rates of death, hospital readmission, emergency room visits, infection, revision, and dislocation (for THA) or stiffness (for TKA) were calculated, in addition to cost and length of stay. MS patients were then compared to a matched control population.
Results:
In total, 3360 patients who underwent THA and 6436 patients who underwent TKA with a history of MS were identified and compared with 10:1 matched control cohorts without MS. The MS group for both TKA and THA had significantly higher incidences of hospital readmission (THA odds ratio [OR] 2.05, P < .001; TKA OR 1.99, P < .001), emergency room visits (THA OR 1.41, P < .001; TKA OR 1.66, P < .001), and infection (THA OR 1.35, P = .001; TKA OR 1.32, P < .001). MS patients who underwent THA had significantly higher rates of revision (OR 1.35, P = .001) and dislocation (OR 1.52, P < .001). Diagnosis of MS was also associated with significantly higher costs and hospital length of stay for patients undergoing both TKA and THA.
Conclusion:
A diagnosis of MS is associated with increased risk of postoperative complications and higher costs following both THA and TKA.
Insights
Multiple sclerosis (MS) patients undergoing hip or knee replacement surgery face higher risks of complications, readmissions, and infections. This indicates MS is a significant risk factor, leading to increased healthcare costs and longer hospital stays.
Area of Science:
- Orthopedic Surgery
- Neurology
- Public Health
Background:
- Multiple sclerosis (MS) is a chronic central nervous system inflammatory demyelinating disease.
- Improved therapies are increasing the lifespan of MS patients, leading to a greater need for joint replacement surgeries.
- Evaluating MS as a risk factor for postoperative complications after arthroplasty is crucial.
Purpose of the Study:
- To assess the impact of multiple sclerosis on postoperative complications following total hip arthroplasty (THA) and total knee arthroplasty (TKA).
Main Methods:
- A national insurance database was used to identify patients with MS who underwent THA or TKA between 2005 and 2014.
- Outcomes analyzed included death, readmission, emergency room visits, infection, revision, dislocation/stiffness, cost, and length of stay.
- Patients with MS were compared to a 10:1 matched control group without MS.
Main Results:
- Patients with MS undergoing THA or TKA showed significantly higher rates of hospital readmission, emergency room visits, and infection compared to controls.
- MS patients undergoing THA had increased rates of revision and dislocation.
- Diagnosis of MS was linked to significantly higher costs and longer hospital stays for both THA and TKA procedures.
Conclusions:
- Multiple sclerosis is associated with an elevated risk of postoperative complications after both total hip and total knee arthroplasty.
- MS diagnosis leads to increased healthcare utilization and costs following arthroplasty procedures.
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