An early experience of the use of dual mobility cup uncemented total hip arhroplasty in young patients with avascular necrosis of the femoral head

• Published in: Journal of clinical orthopaedics and trauma 2022-10, Vol.33, p.101995-101995, Article 101995
• Main Authors: Londhe, Sanjay Bhalchandra, Khot, Rahul, Shah, Ravi Vinod, Desouza, Clevio
• Format: Article
• Language: English
• Subjects: Arthroplasty; AVN; Dual mobility; Femoral head; THA
• ISSN: 0976-5662; 2213-3445
• DOI: 10.1016/j.jcot.2022.101995

THA (Total hip arthroplasty) in advanced grade (grade 4) avascular necrosis (AVN) is a challenge to the treating surgeon as it affects young patients who have high functional demands and increased dislocation risk. The aim of the study was to evaluate the efficacy, survivorship, and dislocation rate of uncemented dual mobility cups (DMC) in advanced grade IV AVN young patients. Retrospective cohort study involving 204 DMC THA for advanced grade IV AVN from January 2013 to December 2015. The sample size of the study was estimated to be 188 hips with an α error of 0.05 and β error of 0.2. Inclusion criterion was patients less than 55 years of age with advanced grade IV AVN. Patients >55 years of age, patients diagnosed with primary osteoarthritis of the hip and hip fracture were excluded from the study. 172 patients (32 with bilateral & 140 with unilateral affection) with 204 DMC THA were evaluated clinically by Harris Hip Score (HHS) and radiologically at a follow up of 60 months. P value