Obesity is No Longer a Risk Factor for Dislocation After Total Hip Arthroplasty with a Double-mobility Cup

Overview

Journal Int Orthop

Specialty Orthopedics

Date 2014 Dec 31

PMID 25548126

Citations 16

Authors

Paul Maisongrosse

Benoit Lepage

Etienne Cavaignac

Regis Pailhe

Nicolas Reina

Philippe Chiron

Jean-Michel Laffosse

Affiliations

Soon will be listed here.

Abstract

Purpose: Dislocation is one of the most feared complications after total hip arthroplasty (THA). This risk is greater in obese patients compared with the general population.

Methods: We performed a retrospective cohort study in which the main objective was to compare the dislocation rate between obese patients (BMI > 30 kg/m²) (exposed group) and non-obese patients (BMI ≤ 30 kg/m²) (unexposed group) after primary THA with a double-mobility acetabular cup. The patients had a minimum follow-up of 24 months.

Results: The 'obese' group consisted of 77 THA cases and the 'non-obese' group of 425 cases; the two groups were similar in terms of age, gender and ASA score. After a mean follow-up of 58.3 ± 27 months (range 27-159), 43 patients had been lost to follow-up and 56 had died; the two groups had similar mean values. One patient in the 'obese' group had suffered a dislocation due to a fall 16 months after the THA. One patient in the 'non-obese' group had suffered a dislocation after a periprosthetic femur fracture with stem subsidence two months after the THA procedure. Both patients underwent surgical revision where the double-mobility cup was preserved; there were no further dislocation events as of the last follow-up. The dislocation rate in the two groups was similar (1.3 % versus 0.23%, p > 0.05). No cases of loosening were found. Revisions were secondary to deep or superficial infection (n = 22), periprosthetic femur fracture (n = 10) or haematoma (n = 3).

Conclusion: These findings imply that double-mobility cups are a reliable way of reducing the risk of dislocation in obese patients after primary THA.

Citing Articles

Ten to 15-Year Outcomes of Monoblock Uncemented Dual Mobility Cups: Excellent Survival Rate and Outcome in Primary Total Hip Arthroplasty.

Batailler C, Lustig S, Balot E, Farizon F, Fessy M, Philippot R JB JS Open Access. 2025; 10(1).

PMID: 39991112 PMC: 11841846. DOI: 10.2106/JBJS.OA.24.00074.

Dual-Mobility Total Hip Arthroplasty in Patients with Obesity, Morbid Obesity and Super-Obesity: Medium-Term Outcomes of a Series of 180 Hips.

Sharma A, Verghese S, Bindumadhavan S, Killampalli J, Killampalli V Indian J Orthop. 2024; 59(1):77-83.

PMID: 39735880 PMC: 11680527. DOI: 10.1007/s43465-024-01287-0.

Experience of an anatomic femoral stem in a UK orthopaedic centre beyond 20 years of follow-up.

Turnbull G, Blacklock C, Akhtar A, Dunstan E, Ballantyne J Eur J Orthop Surg Traumatol. 2024; 34(4):2155-2162.

PMID: 38565783 PMC: 11101503. DOI: 10.1007/s00590-024-03901-1.

Comparing dislocation rates by approach following elective primary dual mobility total hip arthroplasty: a systematic review.

Butler J, Stegelmann S, Butler J, Bullock M, Miller R J Orthop Surg Res. 2023; 18(1):226.

PMID: 36945061 PMC: 10032016. DOI: 10.1186/s13018-023-03724-6.

No dislocation and low complication rate for a modern dual mobility cup with pre-impacted femoral head in primary hip replacement: A consecutive series of 175 hips at minimum 5-year follow-up.

Foissey C, Batailler C, Rajput V, Premkumar A, Servien E, Lustig S SICOT J. 2023; 9:1.

PMID: 36648274 PMC: 9878999. DOI: 10.1051/sicotj/2022050.

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