Mid-Term Survivorship of a Novel Constrained Acetabular Device

Crawford, David A.; Adams, Joanne B.; Brown, Kenneth D.; Morris, Michael J.; Berend, Keith R.; Lombardi, Adolph V.

doi:10.1016/j.arth.2019.09.049

Cited by 9 publications

(3 citation statements)

References 35 publications

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“…The Freedom CL used mainly in revision cases, demonstrated 74.8% overall survival and 83.6% survival for aseptic loosening at a mean of 7 years follow-up. 20 Short-term results of TCLs showed an overall survival rate ranging from 86.2% to 98.8% up to 4.6 years. 7,21,25,[30][31][32] The tripolar design showed favourable outcomes with dislocation rates of 6% at 10 years.…”

Section: Discussionmentioning

confidence: 97%

“…Several studies correlated the results with the indications of using CLs. 19,20 The careful patient selection and counselling were considered crucial in minimising complications post constrained THA. 9,21 Finnish Arthroplasty Register data demonstrated similar 8-year survivorship, excluding infection between patients receiving conventional or CL for primary THA.…”

Section: Discussionmentioning

confidence: 99%

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Constrained liners revisited: favourable mid-term results in patients with high-risk of dislocation: technical considerations for the optimal outcome

et al. 2021

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Background: The outcomes of constrained liners (CLs) in total hip arthroplasty (THA) remain inconclusive. We evaluated the mid-term performance of CLs in a consecutive series of high-risk dislocation patients undergoing primary or revision THA performed by a single surgeon. The survival, dislocation rate, complications, and functional patients’ scores were assessed. Surgical tips to enhance outcomes were reviewed. Methods: 45 patients who received the Trident Tripolar CL between 2010 to 2019 were retrospectively evaluated from Arthroplasty Registry Thessaloniki. There were 17 primary and 28 revision THAs. The primary indications for using CL were severe abductor insufficiency or comorbidities, increasing the dislocation risk in primary, and recurrent dislocation or abductor insufficiency in revision THAs. The mean patient’s age was 68.5 (±14.5) years, and the mean follow-up 3.81 (±1.66) years. Results: There were 2 dislocations and 1 deep infection in the revision group. For any reason, the cumulative 6-year survival rate was 93.3%, 100% for primary, and 89.3% for revision THAs. The mean overall CL survival was 76.3 months for any reason (95% CI, 68.1–84.5) and 80.5 months for dislocation (95% CI, 75.8–85.2). The mean postoperative functional scores were significantly improved ( p < 0.001) at the latest follow-up. Conclusions: CLs can provide hip stability and durable fixation in selected low-demand patients with high-risk for dislocation after primary and revision THA at mid-term follow-up. Careful patient selection and the refined surgical technique aiming at the neutral liner position and considering the high CLs’ offset relative to stem-neck impingement are necessary to maximise outcomes.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Constrained liners revisited: favourable mid-term results in patients with high-risk of dislocation: technical considerations for the optimal outcome

et al. 2021

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“…In one of the few studies available on the Freedom constrained liner system 105 patients were treated with the Freedom liner: dislocation failure occurred in 0% of primary preventive hip replacements, 7.7% of preventive revisions, and 4.8% of patients treated for a history of dislocation, and a 5.7% mechanical failure rate was noted overall at 2.5-year follow-up [ 34 ]. Another study of 177 hips treated with the Freedom liner showed dislocations in 6.2% of hips and revision for aseptic acetabular loosening at 7.1-year follow-up in 7.3% [ 35 ].…”

Section: Discussionmentioning

confidence: 99%

Dual mobility acetabular construct with freedom constrained liner for treatment of recurrent dislocations after total hip arthroplasty: A case report and literature review

Onochi

Fukui

Kaneuji

et al. 2020

International Journal of Surgery Case Reports

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Highlights Dual-mobility bearings improve stability in total hip arthroplasty (THA) but may fail to prevent postoperative dislocation. Dry revision with a compatible constrained liner system can provide an effective salvage option for instability after THA. The unique G7 constrained liner system offers good short-term stability and range of motion.

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Complications of Total Hip Arthroplasty

Tokgoz

2022

Total Hip Arthroplasty

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Mid-Term Survivorship of a Novel Constrained Acetabular Device

Cited by 9 publications

References 35 publications

Constrained liners revisited: favourable mid-term results in patients with high-risk of dislocation: technical considerations for the optimal outcome

Constrained liners revisited: favourable mid-term results in patients with high-risk of dislocation: technical considerations for the optimal outcome

Dual mobility acetabular construct with freedom constrained liner for treatment of recurrent dislocations after total hip arthroplasty: A case report and literature review

Complications of Total Hip Arthroplasty

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