Long-term follow-up of a low profile, coated, press-fit cup: the trabeculae oriented pattern (T.O.P.) acetabular system

Mosconi, Lorenzo; Cavagnaro, Luca; Zanirato, Andrea; Quarto, Emanuele; Baracchini, Maddalena Lontaro; Formica, Matteo

doi:10.1007/s00590-021-02917-1

Cited by 3 publications

(1 citation statement)

References 27 publications

(33 reference statements)

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“…An accurate sizing and alignment of the stem, the removal of the posterior osteophyte of the femoral neck, the use of low-profile acetabular cups and a modified lateral hip approach, 34 which reduces gluteal insufficiency, are key factors to reduce the risk of implant instability.…”

Section: Discussionmentioning

confidence: 99%

A 24-year single-centre experience with Collum Femoris Preserving stem: clinical and radiological results in young and elderly population

et al. 2022

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Objective: The primary aim was to evaluate the long-term follow-up of Collum Femoris Preserving (CFP) stem, specifically focusing on stem survivorship, complications, as well as on clinical and radiological results. The secondary study objective is an age-based sub-analysis (<65 years vs. ⩾65 years) of long-term results. Materials and methods: We performed a retrospective analysis of patients who underwent CFP implantation between 1997 and 2009. A total of 311 patients (342 hips) were included with a mean follow-up of 15.8 ± 2.2 (range 11–24) years. 2 age groups were analysed: Group-Y (age <65) and Group-E (age ⩾65). Group-Y included 182 hips (mean follow-up 16.3 ± 4.2 years), whereas Group-E included 160 hips (mean follow-up 15.5 ± 3.7 years). Clinical (HHS, OHS and VAS) and radiological data were obtained at final follow-up. Any complications, reoperations, prosthetic components revisions and stem revisions were analysed. Results: According to HSS score, 95% of patients reported excellent/good results (95.6% Group-Y vs. 94.4% Group-E) with an overall stem survival rate of 93.3% (94% Group-Y vs. 92.5% Group-E; p = 0.37). Overall, 87% of stem revisions were performed with primary stems. The rate of prosthetic components revision was 9.9 % (9.9% in Group-Y vs. 10% in Group-E; p = 1). The reoperation rate was 10.8% (11.5% in Group-Y vs. 10.0% in Group-E; p = 0.73). Conclusions: The CFP stem provides good clinical and radiological long-term results with low rate of complications in both young and elderly patients. No significant difference in stem revision and reoperation rates was observed between the 2 groups. Both in elderly and young patients, CFP stem allows revisions to be performed with primary stems.

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Section: Discussionmentioning

confidence: 99%

A 24-year single-centre experience with Collum Femoris Preserving stem: clinical and radiological results in young and elderly population

et al. 2022

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Minimum 20-year follow-up of a press-fit acetabular cup in cementless total hip replacement in young patients

Lunz,

Von Falkenhayn,

Jaeger

et al. 2023

ActaO

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Purpose: We aimed to determine the minimum 20-year survival rates of a cementless press-fit cup in young patients.Patients and methods: This is a retrospective, single-center, multi-surgeon cohort study investigating the minimum 20-year clinical and radiological outcome of the first 121 consecutive total hip replacements (THRs) using a cementless, press-fit cup (Allofit, Zimmer, Warsaw, IN, USA) performed between 1999 and 2001. 28-mm metal-on-metal (MoM) and ceramic-on-conventionally not highly crosslinked polyethylene (CoP) bearings were used in 71% and 28%, respectively. Median patient age at surgery was 52 (range 21–60) years. Kaplan–Meier survival analysis was conducted for different endpoints.Results: The 22-year survival rate for the endpoint aseptic cup or inlay revision was 94% (95% confidence interval [CI] 87–96) and 99% (CI 94–100) for aseptic cup loosening. 20 patients (21 THRs; 17%) had died and 5 (5 THRs; 4%) were lost to follow-up. No THR showed evidence of radiographic cup loosening. Osteolysis was observed in 40% of THRs with MoM and 77% with CoP bearings. 88% of THRs with CoP bearings showed significant polyethylene wear.Conclusion: The investigated cementless press-fit cup, which is still in clinical use today, showed excellent long-term survival rates in patients under the age of 60 years at surgery. However, osteolysis due to polyethylene and metal wear was frequently observed and is a matter of concern in the third decade after surgery.

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Acetabular custom implants in the management of severe acetabular bone defects in revision total hip arthroplasty: a systematic review of the literature

ZANIRATO,

QUARTO,

COCCARELLO

et al. 2024

Minerva Orthop

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Long-term follow-up of a low profile, coated, press-fit cup: the trabeculae oriented pattern (T.O.P.) acetabular system

Cited by 3 publications

References 27 publications

A 24-year single-centre experience with Collum Femoris Preserving stem: clinical and radiological results in young and elderly population

A 24-year single-centre experience with Collum Femoris Preserving stem: clinical and radiological results in young and elderly population

Minimum 20-year follow-up of a press-fit acetabular cup in cementless total hip replacement in young patients

Acetabular custom implants in the management of severe acetabular bone defects in revision total hip arthroplasty: a systematic review of the literature

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