Total hip replacement and NICE

Utting, M. R.; Lankester, B.J.A.; Smith, Lydia; Spencer, RF

doi:10.1136/bmj.330.7487.318

Cited by 11 publications

(6 citation statements)

References 1 publication

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“…8 10 larvae ml -1 would result in better growth performance and survival rate [28]. In the present study, the giant clam larvae performed poorer growth and survival rate at density of 7 and 9 larvae mL -1 compared to those ones at 3 and 5 larvae mL -1 , while the two later densities showed comparable in growth and survival rate.…”

Section: Discussionsupporting

confidence: 43%

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Effects of microalgae and stocking density on growth and survival rate of giant clam (Tridacna squamosa Lamarck, 1819) larvae

Bay,

Anh Tuan,

Van Minh

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The present study aimed to evaluate the impact of microalgae mixture and stocking density on growth and survival rate of giant clam (Tridacna squamosa) at the veliger stage. In the first experiment, giant clam larvae of the D-stage were reared in the conical fiberglass tanks and fed with combinations of microalgae, including Chaetoceros muelleri and Isochrysis galbana (1:1), and C. muelleri, I. galbana and Nannochloropsis oculata, (1:1:1). One group of giant clam larvae without feeding was used as a control. The experiment was lasted for 7 days, until the Pediveliger stage with six replicate tanks. In the second experiment, the larvae (1 day post hatched, DPH) were reared at densities of 3, 5, 7 and 9 larvae mL-1 (so-called D3, D5, D7 and D9, respectively) for a period of 7 days. Each density was randomly assigned to 6 replicate tanks. The larvae were fed once a day with a mixture of C. muelleri, I. galbana and N. oculata, (5,000 cells/ml each type of algae). At 4DPH, extracted zooxanthelle (Symbiodinium microadriaticum) was seeded into the giant clam larvae at the concentration of 5,000cells/ml once a day. The results showed that larvae fed with C. muelleri, I. galbana and N. oculata (1:1:1) obtained the largest shell length (217.5 ± 3.1 µm), specific growth rate (SGR) 7.18 ± 0.34 (mean±SD) and the survival rate (31.5% ± 1.6%) (P<0,05). In addition, rearing densities significantly affected growth in shell length, SGR and survival rate in giant clam larvae. Of which, the larvae at D3 gained the highest shell length, SGR and survival rate. Meanwhile, the larvae at D9 had the lowest shell length, SGR and survival rate. There was no significant difference in larval survival rate between D3 and D5. Therefore, it is suggested that in the hatchery giant clam larvae reared at 5 larvae mL-1 in order to improve productivity.

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Section: Discussionsupporting

confidence: 43%

“…Where V1 is the volume of the stocking tank (litre); N1 is required cell density (cells/ml); N2 is cell density of harvested algae from biomass culture (cells/ml) (Utting et al, 1991).…”

Section: * Larval Developmentmentioning

confidence: 99%

Effects of microalgae and stocking density on growth and survival rate of giant clam (Tridacna squamosa Lamarck, 1819) larvae

Bay,

Anh Tuan,

Van Minh

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The survival rate at 10 years of these prostheses was 91.1%, in accordance with the indications of the National Institute for Health and Care Excellence (NICE). 12 In 10 years, 4 patients underwent a revision surgery, 3 patients for an ARMD diagnosed by ultrasound and demonstrated by MRI and postoperative histological exam. None of the patients who underwent revision surgery had blood ion levels higher than 7 µg/L.…”

Section: Discussionmentioning

confidence: 99%

Metal ion trend in patients with metal-on-metal total hip arthroplasty: a 10-year prospective study

et al. 2018

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Introduction: There have been reported adverse reactions in patients with large head metal-on-metal hip arthroplasty, therefore metal particle debris are a cause for concern. The aim of this study was to evaluate the release trend of metal ions and the correlated variables. Methods: 54 patients were prospectively enrolled into the study from 2004 to 2006. All patients had 36-mm metal head, Pinnacle acetabular component, Summit stem and Ultamet CoCr alloy liner (Depuy Inc.), and underwent clinical and radiological management. The haematic concentration of Cr-Co at 0, 6, 12, 24, 60 and 120 months after the implantation was analysed in a sub-cohort of 34 patients. Results: 10-year revision rate for each case was 8.9%. The average concentration of Co at 120 months was 3.12 μg/L (median 2.20) with 53% values >2 μg/L and 1 >7 μg/L. After 6 months the median levels of Cr and Co were higher than time 0 (p < 0.0001); no significant differences were found between 6 and 24 months; while Co had significant increase between 60 and 120 months (p = 0.002). Overweight, University of California at Los Angeles (UCLA) >9 and <50 years old patients have significantly higher circulating metal ions. Discussion: This is 1 of the few prospective studies on the argument. The revision rate is conforming to records. Our data shows ionic concentration is not predictive of revision or adverse reaction to metals. We described a 3-phase trend for Co probably due to the loss of integrity of the surfaces.

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“…The choice of implant undoubtedly is an important factor in the survival of THA with NICE criteria being understood as a useful tool 23 . The overall survivorship for ABG I prosthesis was very much below 90 % in this study raising the question how quickly the failure was detected.…”

Section: Discussionmentioning

confidence: 99%

Poor Survival of Abg I Hip Prosthesis in Younger Patients

Gallo¹,

Langová²,

Havranek³

et al. 2008

Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub

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Background: Hydroxyapatite coated (HAC) hip implants have been used in clinical practice for more than two decades. However, the majority of studies have reported only intermediate term outcomes that are not reliable for predicting long-term behavior in all implants. The aim of this study was to determine the performance of HAC total hip arthroplasty in younger patients over a 10-year follow-up period. Methods and Results:This was an observational retrospective study of a 137 consecutive hips with the ABG I prosthesis. Of these, 128 were available for the last investigation. Median duration of follow-up was 10.9 years. The mean age at time of index surgery was 46±6.7 years. Probability of implant survival was estimated using the Kaplan-Meier method. The overall 12-year cumulative survival was 0.55 (95% CI, 0.443-0.659). Periprosthetic osteolysis (57 %) was the most frequent reason for failure followed by aseptic loosening (28 %). When only aseptic loosening was included in the analysis, the same fi gures for cup and stem were 0.873 (95% CI, 0.808-0.938) and 0.992 (95% CI, 0.976-1.0), respectively. Patients with a smaller cup size were those at high risk for revision due to wear-related complications (odds ratio, OR=4.3; 95% CI, 1.734-10.555).Conclusion: This study reports one of the poorest 12-year survivorship data for cementless acetabular component in the literature. The main reason for premature failure was osteolysis, strongly related to high wear rate of polyethylene.

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Total hip replacement and NICE

Cited by 11 publications

References 1 publication

Effects of microalgae and stocking density on growth and survival rate of giant clam (Tridacna squamosa Lamarck, 1819) larvae

Effects of microalgae and stocking density on growth and survival rate of giant clam (Tridacna squamosa Lamarck, 1819) larvae

Metal ion trend in patients with metal-on-metal total hip arthroplasty: a 10-year prospective study

Poor Survival of Abg I Hip Prosthesis in Younger Patients

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