Results of extensively coated femoral stem in revision hip replacement

Metallic taper junctions of modular total hip replacement implants are analysed for corrosion damage using visual scoring based on different granularity levels that span from analysing the taper holistically to dividing the taper into several distinct zones. This study aims to objectively explore the spatial distribution and the severity of corrosion damage onto the surface of metallic stem tapers. An ordinal logistic regression model was developed to find the odds of receiving a higher score at eight distinct zones of 137 retrieved stem tapers. A method to find the order of damage severity across the eight zones is introduced based on an overall test of statistical significance. The findings show that corrosion at the stem tapers occurred more commonly in the distal region in comparison with the proximal region. Also, the medial distal zone was found to possess the most severe corrosion damage among all the studied eight zones.

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Variation in femoral anteversion in patients requiring total hip replacement

Hip International ◽

10.1177/1120700019848088 ◽

2019 ◽

Vol 30 (3) ◽

pp. 281-287

Author(s):

Jim W Pierrepont ◽

Ed Marel ◽

Jonathan V Baré ◽

Leonard R Walter ◽

Catherine Z Stambouzou ◽

...

Keyword(s):

Total Hip Replacement ◽

Hip Replacement ◽

Femoral Stem ◽

Femoral Anteversion ◽

Patient Specific ◽

3 Dimensional ◽

Total Hip ◽

Age Related ◽

Gender And Age ◽

Implant Alignment

Background: Optimal implant alignment is important for total hip replacement (THR) longevity. Femoral stem anteversion is influenced by the native femoral anteversion. Knowing a patient’s femoral morphology is therefore important when planning optimal THR alignment. We investigated variation in femoral anteversion across a patient population requiring THR. Methods: Preoperatively, native femoral neck anteversion was measured from 3-dimensional CT reconstructions in 1215 patients. Results: The median femoral anteversion was 14.4° (−27.1–54.5°, IQR 7.4–20.9°). There were significant gender differences (males 12.7°, females 16.0°; p < 0.0001). Femoral anteversion in males decreased significantly with increasing age. 14% of patients had extreme anteversion (<0° or >30°). Conclusions: This is the largest series investigating native femoral anteversion in a THR population. Patient variation was large and was similar to published findings of a non-THR population. Gender and age-related differences were observed. Native femoral anteversion is patient-specific and should be considered when planning THR.

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Pneumatic broaching may prevent massive stem subsidence in femoral revision hip replacement

Interactive Surgery ◽

10.1007/s11610-008-0070-x ◽

2008 ◽

Vol 3 (2) ◽

pp. 81-87

Author(s):

H. Hourlier ◽

P. Fennema

Keyword(s):

Hip Replacement ◽

Femoral Revision ◽

Stem Subsidence ◽

Revision Hip Replacement

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Allograft Bone in Major Revision Hip Replacement Surgery

Bone Implant Grafting ◽

10.1007/978-1-4471-1934-0_12 ◽

1992 ◽

pp. 77-90

Author(s):

B. Loty ◽

M. Postel

Keyword(s):

Hip Replacement ◽

Allograft Bone ◽

Replacement Surgery ◽

Hip Replacement Surgery ◽

Major Revision ◽

Revision Hip Replacement

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Biomechanics of Revision Hip Replacement

Revision Total Hip Arthroplasty ◽

10.1007/978-1-4612-1406-9_15 ◽

1999 ◽

pp. 135-141

Author(s):

Philip C. Noble

Keyword(s):

Hip Replacement ◽

Revision Hip Replacement

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Complications and radiographic findings following cemented total hip replacement

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632994 ◽

2006 ◽

Vol 19 (03) ◽

pp. 172-179 ◽

Cited By ~ 42

Author(s):

R. S. Gilley ◽

F. S. Shofer ◽

A. S. Kapatkin ◽

M. S. Bergh

Keyword(s):

Total Hip Replacement ◽

Revision Surgery ◽

Hip Replacement ◽

Femoral Stem ◽

Short Term ◽

Radiographic Appearance ◽

Radiographic Findings ◽

Total Hip ◽

Technical Errors ◽

Radiographic Changes

SummaryCemented total hip replacement (cTHR) is commonly performed to treat intractable coxofemoral pain in dogs. While owners generally perceive a good outcome after the procedure, the longevity of the implant may be limited by complications such as infection and aseptic loosening. The objective of this retrospective study was to identify the prevalence of complications and radiographic changes following cTHR, and to identify factors that may predispose to a need for revision surgery. Medical records and radiographs from 97 dogs that underwent cTHR were evaluated for signalment, preoperative degree of osteoarthritis, technical errors, intra-operative culture results, and the post-operative radiographic appearance of the implant. The complications occurring in the intra-operative and short-term (<eight week) periods, and the radiographic appearance of the implant in the long-term (>eight week) time period were recorded. Mean (±SD) follow-up time was 1.1 ± 1.6 years (range: 0–7.7 years). Seven dogs had a short-term complication and a revision surgery was performed in eleven dogs. Osseous or cement changes were radiographically detectable in the majority of cTHR. Eccentric positioning of the femoral stem and the presence of radiolucent lines at the femoral cement-bone interface were positively associated with the occurrence of revision surgery. The clinical significance of the periprosthetic radiographic changes is unclear and further investigation is warranted.

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Short-Term Clinical Assessment of Hip Hemi-Arthroplasty in 11 Dogs

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0041-1735317 ◽

2021 ◽

Author(s):

Renée Huggard ◽

Grace Wicks ◽

Gordon Corfield

Keyword(s):

Total Hip Replacement ◽

Hip Replacement ◽

Femoral Stem ◽

Salvage Procedure ◽

Short Term ◽

Total Hip ◽

Pelvic Radiography ◽

Hemi Arthroplasty

Abstract Objective The aim of this study was to assess the short-term clinical outcome in dogs following a hip hemi-arthroplasty for the treatment of primary pathological disorders of the hip and as a salvage procedure following failure of the cup component of a total hip replacement. Materials and Methods Medical records of dogs that had a unilateral hip hemi-arthroplasty performed between 2015 and 2020 were reviewed. Data collected included follow-up orthopaedic examinations performed at 0, 2, 8 and 52 weeks postoperatively, pelvic radiography at 0, 8 and 52 weeks postoperatively and an owner questionnaire (Helsinki chronic pain index [HCPI]). Results Eleven unilateral hip hemi-arthroplasty procedures were identified. The median age at time of surgery was 3.6 years (8 months–10 years) and the median follow-up time was 13 months (range: 2 months–3 years). The HCPI for all dogs at follow-up was median 8 ± 7.30 (range: 5–25). Total HCPI was < 12 for 7/10 dogs and ≥ 12 for 3 dogs. Pelvic radiographs at 1 year confirmed osteointergration of the femoral stem implant and no evidence of implant subsidence or progression of osteoarthritis. However, there was some evidence of mild lucency of the acetabular bed around the prosthetic femoral head and mild peri-acetabular sclerosis in four cases. Conclusion Hip hemi-arthroplasty provides a clinically acceptable treatment for disabling disease of the coxofemoral joint with 10/11 patients achieving acceptable short-term clinical function. Long-term assessment of the hip hemi-arthroplasty and comparison with total hip replacement is indicated.

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