606 Surgical planning assistance for femoral stem of total hip replacement with 2 steps force sense presentation based on amount of protrusion of stem from boundaries of cortical Bone

2015 ◽  
Vol 2015 (0) ◽  
pp. 174-175
Author(s):  
Keiji ONOE ◽  
Yoshiyuki KAGIYAMA ◽  
Yasumi ITO ◽  
Yasuhiro KURODA ◽  
Osamu OSHIRO
Keyword(s):  
Cortical Bone ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Surgical Planning ◽  
Femoral Stem ◽  
Total Hip ◽  
Force Sense

scholarly journals Precision and accuracy of pre-surgical planning of non-cemented total hip replacement with calibrated digital images and acetates

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Luis Fernando Useche Gómez ◽  
Hernando Gaitán-Lee ◽  
María Alejandra Duarte ◽  
Patrick Dennis Halley ◽  
Alejandro Romero Jaramillo ◽  
...  
Keyword(s):  
Total Hip Replacement ◽  
Gold Standard ◽  
Hip Replacement ◽  
Surgical Planning ◽  
Femoral Stem ◽  
Accurate Estimation ◽  
Hybrid Technique ◽  
Level Of Evidence ◽  
Total Hip ◽  
Replacement Procedure

Abstract Background When approaching a joint replacement procedure, pre-surgical planning is essential to predict an accurate estimation of implant size and position. There are currently two methods to achieve it, analog and digital. The present study aims to demonstrate how the hybrid technique is accurate and precise for pre-surgical planning in a non-cemented total hip replacement. Methods Concordance-type study is used against a gold standard, as well as inter- and intra-observer consistency evaluation of two orthopedic surgeons and two orthopedic surgery residents. Accuracy was calculated with the intra-class correlation coefficient (ICC). Afterwards, the same calculation was done considering a margin of error with one size more and one less. Results Thirty-eight patients were included in the study: 19 women and 19 men. Twenty-two prostheses (57.89%) were right-sided and 16 were left (42.11%). Twelve prostheses (31.57%) were Stryker and 26 Johnson & Johnson (68.43%). Acetabular cup correlation compared with the gold standard was moderate: ICC reported 0.45 (95% CI, 0.15–0.76). When adjusted by ± 1 size, ICC was 0.48 (95% CI, 0.18–0.79). On the other hand, results from the femoral stem reported ICC 0.85 (95% CI, 0.07–0.98). When adjusted by ± 1 size, ICC was 0.86 (95% CI, 0.06–0.99). Conclusions Hybrid templating is a reliable substitute for analog or digital planning. It is quick, inexpensive, accurate, and better results are observed in the femoral component regardless the level of expertise of the evaluator. Level of evidence Grade IV

scholarly journals Precision and Accuracy of the Pre-Surgical Planning of Non-Cemented Total Hip Replacement With Calibrated Digital Images and Acetates

2021 ◽  
Author(s):  
Luis Fernando Useche ◽  
Hernando Gaitan-Lee ◽  
María Alejandra Duarte Tovar ◽  
Patrick Dennis Halley ◽  
Alejandro Romero Jaramillo ◽  
...  
Keyword(s):  
Total Hip Replacement ◽  
Gold Standard ◽  
Hip Replacement ◽  
Surgical Planning ◽  
Intraclass Correlation ◽  
Femoral Stem ◽  
Hybrid Technique ◽  
Level Of Evidence ◽  
Digital Templating ◽  
Total Hip

Abstract BackgroundPre-surgical planning in joint replacements allows an estimation of the size and position of the potential implant before surgery. Currently, there are two methods to estimate the size and position: Analogue and digital. This study aims to demonstrate that the hybrid technique is accurate and precise in pre-surgical planning of non-cemented Total Hip Replacement. MethodsConcordance-type study against a gold standard, as well as inter and intraobserver consistency evaluation of two orthopedic surgeons and two orthopedic surgery residents. Accuracy was calculated with the intraclass correlation coefficient (ICC), afterwards, the same calculation was done taking into account a margin of error of 1 size above and 1 size below. ResultsThirty-eight patients were included in the study. 19 women and 19 men. 22 prostheses (57.89%) were right-lateralized and 16 left (42.11%). 12 prostheses (31.57%) were Stryker and 26 Johnson & Johnson (68.43%) Acetabular cup correlation compared with the gold standard was moderate: ICC reported 0.45 (95% CI, 0.15-0.76). When adjusted by +/-1 size ICC was 0.48 (95% CI, 0.18-0.79). On the other hand, results from the femoral stem reported: ICC 0.85 (95% CI, 0.07-0.98). When adjusted by +/-1 size ICC was 0.86 (95% CI, 0.06-0.99). ConclusionsHybrid templating is a reliable substitute for analog or digital templating. It is quick and inexpensive; better results are observed in the femoral component. The level of expertise of the evaluator did not affect the accuracy of the planning. Level of evidence: Grade IV

Variation in femoral anteversion in patients requiring total hip replacement

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.

Complications and radiographic findings following cemented total hip replacement

2006 ◽  
Vol 19 (03) ◽  
pp. 172-179 ◽  
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.

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

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.

P29. Cortical bone remodelling in response to total hip replacement

Bone ◽  
1992 ◽  
Vol 13 (1) ◽  
pp. 114-114
Author(s):  
PR Jones ◽  
ML Porter ◽  
DWL Hukins
Keyword(s):  
Cortical Bone ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Bone Remodelling ◽  
Total Hip

scholarly journals Femoral stem wear in cemented total hip replacement

2008 ◽  
Vol 222 (5) ◽  
pp. 583-592 ◽  
Author(s):  
H-Y Zhang ◽  
L Blunt ◽  
X-Q Jiang ◽  
L Brown ◽  
S Barrans ◽  
...  
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Femoral Stem ◽  
Total Hip
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