scholarly journals Clinical and radiographic evaluation of subsidence in two femoral stem models for a total hip replacement in dogs

2021 ◽  
Author(s):  
BW Minto ◽  
LMI Diogo ◽  
CR de Andrade ◽  
WS Santos Junior ◽  
LG de Faria ◽  
...  
Keyword(s):  
Hip Replacement ◽  
First Generation ◽  
Femoral Stem ◽  
Femoral Fractures ◽  
Radiographic Evaluation ◽  
Generation System ◽  
Total Hip ◽  
Cementless Total Hip Arthroplasty ◽  
Successful Technique ◽  
Clinical Problems

Canine cementless total hip arthroplasty (THA) is a successful technique for the management of hip arthrosis; however, serious potential complications, such as femoral fractures and subsidence of the femoral stem, can occur. To evaluate the effect of two femoral stem designs in reducing subsidence in dogs, twenty-four hips from twenty-one dogs undergoing THA were assessed. The twenty-four arthroplasties were divided into two experimental groups: G1 with a first generation, and G2, which is the second generation, system were used. All the dogs were clinically and radiographically evaluated immediately post-operatively and at 30 (M1) and 120 days post-operatively (M2). Three of ten arthroplasties in the G1 system had subsidence and six of fourteen had subsidence in the G2 system. Both systems are effective for management of hip arthrosis. The varus positions with the sub-optimal filling were not related to the subsidence. The two stem designs both showed some resistance to subsidence, but clinical problems were not identified in any case.

scholarly journals RADIOGRAPHIC EVALUATION OF EARLY OUTCOME AFTER TWO TYPES OF CEMENTLESS HIP ARTHROPLASTY

2019 ◽  
Vol 36 ◽  
pp. 41-49
Author(s):  
Jędrzej Roman Tschurl ◽  
Maciej Kasprzyk ◽  
Patryk Kasongo ◽  
Tomasz Jopek
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Hip Replacement ◽  
Femoral Stem ◽  
Position Angle ◽  
Radiographic Evaluation ◽  
Good Reliability ◽  
Total Hip ◽  
Medical Histories ◽  
Stem Position

Introduction Total Hip Arthroplasty is one of the most common orthopaedic procedures. Its outcome is assessed by radiographic evaluation. Two principal radiographic parameters are cup inclination and stem position angle. Aim The study aimed to compare radiological outcomes of two total hip arthroplasty techniques: Alloclassic Zweymüller versus Corail Pinnacle endoprostheses. Material and methods Medical histories of 345 patients who had a hip replacement between 2007 and 2017 were reviewed. Patients with primary total hip arthroplasty with both of mentioned systems were included in the research. Seven observers individually evaluated the radiological images of the 67 endoprostheses (39 Alloclassic Zweymüller and 26 Corail Pinnacle). The cup inclination and the stem position angle were measured using MB-Ruler programme. Results There was no statistical difference (p > 0.338) in cup inclination angle between Alloclassic Zweymüller and Pinnacle cups, with the angle ranging from 31.01° to 58.80° (45.20° on average) and from 30.61° to 59.1° (43.60° on average), respectively. Femoral stem position did not differ between both types of endoprosthesis (p > 0.932), ranging from −1.05° to 7.87° (3.09° on average) for Alloclassic Zweymüller and 0.35° to 7.79° (3.06° on average) for Corail Pinnacle stem. ICC (Intraclass Coefficient Correlation) was estimated and their 95% confident intervals were calculated for cup inclination and stem position showing good reliability of cup inclination measurements. Conclusions Both types of endoprostheses presented similar radiological outcomes. Cup inclination can be used by non-experienced medical staff to reliably assess the postoperative radiograms. Keywords: cementless hip replacement, radiological outcomes, imaging.

Treatment Outcomes for Periprosthetic Femoral Fractures in Cementless Press-Fit Total Hip Replacement

2020 ◽  
Vol 33 (05) ◽  
pp. 370-376
Author(s):  
Isobel C. Monotti ◽  
Christopher A. Preston ◽  
Scott W. Kidd
Keyword(s):  
Total Hip Replacement ◽  
Hip Replacement ◽  
Plate Fixation ◽  
Femoral Stem ◽  
Femoral Fractures ◽  
Total Hip ◽  
Press Fit ◽  
Periprosthetic Femoral Fractures ◽  
Bone Segment ◽  
Cementless Total Hip Replacement

Abstract Objective The aim of this study was to report outcomes in dogs with periprosthetic femoral fractures associated with a press-fit cementless femoral total hip replacement implant. Materials and Methods Electronic medical records and digital radiographs were used to identify dogs with periprosthetic femoral fractures associated with press-fit cementless total hip replacement. Data collected included signalment, weight, time of fracture, cause of fracture, presence of intra-operative fissure, fracture type, repair technique, and clinical and radiographic outcomes. Long-term patient outcome was assessed by communication with owners or referring veterinarians. Results Twenty-eight dogs with femoral fracture repair associated with cementless press-fit total hip replacement were identified. Eight of the fractures occurred intraoperatively and 20 occurred at a median of 2 days postoperatively. An oblique or spiral configuration was noted in 19 cases and 15 occurred at the distal end of the femoral stem (type B), with thirteen type B1, one type B2 and one type B3 fractures. Fractures were repaired with non-locking (18/28) or locking-plate fixation (10/28). Cerclage wire was applied around the plate and proximal bone segment in 17/28 dogs. Major complications occurred in 7/28 cases (five deep infection, two mechanical failures). Bone healing was noted in 21/23 cases, for which follow-up radiographic interpretation was available. Return to function was complete in 17 cases, acceptable in 8 cases and unacceptable in 3 cases. Conclusions While cementless total hip replacement periprosthetic femoral fractures can be successfully repaired with lateral plate fixation, the risk of infection appears to be high.

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.

Systematic Review of Radiological Analysis of Total Hip Replacement via Direct Anterior Approach in Comparison to Other Approaches – Study Protocol

2020 ◽  
Author(s):  
Bartosz Maciąg ◽  
Kuba Radzimowski ◽  
Piotr Stępiński ◽  
Jakub Szymczak ◽  
Tomasz Albrewczyński ◽  
...  
Keyword(s):  
Systematic Review ◽  
Systematic Reviews ◽  
Hip Replacement ◽  
Anterior Approach ◽  
Femoral Stem ◽  
Direct Anterior Approach ◽  
Controlled Trials ◽  
Total Hip ◽  
Randomized Controlled ◽  
Radiological Analysis

Abstract Background Total hip arthroplasty (THR) is considered as the most effective available method of treatment of end-stage hip osteoarthritis (OA). This surgery can be performed via many different approaches. One of the newly developed technique is called direct anterior approach (DAA). It gains popularity and recognition as the least traumatic to the soft tissues, thus quickening rehabilitation and improving joint stability in the early postoperative period. There are no systematic reviews covering this subject in terms of potential differences in radiological prosthesis placement, and while there is still unsatisfactory evidence concerning long-term outcomes of DAA, such review may prove useful in the debate. The objective of our study was to systematically collect and review available data from randomized-controlled trials (RCTs) regarding radiographic assessment of prosthesis placement after total hip arthroplasty using direct anterior approach compared to other common approaches.Methods A systematic review of randomized controlled trials (RCTs) will be conducted. SciFinder, Scopus, ScienceDirect, PubMed, Embase, Clinical Key and The Cochrane Library databases will be searched without restriction to date up to June 2020. Primary outcomes will include measurements related with the radiological analysis of trials comparing use of DAA to other approaches used for THR, containing at least two of the following: femoral stem alignment, mean radiographic cup inclination, mean radiographic cup anteversion, mean radiographic cup abduction, position in Lewinnek's safe zone. Study selection will follow the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, and the methodological appraisal of the studies will be assessed by the Cochrane Risk-of-Bias Tool for RCTs. Discussion This systematic review will provide missing information regarding influence of differences between DAA and other surgical approaches in total hip replacement on prosthesis implants placement in case of femoral stem and cup. This may result in improving knowledge and awareness of surgeons, improving patients satisfaction and functional outcome and lowering the risk of hip dislocations and other complications. Trial registration International Registration of Systematic reviews (PROSPERO) number CRD42019122675

Intraoperative Femoral Fractures Associated With Cementless Total Hip Arthroplasty

Orthopedics ◽  
1989 ◽  
Vol 12 (2) ◽  
pp. 231-239 ◽  
Author(s):  
Thomas H Mallory ◽  
Thomas J Kraus ◽  
Bradley K Vaughn
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Femoral Fractures ◽  
Total Hip ◽  
Cementless Total Hip Arthroplasty
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