Technique and Results for Total Hip Replacement in Sheep: An Experimental Model

SummaryFifty healthy adult Suffolk cross sheep were evaluated as a research animal for cemented total hip replacement. The surgical technique, peri-operative care, and long-term evaluation of the animals is reported. A modular cemented canine hip replacement system was used in this project. Postoperative fractures of the operated femur were observed in five animals. Two sheep developed septic loosening of the acetabular components. Two sheep experienced immediate postoperative luxations. One animal developed an acetabular fracture and infection. Five sheep exhibited mild lameness of the operated limb one year postoperatively, while all others had a normal gait. Postoperative activity level played a significant role in the development of femur fractures.Fifty adult Suffolk cross sheep were evaluated as a research animal for cemented total hip replacement. The surgical technique, peri-operative care and long-term evaluation of the animals are reported.

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Can a surgeon predict the longevity of a total hip replacement?

Hip International ◽

10.1177/1120700019839685 ◽

2019 ◽

Vol 30 (5) ◽

pp. 523-529

Author(s):

Kalliopi Lampropoulou-Adamidou ◽

Theofilos Karachalios ◽

Panagiotis Megas ◽

George Petsatodis ◽

John Vlamis ◽

...

Keyword(s):

Surgical Technique ◽

Total Hip Replacement ◽

Hip Replacement ◽

Senior Author ◽

Activity Level ◽

Observer Agreement ◽

Total Hip ◽

Actual Outcome ◽

Radiographic Changes

Introduction: The purpose of this study was to examine the ability of a surgeon to predict survival of a total hip replacement (THR) based on the patient’s diagnosis, demographics, postoperative activity level and the surgical technique. Methods: 4 experienced hip surgeons were asked to predict the longevity of 131 Charnley THRs, performed by the senior author (GH) 22–35 years ago, by providing them with pre- and postoperative radiographs, and data concerning patient’s diagnosis, demographics, postoperative activity level and the surgical technique. This process was repeated 3 months later. Results: There was only a slight agreement between the majority of the predictions and actual outcome. The inter-observer agreement was also slight and intra-observer agreement ranged from slight to moderate. Conclusion: We confirmed that surgeons are unable to determine the life expectancy of the implants of a THR, based on the aforementioned data, because there are other non-identified factors that affect the survivorship of a THR. For this reason, regular follow-up remains the safest way to evaluate patients’ clinical picture and the evolution of radiographic changes, if there are any, in order to accurately advise patients and decide on the appropriate time for revision.

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Long-term results of harris total hip replacement

The Journal of Arthroplasty ◽

10.1016/s0883-5403(86)80012-2 ◽

1986 ◽

Vol 1 (4) ◽

pp. 229-236 ◽

Cited By ~ 4

Author(s):

Paul F. Lachiewicz ◽

Byron D. Rosenstein

Keyword(s):

Total Hip Replacement ◽

Hip Replacement ◽

Long Term Results ◽

Total Hip

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Intraoperative Femur Fractures During Total Hip Replacement

Clinical Orthopaedics and Related Research ◽

10.1097/00003086-197811000-00013 ◽

1978 ◽

Vol &NA; (137) ◽

pp. 96???103 ◽

Cited By ~ 2

Author(s):

MICHAEL M. TAYLOR ◽

MARVIN H. MEYERS ◽

J. PAUL HARVEY

Keyword(s):

Total Hip Replacement ◽

Hip Replacement ◽

Total Hip ◽

Femur Fractures

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Impact of a new post‐operative care model in a rural hospital after total hip replacement and total knee replacement

Australian Journal of Rural Health ◽

10.1111/ajr.12826 ◽

2021 ◽

Author(s):

Baeho Joo ◽

Jodie Marquez ◽

Gemma Model ◽

Bo Fan ◽

Peter G. Osmotherly

Keyword(s):

Total Knee Replacement ◽

Total Hip Replacement ◽

Knee Replacement ◽

Hip Replacement ◽

Rural Hospital ◽

Care Model ◽

Total Hip ◽

Operative Care ◽

Total Knee

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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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