A Model of the Canine Stifle Joint With Representation of Medial Meniscus During Squat Motion

2011 ◽  
Author(s):  
Antonis Stylianou ◽  
Trent Guess ◽  
Leo Olcott ◽  
Gavin Paiva ◽  
Mohammad Kia ◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Cruciate Ligament ◽  
Therapeutic Strategies ◽  
Joint Function ◽  
Cranial Cruciate Ligament ◽  
Multibody Modeling ◽  
Modeling Methods ◽  
Stifle Joint ◽  
Subject Specific ◽  
Canine Stifle

Subject specific anatomical models of the canine stifle can be extremely valuable in understanding the biomechanical risks and causes associated with cranial cruciate ligament and meniscal injuries. Such models would also be powerful in improving preventative and therapeutic strategies for canines [1]. The menisci play an important role in joint function by transmitting tibio-femoral loads and by reducing the pressure on the articular cartilage. Multibody modeling methods often ignore the menisci in order to simplify the representation of the joint structures.

Modelling the Effects of Cranial Cruciate Ligament Transection, Medial Meniscal Release and Triple Tibial Osteotomy on Stability of the Canine Stifle Joint

2020 ◽  
Vol 33 (03) ◽  
pp. 174-182
Author(s):  
Tanja V. Jensen ◽  
Signe S. Kristiansen ◽  
Lene E. Buelund ◽  
James E. Miles
Keyword(s):  
Ex Vivo ◽  
Cruciate Ligament ◽  
Patellar Ligament ◽  
Tibial Osteotomy ◽  
Joint Angles ◽  
Cranial Cruciate Ligament ◽  
Stifle Joint ◽  
Wide Range ◽  
Loading Ratio ◽  
Canine Stifle

Abstract Objective The aim of this study was to evaluate the ex vivo effects of sequential cranial cruciate ligament transection (CCLx), medial meniscal release (MMR) and triple tibial osteotomy (TTO) on canine stifle stability compared with the intact state, across a wide range of joint angles. Study Design Nine right hind limb preparations were instrumented to provide constant quadriceps and gastrocnemius loads in a 3:1 ratio, and extended from full flexion during fluoroscopic recording. Recordings were repeated after each of CCLx, MMR and TTO. Fluoroscopic landmarks were used to calculate tibial subluxation and patellar ligament angle. Results Medial meniscal release resulted in additional cranial tibial subluxation compared with CCLx. Triple tibial osteotomy restored stifle stability up to a joint angle of 125 degrees. The presence of the crossover angle could be inferred from the patellar ligament angle and subluxation curves. Conclusion Our results suggest that in the cranial cruciate ligament-deficient stifle, the crossover angle at which loading shifts between the caudal and cranial cruciate ligaments is dependent on both loading and integrity of the medial meniscus. Triple tibial osteotomy improves stifle stability over a wide range of joint angles under a quadricep to gastrocnemius loading ratio of 3:1 by converting cranial tibial thrust to caudal tibial thrust, due to TTO increasing the amount of joint extension required to reach the crossover angle.

Association of mineralisations in the stifle joint of domestic cats with degenerative joint disease and cranial cruciate ligament pathology

2016 ◽  
Vol 19 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Katja Voss ◽  
Philemon Karli ◽  
Pierre M Montavon ◽  
Hans Geyer
Keyword(s):  
Medial Meniscus ◽  
Cruciate Ligament ◽  
Degenerative Joint Disease ◽  
Joint Capsule ◽  
Degenerative Changes ◽  
Joint Disease ◽  
Fat Pad ◽  
Cranial Cruciate Ligament ◽  
Stifle Joint ◽  
Periarticular Tissue

Objectives The aim of the study was to evaluate the prevalence, size, location and appearance of mineralisations in feline stifle joints, and to evaluate their relationship with osteoarthritis and cranial cruciate ligament (CrCL) status. Methods Presence or absence, and size of mineralisations were determined from lateral stifle radiographs of 25 cats with CrCL rupture, and 44 cat cadavers without CrCL rupture. Mineralisations were classified as small, medium or large. Prevalence was compared between the clinically affected cats and the cadavers; the cadaver group was subdivided into an age-matched and an older group. Ten stifles with varying sizes of mineralisations were prepared as whole-knee specimens for histopathology. Location and appearance of the mineralisations, and degenerative changes in the cruciate ligaments, menisci, articular cartilage and joint capsule are described. Results Prevalence of articular mineralisations was 0.76 in stifles of cats with CrCL rupture (mean ± SD age 8.6 ± 4.5 years), 0.64 in stifles of age-matched cat cadavers and 0.74 in older cat cadavers (mean ± SD age 17.0 ± 2.4 years). Cats with CrCL rupture had a higher percentage of medium and large mineralisations than cats without CrCL rupture. Microscopically, small mineralisations were calcifications usually located in the cranial horn of the medial meniscus. Larger mineralisations were found to be ossifications, commonly located in the joint capsule and fat pad. Cats with larger mineralisations showed more signs of osteoarthritis, including degenerative changes in the CrCL. Conclusions and relevance Mineralisations in feline stifle joints were found to differ in size, appearance and location. Small mineralisations were usually confined to the medial meniscus, as described previously; larger mineralisations tended to be located in the tissues cranial to the menisci and seemed to be associated with osteoarthritis and CrCL pathology. Large mineralisations in feline stifles are ossifications in periarticular tissue and are associated with degenerative joint disease.

scholarly journals Ultrasonographic Evaluation of Dogs with Cranial Cruciate Ligament Rupture Undergoing to Arthrotomy

2019 ◽  
Vol 47 (1) ◽  
Author(s):  
Luanna Ferreira Fasanelo Gomes ◽  
Thales Bregadioli ◽  
Stefano Carlo Filippo Hagen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Medial Meniscus ◽  
Cruciate Ligament ◽  
Meniscal Tears ◽  
Resonance Imaging ◽  
Cranial Cruciate Ligament ◽  
Stifle Joint ◽  
Ligament Rupture ◽  
Meniscus Tears ◽  
Cranial Cruciate Ligament Rupture

Background: The cranial cruciate ligament rupture (CrCLR) is the most common disease of the stifle joint in dogs. One of the major concerns in the assessment of these animals is diagnosing the presence of a medial meniscus tears, which is a frequent consequence due to the instability of the joint. Ultrasonography is indicated in the evaluation of the menisci from human and canine patients, and the results are similar to magnetic resonance imaging. The aim of this study was to compare the ultrasonography and the arthrotomy in the evaluation of the cranial cruciate ligament and medial meniscus of dogs with CrCLR undergoing surgery for stifle stabilization.Materials, Methods & Results: Ultrasonographic examination was performed prior to arthrotomy in 23 dogs with diagnosis of complete CrCLR and five with suspected partial CrCLR undergoing for stifle joint stabilization surgery. The ultrasonography identified the complete rupture in 82.6% and the arthrotomy in 100% of the joints with this diagnosis. In the joints with suspected CrCLR during the clinical exam, arthrotomy and ultrasonography identified respectively three and four joints with partial CrCLR, and two and one with healthy ligaments. There was no difference between the two techniques in the assessment of the cranial cruciate ligament (P = 0.20). The ultrasonography identified medial meniscal tears in 39.3%, while arthrotomy was found in 21.4% (P = 0.0006) of the joints. The most frequent meniscal tear type observed in the arthrotomy was folded caudal horn. The ultrasonography was able only in differentiate presence and absence of meniscal injury. Besides the real tear that affects the meniscus morphology, the ultrasound also identified echogenicity and echotexture changes in the medial (5/28) and lateral (8/28) menisci. Other changes observed in all joints evaluated by ultrasound were the presence of effusion and synovial membrane thickening.Discussion: The complete and almost complete CrCLR are diagnosed by clinical examination through the evaluation of instability of the stifle joint, which is not possible in partial CrCLR in stable joints. In this study of the five evaluated stable joints, the ultrasound correctly identified the partial CrCLR in three joints and the ligament integrity in one of the joints when compared to arthrotomy. In animals with stifle joint instability the meniscus assessment is fundamental as it is one of the main causes of persistent lameness in dogs subjected to conservative or surgical treatment. Ultrasonography cannot differentiate the types of meniscal tears but identified approximately 1.8 times more medial meniscus tears compared to arthrotomy. Despite the bucket handle being the most common tear of medial meniscus in dogs with CrCLR, four of the six meniscal tears identified by arthrotomy were folded caudal horn. This lesion causes cranial displacement of the caudal horn which may have facilitated its identification by minimally invasive arthrotomy, being the probable reason for its high incidence in this study. Echogenicity and echotexture changes without affecting the meniscus morphology were related with intrasubstance degeneration described in human medicine. Ultrasonography is not the better technique to assess the CrCL but can assist in identifying partial ruptures. Because it has results similar to magnetic resonance imaging, ultrasonography is an important tool in the diagnosis of meniscus tears.

Validation of stress magnetic resonance imaging of the canine stifle joint with and without an intact cranial cruciate ligament

2014 ◽  
Vol 75 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Giovanni Tremolada ◽  
Matthew D. Winter ◽  
Stanley E. Kim ◽  
David Spreng ◽  
Antonio Pozzi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Cranial Cruciate Ligament ◽  
Stifle Joint ◽  
Canine Stifle

scholarly journals Acoustic radiation force impulse (ARFI) elastography of the stifle joint of healthy beagles

2020 ◽  
Vol 72 (5) ◽  
pp. 1646-1652
Author(s):  
L.M.I. Diogo ◽  
C.R. Andrade ◽  
L.G. Faria ◽  
R.A.R. Uscategui ◽  
M.C. Maronezi ◽  
...  
Keyword(s):  
Medial Meniscus ◽  
Acoustic Radiation ◽  
Cruciate Ligament ◽  
Radiation Force ◽  
Acoustic Radiation Force ◽  
Acoustic Radiation Force Impulse ◽  
Patellar Ligament ◽  
Stifle Joint ◽  
Arfi Elastography ◽  
Canine Stifle

ABSTRACT The objective was to establish the reference standards for elastography of the main structures of the canine stifle joint. The medial meniscus, patellar and cruciate ligaments of thirty healthy beagles was evaluated by B-mode and ARFI elastography (n=60 joints). Analysis detected a positive correlation of the shear wave velocity (SWV) of structures according to age. Patellar ligament presented a gradual stiffness increase in relation to age, while medial meniscus and cruciate ligament were more rigid in puppies than in adults. However, greater stiffness of these structures was observed in elderly animals. Elasticity of each structure was evaluated according to gender and reproductive status. Females presented greater stiffness of all structures, with SWV differing 0.3 and 0.36m/s between genders. Only the medial meniscus was not stiffer in neutered animals when compared to intact animals, differing only 0.02m/s in menisci and 0.4 to 0.47m/s in ligaments between groups. These findings corroborate with literature data that states a higher prevalence of ligament insufficiency in elderly dogs, females and neutered animals. It was concluded that ARFI elastography of the canine stifle joint is feasible and its application can be potentially effective in early diagnosis of ligament and meniscal changes.

Biomechanical Properties of the Stifle Joint Lateral Collateral Ligament in Dogs

1992 ◽  
Vol 05 (04) ◽  
pp. 158-162 ◽  
Author(s):  
D. Blackketter ◽  
J Harari ◽  
J. Dupuis
Keyword(s):  
Mechanical Properties ◽  
Cruciate Ligament ◽  
Lateral Collateral Ligament ◽  
Biomechanical Properties ◽  
Fibular Head ◽  
Joint Stability ◽  
Collateral Ligament ◽  
Cranial Cruciate Ligament ◽  
Stifle Joint

Bone/lateral collateral ligament/bone preparations were tested and structural mechanical properties compared to properties of cranial cruciate ligament in 15 dogs. The lateral collateral ligament has sufficient stiffness to provide stifle joint stability and strength to resist acute overload following fibular head transposition.

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