Measurements of femoral angles, femur length, and hip width in cat radiographs

Fonseca, Rogério Lopes da; Lobo-Jr, Adalfredo R.; Santana, Marcelo Ismar Silva

doi:10.1590/1678-4162-9583

Cited by 4 publications

(13 citation statements)

References 7 publications

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“…Similarly, our FNA value, which was found to be 121.9 AE 4.1 degrees, differs from that of Fonseca and colleagues, which was 136.6 AE 3.86 degrees. 17 However, it has not been possible to compare our FNA value with the results of Swanson and colleagues, since the FNA angle was not taken into consideration in this study. Our tibial angles on the frontal plane (mMPTA: 93.5 AE 1.22 degrees; mMDTA: 100.4 AE 2.3 degrees) differ slightly from those in the only article published that measured this angle.…”

Section: Discussionmentioning

confidence: 90%

“…It is assumed that the latter had less cadaveric rigidity. 17 Cadaveric rigidity should not affect bones angle measurements if the limbs are correctly positioned. Cadaveric rigidity could impact on specimen positioning, affecting joints and muscles stiffness.…”

Section: Discussionmentioning

confidence: 99%

“…The cats used all belonged to the domestic shorthair breed, and we chose this breed for the purposes of the study because it is not selected and is, therefore, less subject to skeletal deformities. 3,4,17,26 Congenital medial patellar luxation has been reported in Devon Rex, Abyssinian, British Shorthair, Siamese and domestic short-haired cats. [27][28][29][30] Studies should be performed to determine a breed-specific assessment of sagittal and frontal planes joint angles.…”

Section: Limitationsmentioning

confidence: 99%

“…6,[8][9][10][11][12][13][14][15][16] Femoral joint reference angles in the frontal plane and tibial plateau angles (TPA) in the sagittal plane have been reported in cats. 6,17,18 A literature review failed to identify the normal mechanical cranial distal tibial angle (mCrDTA) or the normal femoral values in the sagittal plane. 6,17,18 Our aim was to quantify the intra-and inter-observer reliability of normal radiographic feline femoral and tibial joints angles in the sagittal and frontal planes.…”

Section: Introductionmentioning

confidence: 99%

“…6,17,18 A literature review failed to identify the normal mechanical cranial distal tibial angle (mCrDTA) or the normal femoral values in the sagittal plane. 6,17,18 Our aim was to quantify the intra-and inter-observer reliability of normal radiographic feline femoral and tibial joints angles in the sagittal and frontal planes. We hypothesized that the measurements of these angles on plain digital radiographs are reproducible.…”

Section: Introductionmentioning

confidence: 99%

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Good Inter- and Intra-Observer Reliability for Assessment of Radiographic Femoral and Tibial Frontal and Sagittal Planes Joints Angles in Normal Cats

Piccionello

Salvaggio

Volta

et al. 2020

Vet Comp Orthop Traumatol

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Objective The aim of this study was to evaluate the inter- and intra-observer reliability of plain digital radiographs for assessing normal feline femoral and tibial joint reference angles in the sagittal and frontal planes. Study Design This was a cadaveric radiographic anatomical study. that involved 20 short-haired domestic adult cats. Methods Sagittal and frontal plane tibial and femoral joint angles of 40 limbs were measured twice by three observers with different levels of experience. Inter- and intraobserver reliability was determined by the intra-class correlation coefficient (ICC). An ICC > 0.75 was considered high correlation, 0.74 > ICC > 0.60 good correlation, 0.59 > ICC > 0.4 fair correlation and an ICC < 0.40 poor correlation. Results Mean ± standard deviation angles were anatomic lateral proximal femoral angle (aLPFA) 110.6 ± 3.6; anatomic lateral distal femoral angle (aLDFA) 91.9 ± 2.1; mechanical lateral proximal femoral angle; mLPFA (mLPFA) 107.3 ± 3.6; mechanical lateral distal femoral angle (mLDFA) 95.5 ± 1.7; femoral neck anteversion (FNA) 121.9 ± 4.1; anatomical caudal proximal femoral angle (aCPFA) 156.1 ± 3.9; anatomical caudal distal femoral angle (aCDFA) 101.4 ± 1.4; mechanical medial proximal tibial angle (mMPTA) 93.5 ± 1.2; mechanical medial distal tibial angle (mMDTA) 100.5 ± 2.3; mechanical cranial proximal tibial angle (mCrPTA) 113.1 ± 3.2; tibial plateau angle (TPA) 23.1 ± 3.2; mechanical cranial proximal tibial angle (mCrDTA) 86.7 ± 3.1.The intra-observer ICC indicated high correlation for 70% or more of the measurements. The inter-observer agreement among observers was high. These results show that the radiographic method for measuring femoral and tibial joint angles was good or high, except for FNA and mCrDTA. Conclusions This study provides some radiographic anatomical and mechanical joint angles of the femurs and tibias of normal domestic short-haired cats. We found good reliability for both intra- and interobserver measurements.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Limitationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Good Inter- and Intra-Observer Reliability for Assessment of Radiographic Femoral and Tibial Frontal and Sagittal Planes Joints Angles in Normal Cats

Piccionello

Salvaggio

Volta

et al. 2020

Vet Comp Orthop Traumatol

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Evaluation of sex differences in pelvis and femur x‐ray images in British shorthair cats by geometric morphometric method

Özkan,

Pazvant

2023

Anat Histol Embryol

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The study covers British Shorthair cats, which is a popular domestic cat breed in our country and defined as ‘brachycephalic’ in terms of skull structure. Article focuses on the pelvis and femur region of cats which gynaecological and orthopaedic diseases of this cat breed, which are frequently encountered in clinical practice, is found to be important. It is aimed to reveal the shape differences between male and female individuals using geometric morphometric method. X‐ray images were used to examine the pelvis and femurs of cats via geometric method. Radiological images were obtained from a total of 40 British Shorthair cats (20 females and 20 males) in two positions, ventro‐dorsal (VD) and latero‐lateral (LL), and shape differences between the sexes were examined. As result, it is seen that the measurement points taken from the males are more outward and have sharper angles than the females. Study also shows pelvis is a better choice than femur when it comes to sex discrimination. Although traditional morphometric methods are more useful in clinical practice, it is thought that is important to support or re‐evaluate the data with the geometric morphometric method in academic field for a further approach.

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Accuracy of CAD/CAM and 3D printing in the treatment of feline femoral neck fracture

Trębacz¹,

BARTECZKO²,

Kurkowska³

et al. 2023

Medycyna Weterynaryjna

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The aim of this study was to investigate whether a CT scan provides accurate bone surface information for feline bone model development. The second part of study consisted of 3D printing of feline femoral bone models with and without femoral neck fractures (31-B1 and 31-B2 in AO VET classification), as well as the development and 3D printing of drill guides for treatment of femoral neck fractures. The study was carried out on eight models of femoral bones and four drill guides. Initially, trial models of the right and left femurs without neck fractures and trial drill guides were used. Radiographs showed that the use of the prototype guides made it possible to drill holes in the axes of the necks of the femurs. Then, after assessing the correct operation of the guides and improving their adhesion to the bone surface by smoothing the inner surfaces of the guide bases, final bone models without femoral neck fracture, models with fractures 31-B1 and 31-B2, and final drill guides were printed. All models featured a 2.7 × 30 mm positional cortical screw. Radiographs of the models, made after inserting screws, showed that the implants were placed as intended. Also in the longitudinal sections of the heads and necks of the femoral bones of the models without fractures, the implants were positioned in the intended places.

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Measurements of femoral angles, femur length, and hip width in cat radiographs

Cited by 4 publications

References 7 publications

Good Inter- and Intra-Observer Reliability for Assessment of Radiographic Femoral and Tibial Frontal and Sagittal Planes Joints Angles in Normal Cats

Good Inter- and Intra-Observer Reliability for Assessment of Radiographic Femoral and Tibial Frontal and Sagittal Planes Joints Angles in Normal Cats

Evaluation of sex differences in pelvis and femur x‐ray images in British shorthair cats by geometric morphometric method

Accuracy of CAD/CAM and 3D printing in the treatment of feline femoral neck fracture

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