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Vet Comp Orthop Traumatol 2017; 30(03): 200-208
DOI: 10.3415/VCOT-16-07-0116
Original Research
Schattauer GmbH

Pelvic limb alignment measured by computed tomography in purebred English Bulldogs with medial patellar luxation

Filippo Lusetti
1   Ortovet stp srl, Parma, Italy
,
Andrea Bonardi
1   Ortovet stp srl, Parma, Italy
,
Chadi Eid
1   Ortovet stp srl, Parma, Italy
,
Anna Brandstetter De Bellesini
1   Ortovet stp srl, Parma, Italy
,
Filippo Maria Martini
1   Ortovet stp srl, Parma, Italy
2   Dipartimento di Scienze Medico-Veterinarie, Università degli Studi di Parma, Parma, Italy
› Author Affiliations
Further Information

Publication History

Received: 01 August 2016

Accepted: 02 March 2017

Publication Date:
23 December 2017 (online)

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Summary

Objectives: The aim of the study was to describe the differences in pelvic limb alignment between healthy purebred English Bulldogs and those with medial patellar luxation through the measurement of femoral and tibial angles on computed tomography images in multiplanar reconstruction modality (MPRCT).

Methods: Twenty-one purebred English Bulldogs were included and divided into two groups: one including healthy dogs (15 limbs) and the other including those with medial patellar luxation (24 limbs). Three different observers used MPR-CT to measure the following angles: anatomical lateral proximal femoral angle (aLPFA), anatomical lateral distal femoral angle (aLDFA), mechanical lateral proximal femoral angle (mLPFA), mechanical lateral distal femoral angle (mLDFA), angle of inclination of the femoral neck (AI), angle of anteversion (AA), mechanical medial proximal tibial angle (mMPTA), mechanical medial distal tibial angle (mMDTA), mechanical caudal distal tibial angle (mCdDTA), mechanical caudal proximal tibial angle (mCdPTA), and the tibial torsion angle (TTA). A Mann-Whitney U test was used to compare each variable in both groups.

Results: The values for aLDFA and mLDFA in the medial patellar luxation population were significantly increased compared to healthy subjects (p <0.05). No significant differences were observed for the other variables.

Clinical significance: In our population, an increased distal femoral varus was associated with medial patellar luxation. Our results could be useful to determine whether or not angular deformity of the femur is present and help determine the degree of correction necessary to restore alignment.

ORCID iD:

FMM: http://orcid.org/0000-0001-9615-2540

Keywords

Patellar luxation - English Bulldog - computed tomography - multiplanar reconstruction - limb alignment
 

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