Proximo-distal patellar position in three small dog breeds with medial patellar luxation.

  title={Proximo-distal patellar position in three small dog breeds with medial patellar luxation.},
  author={C. Wangdee and L. Theyse and H. Hazewinkel},
  journal={Veterinary and comparative orthopaedics and traumatology : V.C.O.T},
  volume={28 4},
INTRODUCTION Medial patellar luxation is thought to be associated with a high proximal position of the patella in the trochlear groove. OBJECTIVE To determine whether the ratio of patellar ligament length and patellar length (L:P) is influenced by the stifle angle (75°, 96°, 113°, 130°, and 148°) in small dog breeds and to compare the L:P ratio in dogs of three small dog breeds with and without medial patellar luxation. METHODS A mediolateral radiograph of the stifle joint was used to… Expand
Examination of the proximodistal patellar position in small dogs in relation to anatomical features of the distal femur and medial patellar luxation
Although hindlimbs with MPL had a shorter trochlea than those without patellar luxation, this difference did not appear to be sufficient to displace the patella position proximally in small dogs, possibly compensated by increased trochlear angle relative to the femur. Expand
Comparison of Radiographic Measurements of the Femur in Yorkshire Terriers with and without Medial Patellar Luxation.
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Measurement of Patellar Proximodistal Positioning with Limited Joint-Angle Sensitivity.
Patellar proximodistal position can be acceptably assessed at a variety of caudal joint angles using the described angular index, and further work is required to define reference intervals across a range of canine breeds. Expand
Segmental Femoral Ostectomy for the Reconstruction of Femoropatellar Joint in Dogs with Grade IV Medial Patellar Luxation.
Segmental femoral ostectomy was a useful treatment method for MPL grade IV with shortened quadriceps muscle length relative to the femoral length, with an increased range of motion in all dogs compared with their preoperative status. Expand
Effect of Limb Position on Measurements of the Quadriceps Muscle Length/Femoral Length Ratio in Normal Beagle Dogs.
The QML/FL was more influenced by joint angles when the hip was flexed or the stifle was extended, Hence, these positions should be avoided when evaluating the Q ML/FL so that the QML is less altered by slight positioning disparities. Expand
Systematic review of patellar luxation in dogs
The purpose of this study was to systematically review the scientific information relating to the development of patella luxation in dogs, to summarize the scientific knowledge and identify areas in need of research. Expand
Comparison of Insall-Salvati Index and Its Modification in Normal Dogs from Four Different Body Weight Groups.
The sex of the dog and the presence of enthesophytes at the apex of the patella were two influential factors for the IS and LLcr:PL values. Expand
The epidemiology of patellar luxation in dogs attending primary-care veterinary practices in England
Patellar luxation warrants inclusion as a welfare priority in dogs and control strategies that include this disorder should be considered as worthwhile breeding goals, especially in predisposed breeds. Expand
Etiology of patellar luxation in small breed dogs
Patellaluxation (PL) ar en vanlig ortopedisk sjukdom som karakteriseras av att patellan kan luxera fran trochlea ossis femoris. Detta sker antingen manuellt, spontant nar hunden ar i rorelse eller saExpand


Proximodistal alignment of the canine patella: radiographic evaluation and association with medial and lateral patellar luxation.
Measurements of both PLL:PL and A:PL are recommended in dogs with patellar luxation, and surgical correction should be considered in those with abnormal values. Expand
Vertical patellar position in large-breed dogs with clinically normal stifles and large-breed dogs with medial patellar luxation.
Large-breed dogs with MPL had a significantly more proximal vertical patellar position compared with large-breeds dogs with clinically normal stifles, and proximal displacement of the patella within the femoral trochlear groove may play a role in MPL. Expand
Vertical position of the patella in the stifle joint of clinically normal large-breed dogs.
The L:P proved to be a repeatable measurement of vertical patellar position, which is independent of stifle angles from 75 degrees to 148 degrees, which could be used as a quantitative method for diagnosing patella alta and patellA baja in large-breed dogs. Expand
Latero-distal transposition of the tibial crest in cases of medial patellar luxation with patella alta.
This modified surgical procedure places the patella into a more normal proximo-distal anatomical position, is simple to perform, and may become common practice for surgical treatment of medial patellar luxation with an alta component. Expand
Radiographic measurement for femoral varus in Pomeranian dogs with and without medial patellar luxation.
Significant change of distal femoral varus exists in Pomeranian dogs with grade III MPL and the FVA, aLDFA and mLDFA values in gradeIII MPL group were significantly greater than those in the other two groups. Expand
Use of radiographic measurements in the evaluation of dogs with medial patellar luxation.
Measurements of the preoperative quadriceps angle and postoperative inclination angle may be useful for evaluating dogs with grade-3 luxation and further studies using other imaging techniques are required in dogs with severe grade-4 luxation due to the difficulty in obtaining a good radiographic position. Expand
Pre- and postoperative radiographic and computed tomographic evaluation of dogs with medial patellar luxation.
The effects of surgery for MPL can be quantified with radiographic and CT measurements, to correlate surgical treatment with functional outcome and postoperative occurrence of luxation. Expand
Long patellar tendon: radiographic sign of patellofemoral pain syndrome--a prospective study.
Results of this study strongly suggest that idiopathic retropatellar pain is closely associated with patella alta, and the shape of the intercondylar sulcus and the mediolateral position of the patellA were identical in both knees, providing no evidence for patellofemoral incongruence or lateral patellar tilt. Expand
Evaluation of surgical treatment of medial patellar luxation in Pomeranian dogs.
The postoperative lameness score decreased significantly in comparison with the preoperative score at four weeks and thereafter until the end of the study, and the recurrence of patellar luxation and the degree of lameness were evaluated up to at least 16 weeks after surgery. Expand
Major complications and risk factors associated with surgical correction of congenital medial patellar luxation in 124 dogs.
Overall, grade 1 luxations had a significantly lower incidence of major complications than other grades, while body weight, age, sex, and bilateral patellar stabilization were not associated with risk of major complication development. Expand