ArticlePloS one2021
Examination of the proximodistal patellar position in small dogs in relation to anatomical features of the distal femur and medial patellar luxation.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Morphometric assessment of the femoral trochlea, patella and patellar ligament in small breed dogs with and without grade II medial patellar luxation.BMC veterinary research · 2026Article
- Radiographic evaluation of patellofemoral proportional mismatch in small-breed dogs with medial patellar luxation: Implications for stifle joint morphology and surgical planning.Veterinary world · 2026Article
- Radiographic assessment of popliteal sesamoid position and cranial tibial subluxation in canine stifle joints undergoing TPLO: A retrospective study of 163 dogs.Veterinary surgery : VS · 2026Article
- Evaluation of the Tibial Plateau-Patella Angle (TPPA) in Dogs.Animals : an open access journal from MDPI · 2024Article
- Bidirectional Patellar Luxation in Small- or Miniature-Breed Dogs in Japan; Patient Characteristics and Radiographic Measures Compared with Medial Patellar Luxation.Veterinary sciences · 2023Article
- Evaluation of proximodistal patellar alignment in small breed dogs with or without patellar luxation using the Insall-Salvati, Caton-Deschamps, and Blackburne-Peel indices.Open veterinary journal · 2023Article
- Comparison of patellar position and moment arm between tibial plateau leveling osteotomy and cranial closing wedge ostectomy: AnOpen veterinary journal · 2023Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo determine the influence of anatomical features of the distal femur on the proximodistal patellar position and compare the proximodistal patellar position between dogs with and without medial patellar luxation (MPL). STUDY
designRetrospective case series (n = 71).
methodsMediolateral-view radiographs of clinical cases of dogs weighing less than 15 kg were obtained. The stifle joint angle, patellar ligament length, patellar length, size of the femoral condyle, trochlear length, and trochlear angle were measured and included in multiple linear regression analyses to ascertain their effects on the proximodistal patellar position. Radiographs were divided into MPL and control groups. The effects of MPL on the proximodistal patellar position and morphological factors were also examined.
resultsThe final model for the proximodistal patellar position revealed that the patella became distal as the ratio of the patellar ligament length to patellar length decreased, the trochlear angle relative to the femur increased, the trochlear length relative to the patellar length increased, or the trochlear length relative to the femoral condyle width decreased. The proximodistal patellar position in the MPL group was not significantly different from that in the control group despite the trend towards a distally positioned patella (p = 0.073). The MPL group showed a significantly shorter trochlea (p<0.001) and greater trochlear angle relative to the femur (p = 0.029) than the control group.
conclusionThe proximodistal patellar position depends on multiple factors, and its determination based on PLL/PL alone may not be appropriate. Dogs with MPL did not have a proximally positioned patella compared with dogs without MPL. Although hindlimbs with MPL had a shorter trochlea than those without patellar luxation, this difference did not appear to be sufficient to displace the patellar position proximally in small dogs, possibly compensated by increased trochlear angle relative to the femur.
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