Research Article
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The relation between femoral sulcus angle and patellar subluxation

Year 2019, Volume: 16 Issue: 2, 231 - 234, 29.08.2019
https://doi.org/10.35440/hutfd.581297

Abstract

Background:
In this study, we aimed to determine whether there is a relationship between
patellar subluxation and trochlear angle by using femoral trochlear angle
measurement in patients with patellar subluxation who were evaluated for knee
MRI.

Methods: 550 patients with
knee pain who underwent knee MRI in the radiology clinic were evaluated
retrospectively via PACS system. In this evaluation, the presence of patellar
subluxation was examined and trochlear angle measurements were performed on the
axial plane. Patellar subluxation was measured on the axial section where the
medial or lateral corners of the patella were easily seen. The distance between
the line drawn perpendicular to the medial or lateral corners of the patella
and the line drawn perpendicular to the anterior section of the medial and
lateral femoral condyles was mesasured. It was considered as subluxation when
this distenace was above 5 mm. Trochlear angle was measured as the angle
between the highest point of the medial and lateral facets of the trochlea and
the deepest point of the intercondylar sulcus. Patients without patellar
subluxation were accepted as the control group. Patellar subluxation group and
control group were compared in terms of trochlear angle.

Results: Total of 395
patients included in the study. The mean age of them was 39,33 ± 0,45. 189
(47,8%) of the patients were female and 206 (52,2%) were male. When all
patients were evaluated together, the mean trochlear angle was calculated as
132,52 ± 0,52. The mean trochlear angle was 130,11 ± 8,4 in patients without
patellar subluxation. The mean trochlear angle of the patients with lateral
patellar subluxation was 144,28 ± 12,0. The mean trochlear angle of the
patients with medial patellar subluxation was 133,31 ± 10,1. A statistically significant
difference was found between the control group and the lateral patellar
luxation group in terms of trochlear angle (p = 0.000).

Conclusions:
There is a significant relationship between the lateral patellar subluxation
and trochlear angle which is an easily recognizable pathology on routine MRI.
Early diagnosis and effective treatment of this pathology may help to reduce
morbidity.

 











Keywords: Femoral sulcus
angle, patella, subluxation, trochlear dysplasia

References

  • 1. Parikh SN, Lykissas MG. Classification of Lateral Patellar Instability in Children and Adolescents. Orthop Clin North Am. 2016; 47(1):145-152.
  • 2. Tsavalas N, Katonis P, Karantanas AH. Knee joint anterior malalignment and patellofemoral osteoarthritis: an MRI study. Eur Radiol. 2012; 22(2):418-428.
  • 3. Toms AP, Cahir J, Swift L, Donell ST. Imaging the femoral sulcus with ultrasound, CT, and MRI: reliability and generalizability in patients with patellar instability. Skeletal Radiol. 2009; 38(4):329-38.
  • 4. Parikh SN, Rajdev N. Trochlear Dysplasia and its Relationship to the Anterior Distal Femoral Physis. J Pediatr Orthop. 2019; 39(3):177-184.
  • 5. Dejour D, Le Coultre B. Osteotomies in patello-femoral instabilities. Sports Med Arthrosc Rev. 2007; 15(1):39-46.
  • 6. Gillespie D, Mandziak D, Howie C. Influence of posterior lateral femoral condyle geometry on patellar dislocation. Arch Orthop Trauma Surg. 2015; 135(11):1503-9
  • 7. Duran S, Cavusoglu M, Kocadal O, Sakman B. Association between trochlear morphology and chondromalacia patella: an MRI study. Clin Imaging. 2017; 41:7-10.
  • 8. Tsakoniti AE, Mandalidis DG, Athanasopoulos SI, Stoupis CA. Effect of Q-angle on patellar positioning and thickness of knee articular cartilages. Surg Radiol Anat. 2011; 33(2):97-104.
  • 9. Yi M, Hong SH, Choi JY, Yoo HJ, Kang Y, Park J, et all. Femoral Trochlear Groove Morphometry Assessed on Oblique Coronal MR Images. AJR Am J Roentgenol. 2015; 205(6):1260-8.
  • 10. Nakanishi K, Inoue M, Harada K, Ikezoe J, Murakami T, Nakamura H, et all. Subluxation of the patella: evaluation of patellar articular cartilage with MR imaging. Br J Radiol. 1992; 65(776):662-7.
  • 11. Fucentese SF, von Roll A, Koch PP, Epari DR, Fuchs B, Schottle PB. The patella morphology in trochlear dysplasia--a comparative MRI study. Knee. 2006; 13(2):145-50.

Femoral sulkus açısı ve patellar subluksasyon ilişkisi

Year 2019, Volume: 16 Issue: 2, 231 - 234, 29.08.2019
https://doi.org/10.35440/hutfd.581297

Abstract

Amaç: Bu
çalışmada Diz MR tetkikleri retrospektif olarak incelenerek patellar subluksasyon
saptanan hastalarda femur troklear açı ölçümünü kullanarak patellar
subluksasyon ile troklear açı arasında ilişki olup olmadığı amaçlandı.

Materyal ve Metot: Diz
ağrısı şikayeti ile Radyoloji kliniğinde Diz MR tetkiki yapılan 550 hasta
retrospektif olarak PACS sistemi üzerinden değerlendirildi. Bu değerlendirmede
patellar subluksasyon varlığı incelendi ve aksiyal planda troklear açı
ölçümleri gerçekleştirildi. Patellar 
subluksasyon patellanın medial veya lateral köşelerinin en rahat
görülebildiği aksiyal kesit seçilerek patellanın medial veya lateral köşelerine
dik olarak çizilen hat ile medial veya lateral femoral kondilin anterior
kesimine dik olarak çizilen hat arası mesafenin 5 mm nin üzerinde olması olarak
belirlendi. Troklear açı ise troklear oluğun en derin olduğu kesit seçilerek
troklea medial ve lateral fasetlerinin en yüksek noktası ile interkondiler
sulkusun en derin noktası arasındaki açı olarak ölçüldü. Patellar subluksasyonu
olmayan hastalar kontrol grubu olarak kabul edildi. Patellar subluksasyon
saptanan grup ile kontrol grubu troklear açı yönünden karşılaştırıldı.

Bulgular:
Çalışmaya dahil edilen 395 hastanın ortalama yaşları 39,33±0,45 olarak
hesaplandı. Hastaların 189 (%47,8)’i kadın, 206 (%52,2)’si erkek idi. Tüm
hastalar birlikte değerlendirildiğinde troklear açı ortalama 132,52±0,52 olarak
hesaplandı. Patellar subluksasyon saptanmayan hastalardaki troklear açı
ortalama 130,11±8,4 olarak hesaplandı. Laterale patellar subluksasyon saptanan
hastaların ortalama troklear açı değeri 144,28±12,0, mediale patellar
subluksasyonu olan hastaların ortalama troklear açı değeri 133,31±10,1 olarak bulundu.
Kontol grubu ile laterale luksasyonu olan grup arasında ise troklear açı
yönünden istatistiksel olarak anlamlı farklılık bulundu (p=0,000).

Sonuç: Rutin
MR incelemelerinde kolaylıkla tanınabilen lateral patellar subluksasyon ile
troklear açı arasında anlamlı bir ilişki olup bu patolojinin erken tanısı ve
etkili tedavi edilmesi sonucu hastalardaki morbiditenin azalmasına yardımcı
olabilir.

 











Anahtar Kelimeler:
Femoral sulkus açısı, patella, subluksasyon, troklear displazi

References

  • 1. Parikh SN, Lykissas MG. Classification of Lateral Patellar Instability in Children and Adolescents. Orthop Clin North Am. 2016; 47(1):145-152.
  • 2. Tsavalas N, Katonis P, Karantanas AH. Knee joint anterior malalignment and patellofemoral osteoarthritis: an MRI study. Eur Radiol. 2012; 22(2):418-428.
  • 3. Toms AP, Cahir J, Swift L, Donell ST. Imaging the femoral sulcus with ultrasound, CT, and MRI: reliability and generalizability in patients with patellar instability. Skeletal Radiol. 2009; 38(4):329-38.
  • 4. Parikh SN, Rajdev N. Trochlear Dysplasia and its Relationship to the Anterior Distal Femoral Physis. J Pediatr Orthop. 2019; 39(3):177-184.
  • 5. Dejour D, Le Coultre B. Osteotomies in patello-femoral instabilities. Sports Med Arthrosc Rev. 2007; 15(1):39-46.
  • 6. Gillespie D, Mandziak D, Howie C. Influence of posterior lateral femoral condyle geometry on patellar dislocation. Arch Orthop Trauma Surg. 2015; 135(11):1503-9
  • 7. Duran S, Cavusoglu M, Kocadal O, Sakman B. Association between trochlear morphology and chondromalacia patella: an MRI study. Clin Imaging. 2017; 41:7-10.
  • 8. Tsakoniti AE, Mandalidis DG, Athanasopoulos SI, Stoupis CA. Effect of Q-angle on patellar positioning and thickness of knee articular cartilages. Surg Radiol Anat. 2011; 33(2):97-104.
  • 9. Yi M, Hong SH, Choi JY, Yoo HJ, Kang Y, Park J, et all. Femoral Trochlear Groove Morphometry Assessed on Oblique Coronal MR Images. AJR Am J Roentgenol. 2015; 205(6):1260-8.
  • 10. Nakanishi K, Inoue M, Harada K, Ikezoe J, Murakami T, Nakamura H, et all. Subluxation of the patella: evaluation of patellar articular cartilage with MR imaging. Br J Radiol. 1992; 65(776):662-7.
  • 11. Fucentese SF, von Roll A, Koch PP, Epari DR, Fuchs B, Schottle PB. The patella morphology in trochlear dysplasia--a comparative MRI study. Knee. 2006; 13(2):145-50.
There are 11 citations in total.

Details

Primary Language Turkish
Subjects Clinical Sciences
Journal Section Research Article
Authors

Dilek Şen Dokumacı 0000-0002-3012-427X

Sunay Sibel Karayol 0000-0002-2696-3580

Publication Date August 29, 2019
Submission Date June 22, 2019
Acceptance Date July 23, 2019
Published in Issue Year 2019 Volume: 16 Issue: 2

Cite

Vancouver Şen Dokumacı D, Karayol SS. Femoral sulkus açısı ve patellar subluksasyon ilişkisi. Harran Üniversitesi Tıp Fakültesi Dergisi. 2019;16(2):231-4.

Harran Üniversitesi Tıp Fakültesi Dergisi  / Journal of Harran University Medical Faculty