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Patella–patellar tendon angle and lateral patella–tilt angle decrease patients with chondromalacia patella

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Knee Surgery, Sports Traumatology, Arthroscopy Aims and scope

A Correction to this article was published on 12 June 2020

This article has been updated

Abstract

Purpose

The aim of the present study was to evaluate the effect of patellofemoral joint morphology and patellar alignment (lateral patellar tilt and sagittal patellar tilt) on the presence and stage of CP, and identify the differences between sexes.

Methods

MRI of 243 patients [146 men (60.1%)] were evaluated retrospectively. Patients were grouped as normal group without chondromalacia, group with mild chondromalacia (grades 1–2) and group with severe chondromalacia (grades 3–4). Sagittal patellofemoral alignment was assessed by the angle between the patella and patellar tendon (P-PTA), and the angle between the quadriceps tendon and patella (Q-PA). Patellar tilt was assessed by lateral patellar tilt angle (LPTA). In addition, patellofemoral joint morphology was evaluated by measuring trochlear depth (TD), trochlear sulcus angle (TSA) and patella angle (PA).

Results

P-PTA, Q-PA, LPTA and TD values were significantly lower in patients with severe chondromalacia than in patients with both normal and mild chondromalacia (P < 0.001). TSA values were significantly higher in patients with severe chondromalacia than those with both normal and mild chondromalacia (P < 0.001). TSA was higher and TD was lower in women compared to men (P < 0.001). LPTA and P-PTA were lower in women compared to men, and the difference was significant. There was no difference in PA between the two sexes.

Conclusions

Patellar cartilage degeneration increases with trochlear dysplasia. There is a strong correlation between patellar malalignment (lateral patellar tilt and sagittal patellar tilt) and chondromalacia patella. Women are more prone to developing CP than men.

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Change history

  • 12 June 2020

    The original article can be found online.

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Authors and Affiliations

  1. Ankara City Hospital, Üniversiteler mh. Bilkent cd. No: 1, 06800, Çankaya/Ankara, Turkey

    Lale Damgacı & Semra Duran

  2. Zeynep Kamil Women’s and Children’s Disease Training and Research Hospital, Zeynep Kamil mh. Dr. Burhanettin Üstünel Sokağı No: 10, 34668, Üsküdar/İstanbul, Turkey

    Hamza Özer

Authors
  1. Lale Damgacı
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  2. Hamza Özer
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  3. Semra Duran
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Correspondence to Lale Damgacı.

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All procedures performed in studies including human participants were in accordance with ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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The original version of this article was revised: Error in article title is corrected here.

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Damgacı, L., Özer, H. & Duran, S. Patella–patellar tendon angle and lateral patella–tilt angle decrease patients with chondromalacia patella. Knee Surg Sports Traumatol Arthrosc 28, 2715–2721 (2020). https://doi.org/10.1007/s00167-020-06065-7

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