ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2020
Patella-patellar tendon angle and lateral patella-tilt angle decrease patients with chondromalacia patella.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 25 citations in OpenAlex.
- Lower patella-patellar tendon angle is associated with increased odds of patellofemoral osteoarthritis progression in ACL revision patients: A case control study.Journal of experimental orthopaedics · 2026Article
- Lateral patellar compression syndromeQuantitative imaging in medicine and surgery · 2026Article
- Elucidate the quantitative early diagnostic indicators of mild chondromalacia patella: ratios of trochlear sulcus angle to patellar and trochlear widths.Frontiers in medicine · 2026Article
- A study on the diagnostic value of knee MRI parameters for lateral patellar compression syndrome: clinical application of P-PTA, LP and ISR.Quantitative imaging in medicine and surgery · 2025Article
- Morphometric assessment of the patella in healthy, chondromalacia and meniscopathy individuals: a retrospective study.BMC musculoskeletal disorders · 2025Article
- [Why does the patellofemoral cartilage collapse? : A critical analysis of epidemiology, etiology and prevention].Orthopadie (Heidelberg, Germany) · 2025Review
- Correlation between severity of knee joint osteoarthritis and alignment of patellofemoral and patellar height on radiographs.Chinese medical journal · 2025Article
- The effect of surgery for multipleligament knee injuries on patellar position and patellofemoral function: a retrospective study.Journal of orthopaedic surgery and research · 2025Article
- Abnormal sagittal patellar tilt during active knee flexion and extension on 4DCT might be associated with patellofemoral pain.BMC musculoskeletal disorders · 2025Article
- A novel assessment of the differences in various measurements in patients with patella alta and baja: a retrospective cross-sectional study.Quantitative imaging in medicine and surgery · 2024Article
- Ratio of Tibial Tubercle-Trochlear Groove Distance to Patellar Width as a Predictor of Patellar Dislocation: Analysis of Individualized Tibial Tubercle Lateralization Parameters.Orthopaedic journal of sports medicine · 2024Article
- Correlating quadriceps patellar tendon angle and lateral patellar tilt angle in patients with irregular alignment: a cross-sectional study with retrospective data.Quantitative imaging in medicine and surgery · 2024Article
- Differences in Patellofemoral Alignment Between Static and Dynamic Extension Positions in Patients With Patellofemoral Pain.Orthopaedic journal of sports medicine · 2024Article
- Osteotomy Correction Angle Cut-off Points Can Guide the Operation to Prevent a Significant Decrease in Patella Height.Orthopaedic surgery · 2024Article
- Morphology and transverse alignment of the patella have no effect on knee gait characteristics in healthy Chinese adults over the age of 40 years.Frontiers in bioengineering and biotechnology · 2024Article
- Correlation of Patellofemoral Chondromalacia and Body Mass Index (BMI) in Relation to Sex and Age Analysis of 1.5T and 3.0T Magnetic Resonance (MR) Images Using the Outerbridge Scale.Medical science monitor : international medical journal of experimental and clinical research · 2022Article
- The SP-ET index is a new index for assessing the vertical position of patella.Insights into imaging · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe 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.
methodsMRI 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).
resultsP-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.
conclusionsPatellar 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.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.