ArticleJournal of orthopaedics2025
What to expect after a tibial tubercle osteotomy? A 10-year retrospective study of clinical and radiologic outcomes.
Article in Journal of orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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
1 citing paper in PubMed.
- Patellofemoral instability: Anatomy, imaging techniques, and clinically relevant measurements.Skeletal radiology · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: Patellofemoral instability (PFI) is a multifactorial entity that combines osseous and soft tissue abnormalities. Tibial tubercle osteotomy (TTO) addresses biomechanical malalignment but faces 50 % recurrence rates with TT-TG >20 mm. Long-term outcomes show 62.5 % success at 10-15 years post-TTO, though 16-21 % require reoperations. Current evidence lacks long-term data, underscoring the need for individualized surgical planning. This study evaluates 10-year outcomes via MRI and clinical outcomes to identify predictors of suboptimal results. Methods: A retrospective observational study was designed. Demographic and clinical data, including age, gender, number of dislocations, and revision surgery, were collected. Radiologic measures were patellar height, tilt, displacement, maltracking, and trochlear dysplasia. They were assessed with computed tomography (CT) preoperatively and magnetic resonance imaging (MRI) postoperatively, with further identification of chondral lesions. Functional evaluation was based on the Kujala and Lysholm scores. Results: Data from 36 knees were included. Recurrent dislocation occurred in 14 % (5 cases), primarily in younger females (median age 16) with residual malalignment. Symptomatic hardware removal (50 %) was the most common complication. Significant improvements were observed in the TT-TG distance (23 IQR 15.05-25.3 V S 15 IQR 10-18 mm, p = 0.002), patellar tilt and displacement with 0° of extension (patellar tilt: 28.5 IQR 17.75-34.25 V S 16.5 IQR 10-24.25°, p < 0.005; patellar displacement: 6.3 IQR 3.07-14.6 V S 2.5 IQR 0-8.25 mm, p = 0.01) and with active contraction only patellar tilt (34 IQR 24-42.5 V S 29 IQR 15-36° p = 0.014). Despite 54.8 % present with advanced chondropathy (Outerbridge III/IV), no correlation was found with age, alignment, or functional scores. The median Kujala score was 89.5 IQR 82.5-97.5, and the median Lysholm was 91 IQR 81.75-95.75. Conclusion: TTO provides reliable long-term outcomes for patellofemoral instability. The risk of joint degeneration is non-negligible, especially in the setting of malalignment or older age on admission. Level of evidence: III.
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.