Evidence map›Paper›PMID 40165162›Full record

ArticleBMC musculoskeletal disorders2025

Psychological readiness for return to sport following distal femoral osteotomy in patients with recurrent patellar instability.

Maximilian Hinz, Peter Rab, Moritz Brunner, Marco-Christopher Rupp, Armin Runer, Luca Grüning, Lisa Rahn, Sebastian Siebenlist, Andrea Achtnich

Abstract read
In one paragraph

Article in BMC musculoskeletal disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Maximilian HinzDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Peter RabDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Moritz BrunnerDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Marco-Christopher RuppDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Armin RunerDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Luca GrüningDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Lisa RahnDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.
Sebastian SiebenlistDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany. sebastian.siebenlist@tum.de.
Andrea AchtnichDepartment of Sports Orthopaedics, Technical University of Munich, Ismaninger Strasse 22, 81675, Munich, Deutschland, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere exists a paucity of data on the relationship between psychological factors and return to sport in patients who undergo surgery for complex patellofemoral instability (PFI). The purpose of this study was to investigate the influence of psychological factors on the return to the preoperative level of sports and knee function in patients with complex PFI who were treated with distal femoral osteotomy (DFO).

methodsPatients who underwent DFO for recurrent PFI associated with increased femoral antetorsion and/or valgus malalignment were included. Psychological readiness to resume sporting activities was assessed at a minimum of 12 months postoperatively using the PFI-Return to Sport after Injury (PFI-RSI) scale. A receiver operating curve (ROC) analysis was performed for the PFI-RSI scale and its ability to discriminate between patients who returned to the preoperative level of sport and those who did not. Spearman's rank-order correlation was used to test for correlations between the PFI-RSI scale and patient-reported outcome measures (PROM), including Banff Patella Instability Instrument 2.0 (BPII 2.0), Kujala score, Tegner Activity Scale (TAS) and Visual Analog Scale (VAS) for pain.

resultsSixty-five patients (70.8% female) were included at a median of 61.0 months (40.0-78.5 months) postoperatively. Patients who returned to their preoperative level of sports scored significantly higher on the PFI-RSI scale than patients who did not (75.8 [64.4-84.2] vs. 40.8 [23.4-60.9], p < 0.001). Reaching a threshold value of 55 on the PFI-RSI scale could predict whether or not patients returned to the preoperative level of sport with a sensitivity of 90.9% and a specificity of 70.6% (area under the curve = 0.834; Youden index = 0.615). The PFI-RSI scale showed moderate to strong correlations with PROM.

conclusionPsychological readiness to resume sporting activities correlated with knee function and was significantly higher in patients who achieved the preoperative level of sport than in patients who did not.

Indexed as

FemurJoint InstabilityOsteotomyPatellofemoral JointReturn to SportAdolescentAdultFemaleHumansMalePatient Reported Outcome MeasuresRecurrenceTreatment OutcomeYoung AdultACL-RSIDerotational osteotomyMaltrackingReturn to sport after injuryVarus osteotomy

Identifiers

PMID40165162
PMCPMC11956411

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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.