Prediction Model for Contralateral Hip Dislocation in Cerebral Palsy Patients with Unilateral Hip Dislocation: A Scoring System to Guide Decision Making
- Authors: Tangadulrat P.1,2, Adulkasem N.1, Suganjanasate K.1, Wongcharoenwatana J.1, Ariyawatkul T.1, Eamsobhana P.1, Chotigavanichaya C.1
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Affiliations:
- Mahidol University
- Prince of Songkhla University
- Issue: Vol 12, No 3 (2022)
- Pages: 289-300
- Section: Original Study Articles
- URL: https://bakhtiniada.ru/2219-4061/article/view/123589
- DOI: https://doi.org/10.17816/psaic1270
- ID: 123589
Cite item
Abstract
BACKGROUND: Cerebral palsy (CP) patients commonly present with unilateral hip dislocation. However, the decision for concurrent prophylaxis surgery on the contralateral hip in this condition is still controversial.
AIM: This study aims to explore the prognostic factors for contralateral hip dislocation and develop a scoring system.
MATERIALS AND METHODS: Data on CP patients with unilateral hip dislocation between January 2005 to January 2019 were reviewed. We explored the difference of preoperative parameters between the group in which the contralateral hip is eventually dislocated or remains stable. A multivariable logistic regression analysis was performed to develop a model for predicting contralateral hip dislocation.
RESULTS: Seven of included 30 patients (23.3%) developed contralateral hip dislocation. Pre-operative contralateral hip’s Reimer’s Migration Index (RMI), Acetabular Index (AI), Lateral Center Edge Angle of Wiberg (CEA), and Pelvic obliquity (PO) were significantly different (p = 0.049, 0.019, 0.030 and 0.038 respectively). The multivariable logistic regression analysis reveals that RMI > 25% (mOR 36.66, 95% CI 1.13–1185.50, p = 0.042) and age <9 years old (mOR = 22.55, 95% CI 0.76–665.37, p = 0.071) are significant predictors. Both parameters were included in the model, which revealed an AuROC of 0.84 (95% CI 0.69–0.99). Each factor was assigned a score of 1. There was no contralateral hip displacement in patients with a score of 0. Two out of 15 patients (28.6%) with a score of one developed contralateral hip displacement. Five out of eight (71.4%) patients with a score of 2 developed contralateral hip dislocation.
CONCLUSIONS. Significant predictors for contralateral hip dislocation in CP patients are RMI >25% and age <9 years old. The proposed scoring system might help guide the surgeon’s decision to perform contralateral prophylactic surgery.
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##article.viewOnOriginalSite##About the authors
Pasin Tangadulrat
Mahidol University; Prince of Songkhla University
Email: P.tangadulrat@gmail.com
ORCID iD: 0000-0003-0346-7135
МD, Department of Orthopedics surgery, Faculty of Medicine Mahidol University; Department of Orthopedics surgery, Faculty of medicine Prince of Songkhla University
Thailand, Bangkok; SongkhlaNath Adulkasem
Mahidol University
Email: Adukasem.n@gmail.com
ORCID iD: 0000-0001-5663-1889
МD, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokKuntalee Suganjanasate
Mahidol University
Email: kuntalee1212@gmail.com
ORCID iD: 0000-0002-0929-651X
МD, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokJidapa Wongcharoenwatana
Mahidol University
Email: jidapa.wongcha@gmail.com
ORCID iD: 0000-0001-8986-7943
МD, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokThanase Ariyawatkul
Mahidol University
Email: thanaseortho@gmail.com
ORCID iD: 0000-0001-6009-1838
МD, Assistant Professor, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokPerajit Eamsobhana
Mahidol University
Email: peerajite@gmail.com
ORCID iD: 0000-0002-2634-1175
МD, Associated Professor, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokChatupon Chotigavanichaya
Mahidol University
Author for correspondence.
Email: chatuponc@gmail.com
ORCID iD: 0000-0002-1209-744X
МD, Associated Professor, Department of Orthopedics surgery, Faculty of Medicine Mahidol University
Thailand, BangkokReferences
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