Tag Archive for: DDH.

Surgical Treatment of Pathological Developmental Dysplasia of the Hip: A 12-Year Study

Volume 7 | Issue 2 | May-August 2021 | Page: 02-06 | Qaisar Choudry, Robin W. Paton

Authors: Qaisar Choudry [1], Robin W. Paton [1]

[1] Department of Orthopaedics, East Lancashire Hospitals NHS Trust, England.

Address of Correspondence
Dr. Qaisar Choudry
Department of Orthopaedics, East Lancashire Hospitals NHS Trust, England.
E-mail: qaisar.choudry@elht.nhs.uk

Abstract

Aim: We aimed to assess outcomes of a 12-year longitudinal observational study of developmental dysplasia of the hip (DDH) requiring surgical intervention.

Method: We conducted a prospective study from 2004 to 2015 of all cases of DDH undergoing surgical intervention. In addition to clinical examination, Tönnis acetabular index (AI) method and International Hip Dysplasia Institute (IHDI) grading used.  Avascular necrosis of the femoral head (AVN) was assessed by the Kalamchi method.

Results & Discussion: There were 81 hips in 72 patients (12 male, 60 female).  Mean age of the first operative procedure was 16.4 months (95% CI, 13.66 to 19.14). Mean follow up was 47.6 months (95% CI, 41.8 to 53.4). 31 children underwent closed reductions, 48 required open reduction; 17 femoral and 39 pelvic osteotomies were performed during the course of the study. Overall, post-surgery 96.3 % were noted to have an acceptable AI (< 2 SD of the mean).  Five hips were considered to have poor results due to residual subluxation/ dislocation (6.2%).  Evidence of avascular necrosis was present in 16 of the 81 hips (19.8%).

Higher grades of hip pathology were generally associated with a later age of diagnosis and likely to require more extensive surgical interventions.

Conclusion: Operative intervention for DDH results in acceptable clinical and radiographic outcomes in the vast majority of children.

Keywords: DDH, Developmental Dysplasia of the hip, Surgery.

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How to Cite this Article:  Choudry Q, Paton RW | Surgical Treatment  of Pathological Developmental Dysplasia of the Hip: A 12-Year Study | International Journal of Paediatric Orthopaedics | May-August 2021; 7(2): 02-06.

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Reliability of a New Radiographic Classification System for Developmental Dysplasia of the Hip

Volume 6 | Issue 1 | Jan – April 2020 | Page: 16-19 | B. Pasupathy, M. Sathish

Authors : B. Pasupathy [1], M. Sathish [1]

[1] Department of Orthopaedics and Traumatology, Rajiv Gandhi Government General Hospital, Chennai, TamilNadu India.

Address of Correspondence
Dr. M.Sathish,
Institute of Orthopaedics and Traumatology, Rajiv Gandhi Government General Hospital, Chennai Tamil Nadu India.
E-mail: drsathishmuthu@gmail.com

Abstract

The Tonnis radiographic classification for developmental dysplasia of the hip (DDH) has been widely used for grading the severity of the disease. By definition, this method requires the presence of an ossification centre, which can be delayed in appearance and eccentric in location at times. The International Hip Dysplasia Institute (IHDI) classification, a new classification system recently developed by the IHDI, answers the scenario unanswered by the Tonnis classification. This study aimed to validate its reliability in evaluating DDH with an ossification center and to compare the 2 classifications in evaluating all DDH hips. In total, the pelvic radiographs of 92 DDH patients (115 hips) between the ages of 6 and 48 months between 2014 and 2017 were assessed by 3 observers retrospectively using the 2 classifications. Intraobserver and interobserver variations were evaluated using Cohen’s kappa method and graded with Munro’s correlation strength categories. Both classifications showed excellent intraobserver and interobserver reliability. However, the IHDI demonstrated more interobserver reliability, especially for evaluating DDH without an ossification center. The IHDI classification exhibited good practicability in classifying the radiographic severity of DDH compared to the Tonnis classification, particularly in hips without an ossification center. Therefore, the IHDI classification seems to be the expanded version of the Tonnis classification and can be used as a reliable tool in the management of the early stages of DDH to stage the disease and plan treatment accordingly.
Keywords: Tonnis classification, IHDI classification, DDH.

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How to Cite this Article: Pasupathy B, Sathish M.| Reliability of a New Radiographic Classification System for Developmental Dysplasia of the Hip.| International Journal of Paediatric Orthopaedics | Jan-April 2020; 6(1): 16-19.

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