Mid-term Functional Comparisons of Unilateral and Bilateral Developmental Dysplasia of the Hip
Condition: Developmental Dysplasia of the Hip
MeSH terms: Developmental Dysplasia of the Hip; Hip Dislocation, Congenital
Study type: Observational

Summary: 
      The annual number of live births in Türkiye is 1,112,859 in 2020 and the estimated incidence
      of developmental dysplasia of the hip (DDH) is between 5 and 15 per 1000 live births. The
      implementation of the National DDH Early Diagnosis and Treatment Program by the Türkiye
      Republic of the Ministry of Health in 2010 significantly reduced the number of patients with
      DDH diagnosed more than 6 months later. If not appropriately treated, DDH can cause a
      decrease in the number of healthy life years, and workforce losses, which consequently
      burdens the social security system and government budget. The vast majority of clinical
      trials comprise risk factors associated with complications after treatment of DDH. Moreover,
      studies involving functional assessments are generally focused on adult DDH patients with
      surgical indications. To the best of the investigators' knowledge, mid-term patient-reported
      and performance-based functionality has not been examined in conservatively treated patients.
      In addition, it is not known whether the diagnosis of unilateral and bilateral DDH in these
      patients will make a difference in daily activities which require bilateral functionality of
      the lower limbs. Therefore, in this study, the investigators examined and compared the
      mid-term patient-reported and performance-based functional outcomes in patients with
      unilateral and bilateral DDH treated with a hip abduction brace. This study provides new data
      on mid-term functionality in children with unilateral and bilateral DDH. It can guide
      determining the lower extremity functional levels of school-age children with DDH, regular
      follow-up, early diagnosis, and treatment planning for problems.
    

Detailed description: 
      The annual number of live births in Türkiye is 1,112,859 in 2020 and the estimated incidence
      of developmental dysplasia of the hip (DDH) is between 5 and 15 per 1000 live births. The
      implementation of the National DDH Early Diagnosis and Treatment Program by the Türkiye
      Republic of the Ministry of Health in 2010 significantly reduced the number of patients with
      DDH diagnosed more than 6 months later. If not appropriately treated, DDH can cause a
      decrease in the number of healthy life years, and workforce losses, which consequently
      burdens the social security system and government budget. The vast majority of clinical
      trials comprise risk factors associated with complications after treatment of DDH. Moreover,
      studies involving functional assessments are generally focused on adult DDH patients with
      surgical indications. To the best of the investigators' knowledge, mid-term patient-reported
      and performance-based functionality has not been examined in conservatively treated patients.
      In addition, it is not known whether the diagnosis of unilateral and bilateral DDH in these
      patients will make a difference in Daily activities which require bilateral functionality of
      the lower limbs. Therefore, in this study, the investigators examined and compared the
      mid-term patient-reported and performance-based functional outcomes in patients with
      unilateral and bilateral DDH treated with a hip abduction brace. This study provides new data
      on mid-term functionality in children with unilateral and bilateral DDH. It can guide
      determining the lower extremity functional levels of school-age children with DDH, regular
      follow-up, early diagnosis, and treatment planning for problems.

      The vast majority of clinical trials comprise risk factors associated with complications
      after treatment of DDH. Moreover, studies involving functional assessments are generally
      focused on adult DDH patients with surgical indications. To the best of the investigators'
      knowledge, mid-term patient-reported and performance-based functionality has not been
      examined in conservatively treated patients. In addition, it is not known whether the
      diagnosis of unilateral and bilateral DDH in these patients will make a difference in
      activities such as jumping rope, double-leg jumping, walking, and dynamic balance, which
      require bilateral functionality of the lower limbs. Therefore, the aim of this study is to
      examine and compare the mid-term patient-reported and performance-based functional outcomes
      in patients with unilateral and bilateral DDH treated with a hip abduction brace.
    

Observational model: Case-Only
Time perspective: Retrospective
Sampling method: Non-Probability Sample
Study population: 
        Patients who were treated with hip abduction brace in the orthopedics and traumatology
        department of a university hospital from January 2010 to January 2016 were screened from
        the hospital registry system. Eligible 72 patients were contacted by telephone and invited
        to participate in the present study and 54 patients agreed to participate. A total of 35
        patients were able to complete all assessments and their data were analyzed. 16 patients
        had unilateral and 19 patients had bilateral developmental dysplasia of the hip.