scholarly journals Increased Loading Rates During Gait Correlate With Morphology of Unaffected Hip in Juveniles With Treated Developmental Hip Dysplasia

2021 ◽  
Vol 9 ◽  
Author(s):  
Wei-Chun Lee ◽  
Tsan-Yang Chen ◽  
Li-Wei Hung ◽  
Ting-Ming Wang ◽  
Chia-Hsieh Chang ◽  
...  
Keyword(s):  
Hip Dysplasia ◽  
Morphological Changes ◽  
Unaffected Side ◽  
Developmental Hip Dysplasia ◽  
Loading Rates ◽  
Axial Forces ◽  
Affected Side ◽  
Radiographic Measurements ◽  
Loading And Unloading

Long-term follow-up studies on children with surgically treated developmental dysplasia of the hip (DDH) have shown that not only the affected side progresses to premature osteoarthritis, but the unaffected side may also suffer from insidious hip dysplasia or osteonecrosis. The current gait analysis study identified the loading and unloading rates of the ground reaction forces (GRF) and lower limb joint axial forces during gait, and their correlations with the hip morphology in twenty juvenile patients with surgically treated unilateral DDH during toddlerhood. In a gait laboratory, each subject walked at preferred speed on a 10-m walkway while the kinematics and the GRF were measured. Loading and unloading rates of the vertical GRF and the joint axial forces were obtained as the maximum instantaneous slope of these force curves. Radiographic measurements of the hips were taken, and the correlations between the morphological parameters and the loading and unloading rates were obtained. The patients showed greater-than-normal peak loading rates of the joint axial forces, and the loading rates on both the affected and unaffected sides were strongly correlated to the acetabular index on the unaffected side, which was also significantly correlated with the peak unloading rates on the affected side. These results suggest that apart from regular follow-up of the affected hip, routine assessment of the morphological changes and/or increased loading rates on the unaffected hip is also important for early identification of any signs of insidious hip dysplasia and risk of premature degeneration of the cartilage.

scholarly journals Increased Loading Rates During Gait Correlate with Morphology of Unaffected Hip in Juveniles with Treated Developmental Hip Dysplasia

2021 ◽  
Author(s):  
Wei-Chun Lee ◽  
Tsan-Yang Chen ◽  
Li-Wei Hung ◽  
Ting-Ming Wang ◽  
Chia-Hsieh Chang ◽  
...  
Keyword(s):  
Hip Dysplasia ◽  
Morphological Changes ◽  
Unaffected Side ◽  
Developmental Hip Dysplasia ◽  
Loading Rates ◽  
Axial Forces ◽  
Affected Side ◽  
Radiographic Measurements ◽  
Loading And Unloading

Abstract Long-term follow-up studies on children with surgically treated developmental dysplasia of the hip (DDH) have shown that not only the affected side progresses to premature osteoarthritis, but the unaffected side may also suffer from insidious hip dysplasia or osteonecrosis. The current gait analysis study identified the loading and unloading rates of the ground reaction forces (GRF) and lower limb joint axial forces during gait, and their correlations with the hip morphology in twenty juvenile patients with surgically treated unilateral DDH during toddlerhood. Radiographic measurements of the hips were taken, and the correlations between the morphological parameters and the loading and unloading rates were obtained. The patients showed greater-than-normal peak loading rates of the joint axial forces, and the loading rates on both the affected and unaffected sides were highly correlated to the acetabular index on the unaffected side, which was also significantly correlated with the peak unloading rates on the affected side. These results suggest that apart from regular follow-up of the affected hip, routine assessment of the morphological changes and/or increased loading rates of the unaffected hip is also important for early identification of any signs of insidious hip dysplasia and risk of premature degeneration of the cartilage.

MODULUS Stem for Developmental Hip Dysplasia: Long-term Follow-up

2015 ◽  
Vol 30 (10) ◽  
pp. 1747-1751 ◽  
Author(s):  
Francesco M. Benazzo ◽  
Lucio Piovani ◽  
Alberto Combi ◽  
Loris Perticarini
Keyword(s):  
Hip Dysplasia ◽  
Developmental Hip Dysplasia ◽  
Long Term Follow Up

scholarly journals The Ilizarov technology for closed reduction of hip dislocation in children with developmental hip dysplasia

2021 ◽  
Vol 27 (3) ◽  
pp. 345-350
Author(s):  
M.P. Teplenky ◽  
◽  
E.V. Oleinikov ◽  
V.S. Bunov ◽  
◽  
...  
Keyword(s):  
Closed Reduction ◽  
Functional Outcomes ◽  
Hip Dysplasia ◽  
Hip Dislocation ◽  
Treatment Method ◽  
Long Term Results ◽  
Aseptic Necrosis ◽  
Developmental Hip Dysplasia

Introduction The possibility of gradual closed reduction of hip dislocation in children over 1.5 years old is considered doubtful. Purpose Analysis of long-term results of applying the Ilizarov technique of gradual closed reduction in combination with the reconstruction of the hip joint components. Methods The outcomes of treatment of 62 children (81 joints) with congenital hip dislocation in the follow-up period from 5 to 16 years were studied. The treatment method included closed reduction of the dislocation using the technology proposed by G.A. Ilizarov and subsequent reconstruction of the joint components. The patients are divided into two groups based on their age. The first group included 33 patients (43 joints) under the age of 5 years. The second group consisted of 29 patients (38 joints) aged 5–8 years. Results Closed reduction failed in five cases. The recurrence of dislocation after closed reduction was 5.3 %. The rate of aseptic necrosis after closed reduction was 9.7 %. Good functional outcomes were reported in 87.7 %. They were significantly better in the younger group. The proportion of good anatomical results did not depend on age and was 77 % in general. Poor results were obtained in 8.8 %. Conclusion The anatomical and functional outcomes and the number of complications by using the technique described were comparable to other methods of gradual closed reduction of hip dislocation. But the technique we have described expands the age restrictions for its use.

scholarly journals The Morphology of Patella changed significantly after Soft Tissue Correction for children with Recurrent Patella Dislocation

2020 ◽  
Author(s):  
Jinghui Niu ◽  
Qi Qi ◽  
Kuo Hao ◽  
Wei Lin ◽  
Kang Piao ◽  
...  
Keyword(s):  
Patellar Dislocation ◽  
Morphological Characteristics ◽  
Recurrent Dislocation ◽  
Patella Dislocation ◽  
Transverse Diameter ◽  
Unaffected Side ◽  
Femoral Trochlea ◽  
Affected Side ◽  
Wiberg Index

Abstract Background: Although morphological improvement of femoral trochlea has been investigated in children with patellar dislocation after surgery, whether the patellar shape changed under the same condition is still unknown. The purpose of the study was to investigate the changes of patella morphology in transverse plane following surgical correction of recurrent patella dislocation in children.Methods: A total of 22 patients with a mean age of 9.9 years (7 to 12) were included. All had unilateral recurrent patella dislocation. The knees with recurrent patellar dislocation were treated with medial patellar retinaculum plasty and defined as the affected side. The contralateral knees with no symptom of patellar instability were considered as the unaffected side. All patients were treated between October 2014 and August 2018. Axial CT (Computed Tomography) scans were undertaken in all patients to assess the patella morphological characteristics on a particular axial image preoperatively and at the final follow-up.Results: There were not significant differences about patellar transverse diameter, thickness and Wiberg angle between affected side and unaffected side before surgery and at the last follow-up respectively ( The mean follow-up period: 28.0 ± 3.3 months). However, before surgery, the Wiberg-index in the affected side (0.74 ± 0.06) was significantly different from that in the unaffected side (0.64 ± 0.04). At the last follow-up, the Wiberg-index in the affected side (0.67 ± 0.05) and the unaffected side (0.65 ± 0.04) were not significantly different. Also, in the affected side, the Wiberg-index at the last follow-up was significantly lower than that before surgery (P < 0.05). The Wiberg-index in the unaffected side was not significantly different before surgery and at the last follow-up. Conclusion: The patella morphology can change significantly after surgical procedures in children with patellar recurrent dislocation whose epiphysis is not closed.

Total Hip Arthroplasty in Developmental Hip Dysplasia Using Cementless Tapered Stem. Results after a Minimum 10-Year Follow-Up

2011 ◽  
Vol 21 (4) ◽  
pp. 415-420 ◽  
Author(s):  
Cesare Faldini ◽  
Matteo Nanni ◽  
Danilo Leonetti ◽  
Maria Teresa Miscione ◽  
Francesco Acri ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Hip Dysplasia ◽  
Developmental Hip Dysplasia ◽  
Total Hip ◽  
Tapered Stem

scholarly journals The Morphology of Patella changed significantly after Soft Tissue Correction for children with Recurrent Patella Dislocation

2020 ◽  
Author(s):  
Jinghui Niu ◽  
Qi Qi ◽  
Kuo Hao ◽  
Wei Lin ◽  
Kang Piao ◽  
...  
Keyword(s):  
Patellar Dislocation ◽  
Patella Dislocation ◽  
Transverse Diameter ◽  
Recurrent Patellar Dislocation ◽  
Unaffected Side ◽  
Femoral Trochlea ◽  
Affected Side ◽  
Wiberg Index ◽  
Patellar Morphology

Abstract Background: Although morphological improvement of femoral trochlea has been investigated in children with patellar dislocation after surgery, whether the patellar shape changed under the same condition is still unknown. The purpose of the study was to investigate the changes of patellar morphology in transverse plane following surgical correction of recurrent patella dislocation in children.Methods: A total of 22 patients with a mean age of 9.9 years (7 to 12) were included. All had unilateral recurrent patellar dislocation. The knees with recurrent patellar dislocation were treated with medial patellar retinaculum plasty and defined as the affected side. The contralateral knees with no symptom of patellar instability were considered as the unaffected side. All patients were treated between October 2014 and August 2018. Axial CT (Computed Tomography) scans were undertaken in all patients to assess the patella morphological characteristics on a particular axial image preoperatively and at the final follow-up.Results: There were not significant differences about patellar transverse diameter, thickness and Wiberg angle between affected side and unaffected side before surgery and at the last follow-up respectively ( The mean follow-up period: 28.0 ± 3.3 months). However, before surgery, the Wiberg-index in the affected side (0.74 ± 0.06) was significantly different from that in the unaffected side (0.64 ± 0.04). At the last follow-up, the Wiberg-index in the affected side (0.67 ± 0.05) and the unaffected side (0.65 ± 0.04) were not significantly different. Also, in the affected side, the Wiberg-index at the last follow-up was significantly lower than that before surgery (P < 0.05). The Wiberg-index in the unaffected side was not significantly different before surgery and at the last follow-up. Conclusion: The patellar morphology can change significantly after surgical procedures in children with patellar recurrent dislocation whose epiphysis is not closed.

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