scholarly journals Research and development of 3D printing orthotic insoles and preliminary treatment of leg length discrepancy patients

2020 ◽  
Vol 28 (6) ◽  
pp. 615-624
Author(s):  
Kai Wang ◽  
Chunhua Lu ◽  
Rongju Ye ◽  
Wen He ◽  
Xiating Wei ◽  
...  
Keyword(s):  
3D Printing ◽  
Research And Development ◽  
Leg Length Discrepancy ◽  
Stride Frequency ◽  
Preliminary Treatment ◽  
Functional Evaluation ◽  
Software Modeling ◽  
Leg Length ◽  
Length Discrepancy ◽  
Orthotic Insoles

BACKGROUND: Leg length discrepancy (LLD) can cause abnormal posture, muscle and/or joint pains, which leads to walking difficulties. The common treatment is to use a shoe lift on the shorter leg side, but this has unsatisfying results. OBJECTIVE: Through research and development, we created 3D printing orthotic insoles for LLD patients and aimed to improve their symptoms. METHODS: 1. Research and development of 3D printing orthotic insole: (1) foot scan and data acquisition; (2) insole software modeling; (3) 3D printing insole using TPU materials, and (4) post-processing. 2. Clinical observation: we customized insoles for LLD patients and required them to wear them while walking. We conducted general inquiries and a functional evaluation before and after 12 weeks of wearing insoles. RESULTS: There are seven complete cases. The joint and lower back pains were alleviated. The stride frequency, stride and pace were improved in all seven cases. Patients’ overall health condition improved significantly. CONCLUSIONS: The 3D printing orthotic insoles are made with clear procedures and practical operability. By wearing insoles, patients’ muscle and/or joint pains were relieved and their gaits were improved.

scholarly journals Orthotic Insoles Improve Gait Symmetry and Reduce Immediate Pain in Subjects With Mild Leg Length Discrepancy

2020 ◽  
Vol 2 ◽  
Author(s):  
Charlotte Menez ◽  
Maxime L'Hermette ◽  
Jeremy Coquart
Keyword(s):  
Sagittal Plane ◽  
Research Question ◽  
Frontal Plane ◽  
Leg Length Discrepancy ◽  
Leg Length ◽  
Gait Symmetry ◽  
Symmetry Index ◽  
Length Discrepancy ◽  
The Right ◽  
Orthotic Insoles

Background: Mild leg length discrepancy can lead to musculoskeletal disorders; however, the magnitude starting from which leg length discrepancy alters the biomechanics of gait or benefits from treatment interventions is not clear.Research question: The aim of the current study was to examine the immediate effects of orthotic insoles on gait symmetry and pain on mild leg length discrepancy according to two groups of the leg length discrepancy (i.e., LLD ≤ 1 cm vs. LLD > 1 cm).Methods: Forty-six adults with mild leg length discrepancy were retrospectively included and classified into two groups (GLLD≤1cm or GLLD>1cm). All subjects underwent routine 3D gait analysis with and without orthotic insoles. The symmetry index was calculated to assess changes in gait symmetry between the right and left limbs. Pain was rated without (in standing) and with the orthotic insoles (after 30 min of use) on a visual analog scale.Results: There was a significant improvement in the symmetry index of the pelvis in the frontal plane (p = 0.001) and the ankle in the sagittal plane (p = 0.010) in the stance with the orthotic insoles independent from the group. Pain reduced significantly with the orthotic insoles independently from the group (p < 0.001).Significance: Orthotic insoles significantly improved gait symmetry in the pelvis in the frontal plane and the ankle in the sagittal plane, as well as pain in all subjects (both LLD ≤ 1 cm and LLD > 1 cm) suggesting that it may be appropriate to treat even mild leg length discrepancy.

scholarly journals Effects of Orthotic Insoles on Gait Kinematics and Low Back Pain in Subjects with Mild Leg Length Discrepancy

2020 ◽  
Author(s):  
Charlotte Menez ◽  
Jérémy Coquart ◽  
Damien Dodelin ◽  
Claire Tourny ◽  
Maxime Lhermette
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Leg Length Discrepancy ◽  
Low Back ◽  
Leg Length ◽  
Gait Symmetry ◽  
Length Discrepancy ◽  
Ankle Kinematics ◽  
Before And After ◽  
Orthotic Insoles

Background: Mild leg length discrepancy (LLD) increases the biomechanical asymmetry during gait, which leads to low back pain (LBP). Orthotic insoles (OI) with a directly integrated heel lift were used to reduce this asymmetry and thus the associated LBP. The aim of this study was to analyze the biomechanical adaptations of the locomotor apparatus during gait and the subjective pain ratings before and after the establishment of OI use. Methods: Eight subjects with mild LLD ({less than or equal to} 2.0 cm) underwent 3-dimensional biomechanical analysis while walking, before and after 3 weeks of OI use. LBP was assessed separately before both measurement sessions using a visual analogue scale. Results: The analysis of the kinematic parameters highlighted individual adaptations. The symmetry index (SI) of Robinson indicated that OI had no significant effect on the kinematic gait parameters and an unpredictable effect across subjects. OI use significantly and systematically (in all subjects) reduced LBP (P < 0.05), which was correlated with changes in ankle kinematics (P = 0.02, r = 0.80). Conclusions: The effects of OI on gait symmetry are unpredictable and specific to each subject's individual manner of biomechanical compensation. The reduction in LBP seems associated with the improved ankle kinematics during gait.

Changes in patient-perceived leg length discrepancy following total hip arthroplasty

2021 ◽  
Author(s):  
Kentaro Iwakiri ◽  
Yoichi Ohta ◽  
Takashi Fujii ◽  
Yukihide Minoda ◽  
Akio Kobayashi ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Leg Length Discrepancy ◽  
Leg Length ◽  
Total Hip ◽  
Length Discrepancy

scholarly journals Epiphysiodesis for the treatment of tall stature and leg length discrepancy

2021 ◽  
Author(s):  
Madeleine Willegger ◽  
Markus Schreiner ◽  
Alexander Kolb ◽  
Reinhard Windhager ◽  
Catharina Chiari
Keyword(s):  
Surgical Planning ◽  
Multidisciplinary Approach ◽  
Treatment Options ◽  
Bone Age ◽  
Leg Length Discrepancy ◽  
Tall Stature ◽  
Complication Rates ◽  
Leg Length ◽  
Growth Prediction ◽  
Length Discrepancy

SummaryPainful orthopedic conditions associated with extreme tall stature and leg length discrepancy (LLD) include back pain and adopting bad posture. After failure of conservative treatment options, blocking of the growth plates (epiphysiodesis) around the knee emerged as gold standard in patients with tall stature and LLD in the growing skeleton. Surgical planning includes growth prediction and evaluation of bone age. Since growth prediction is associated with a certain potential error, adequate planning and timing of epiphysiodesis are the key for success of the treatment. LLD corrections up to 5 cm can be achieved, and predicted extreme tall stature can be limited. Percutaneous epiphysiodesis techniques are minimally invasive, safe and efficient methods with low complication rates. In general, a multidisciplinary approach should be pursued when treating children and adolescents with tall stature.

The effect of leg length discrepancy upon load distribution in the static phase (standing)

2014 ◽  
Vol 40 (4) ◽  
pp. 561-563 ◽  
Author(s):  
V. Swaminathan ◽  
M. Cartwright-Terry ◽  
J.D. Moorehead ◽  
A. Bowey ◽  
S.J. Scott
Keyword(s):  
Load Distribution ◽  
Leg Length Discrepancy ◽  
Leg Length ◽  
Length Discrepancy ◽  
Static Phase
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