A study of the effect of the femoral head diameter on prosthetic hip joint dislocation using a hip-joint motion simulator

Author(s):  
K. Kiguchi ◽  
T. Horie ◽  
A. Yamashita ◽  
M. Ueno ◽  
T. Kobayashi ◽  
...  
2017 ◽  
Vol 27 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Carlos Suarez-Ahedo ◽  
Chengcheng Gui ◽  
Timothy J. Martin ◽  
Sivashankar Chandrasekaran ◽  
Parth Lodhia ◽  
...  

Purpose To compare the acetabular component size relative to the patient's native femoral head size between conventional THA (CTHA) approach and robotic-arm assisted THA (RTHA) to infer which of these techniques preserved more acetabular bone. Methods Patients were included if they had primary osteoarthritis (OA) and underwent total hip replacement between June 2008 and March 2014. Patients were excluded if they had missing or rotated postoperative anteroposterior radiographs. RTHA patients were matched to a control group of CTHA patients, in terms of preoperative native femoral head size, age, gender, body mass index (BMI) and approach. Acetabular cup size relative to femoral head size was used as a surrogate for amount of bone resected. We compared the groups according to 2 measures describing acetabular cup diameter ( c) in relation to femoral head diameter ( f): (i) c-f, the difference between cup diameter and femoral head diameter and (ii) ( c-f)/ f, the same difference as a fraction of femoral head diameter. Results 57 matched pairs were included in each group. There were no significant differences between groups for demographic measures, femoral head diameter, or acetabular cup diameter (p>0.05). However, measures (i) and (ii) did differ significantly between the groups, with lower values in the RTHA group (p<0.02). Conclusions Using acetabular cup size relative to femoral head size as an approximate surrogate measure of acetabular bone resection may suggest greater preservation of bone stock using RTHA compared to CTHA. Further studies are needed to validate the relationship between acetabular cup size and bone loss in THA.


2007 ◽  
Vol 2007 (0) ◽  
pp. _1A2-K08_1-_1A2-K08_2
Author(s):  
Makoto SASAKI ◽  
Kazuo KIGUCHI ◽  
Akira YAMASHITA ◽  
Masaru UENO ◽  
Tsuneyuki KOBAYASHI ◽  
...  

2021 ◽  
pp. 286-293
Author(s):  
Zhouyao Weng ◽  
Xiuling Huang ◽  
Zikai Hua ◽  
Qinye Wang ◽  
Leiming Gao

Author(s):  
Liliya I. DUBROVINA ◽  
Galina I. DERYABINA ◽  
Viktoriya L. LERNER

Hip joint dysplasia among children - congenital hypoplasia of femoral head, or congenital increased mobility of the joint due to the weakness of the ligamentous and muscular apparatus. Such a violation of the hip joint elements development (one or both) leads to an incorrect interposition of the joint structures, whereby the femoral head is displaced relative to the articular surface, formed subluxation, pre-dislocation or joint dislocation. This is a severe and common disease of the musculoskeletal system. Since medical treatment for dysplasia among newborn is not provided, and surgery is required only in extreme cases, therefore, active methods in the fight against this pathology are: specific orthopedic devices, physiotherapy, massage and exercise therapy. Thanks to these components, treatment therapy will strengthen the muscles, accelerate recovery, it will be fast and unobtrusive for the child. In this regard, we have developed the structure and content of physical rehabilitation for infants with hip joint dysplasia. This course was designed for four weeks and was developed a set of rehabilitation measures. The content of the course of physical rehabilitation includes orthopedic correction with the help of special devices, massage, therapeutic gymnastics in combination with fitball gymnastics and therapeutic swimming, physiotherapy. To assess the effectiveness of the physical rehabilitation program developed by us, we conduct an ascertaining pedagogical experiment - testing, clearly demonstrating the functional and motor state of the hip joints of the subjects before the beginning of the forming pedagogical experiment and at its end.


2017 ◽  
Vol 66 ◽  
pp. S22
Author(s):  
Diana Laishram ◽  
Shanta Chandrasekaran ◽  
Deepti Shastri

2013 ◽  
Vol 24 (6) ◽  
pp. 947-951 ◽  
Author(s):  
Yanbo Zhang ◽  
Jinlan Jiang ◽  
Chenyu Wang ◽  
Jianlin Zuo ◽  
Modi Yang ◽  
...  

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