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Abstract Background We hypothesized that preoperative pelvic morphology may influence postoperative anterior coverage and postoperative clinical range of motion leading to postoperative pincer type postoperative pain with postoperative pincer type femorocetabular impingement. Following periacetabular osteotomy, we wanted to determine the correlations between preoperative bone morphology and postoperative ROMs to minimize postoperative FAI. Conclusions Preoperative medial anterior CE angle was strongly correlated with the postoperative anterior CE angle, and the correlation coefficient of preoperative anterior CE and postoperative anterior CE was higher than that of preoperative anterior CE and postoperative anterior CE. Both medial CE angle through the medial one-quarter of femoral head and femoral anteversion were both significantly affected by postoperative internal rotation angle at 90°00b0° for 90 degrees in multiple linear regressions, with one fourth of femoral head and femoral anteversion being significant. Conclusions Preoperative medial anterior acetabular coverage was correlated with postoperative anterior acetabular coverage.
Source link: https://doi.org/10.1186/s13018-020-01818-z
Although several crystal structures of microbial rhodopsins have been figured out, those with sufficient resolution to identify the functional water molecules are very limited. The photochemical properties of ARI revealed that the photocycle of ARI is shorter than that of BR, and that its proton-transfer reactions are different from those of BR.
Source link: https://doi.org/10.1107/s1399004715015722
Methods A randomized controlled clinical study was published to give update on our experience with modified Stoppa as a safe surgical treatment for acetabular fractures. As a clinical case group, 18 patients with acetabular fractures treated by the classical ilioinguinal approach were retrospectively reviewed through their medical records as a controlled group, and 20 patients with acetabular fractures were treated in the period between 2017 and 2019 using the new Stoppa technique. The same surgeon and one of the co-authors operated in Al Zahra University Hospital and Nasr City Insurance Hospital. Conclusion Our results indicate that the modified Stoppa strategy is the most practical option in the treatment of anterior acetabular fractures because it increases visibility in lateral compression fractures and allows the treatment of both column fractures with single incisions.
Source link: https://doi.org/10.1186/s13018-020-01660-3
Introduction at the Vreden National Medical Research Centre for Traumatology and Orthopaedics The Vreden National Medical Research Centre for Traumatology and Orthopaedics developed an original ASPID classification for primary total hip arthroplasty in the presence of post-traumatic acetabular deformity. We wanted to see how the presence of displacement and localization of acetabular deformity, as defined by the original ASPID grading scheme, might have an effect on the acetabular deformity coverage area. With formula for each acetabular deformity and degree of congruence, the results were compared to determine the relationship between congruence, bone displacement, and bone displacement. Conclusion Screws can be used for reliable primary mechanical fixation of the pelvic component in target patients, and cavitary bone fractures can be repaired with autobone chips to increase congruence at the bone-implant interface, according to the bone-implant interface.
Source link: https://doi.org/10.18019/1028-4427-2022-28-5-698-703
Metastatic disease of the periacetabular region is a common problem in orthopaedic oncology, contributing to chronic pain, reduced mobility, and severe decline in the quality of life. Conservative management includes pain management, lifestyle enhancement, and radiation therapy. However, patients with painful lesions affecting the weight-bearing portion of the acetabulum's abdomen may require reconstructive surgery to relieve pain and restore mobility. A variety of surgical procedures have been published, the majority of which are based on cemented total hip arthroplasty, but also include porous tantalum implants and percutaneous cementoplasty.
Source link: https://doi.org/10.1177/11207000221130270
According to 8. 1 per 10,000 patients, the annual incidence of acetabularum fractures is expected to be 8. 1 per 100. 000 patients. High energy trauma is the primary mechanism in young adults, but low energy trauma in the elderly is the primary mechanism. All acetabulum fractures that result in hip joint mobility and/or incongruity have necessitate surgical intervention. Although the prognosis is poorer than in younger patients, Open Reduction Internal Fixation remains the mainstay of therapy for the majority of elderly acetabular fractures. Patients with both column, transverse, T-shaped, and anterior column-posterior hemi-transverse fractures are likely to suffer central fracture dislocation of the hip with medial migration of the quadrilateral plate. Any treatment option can cause acetabulum fractures.
Source link: https://doi.org/10.46355/hipknee.v3i1.119
Abstract Background The purpose of this review is to describe the intricate design and surgical procedures of three-dimensional -printed endoprosthesis for hemipelvic tumorous bone disease. Methods According to Enneking and Dunham's pelvic tumor resection classification, the hemipelvis is divided into three zones, including the ilium, acetabulum, and pubis and ischium. According to the remaining bone volume, different fixation techniques were used. The first sacral vestibule, the second sacral vestibule, the narrowest area of superior pubic medullary cavity, and the resected surface of a superior pubic medullary cavity were selectively measured in various fixation techniques. Endoprostheses were tied to the residual acetabulum, and residual pubis were left by stem or u201ccap-like U201d building after P3 resection, with residual pubis by stem or u201ccap-like u201d structure. Mean area of the S 1 vestibule, S2 vestibule, RSSPMC, and PSPMC were 327. 9, 131. 7, 200. 5, 200. 5, and 79. 8 mm 2, respectively. In the S1 vestibule, the number of screws designed in the ilium was 5, and in the S2 vestibule, 1, and in the pubis were 1, while in the pubis were 1. In the S 2 vestibule, the number of screws inserted in the S 1 vestibule was 4, the ilium was 3, the pubis was 1, and the ischium was 1. Conclusions This paper is the first to discuss the full concept and related surgical techniques of 3D-printed custom-made hemipelvic endoprosthesis reconstruction.
Source link: https://doi.org/10.1186/s13018-019-1455-8
After hemipelvic resection in patients with primary acetabular malignancy, we combined the use of dual mobility bearing and 3D-printed hemipelvic prosthesis to enhance function and reduce the risk of complications. The postoperative pelvis model was created and integrated into the finite element analysis software, which was embedded into the finite element analysis program. Different angles of the hip joint were used to determine the stress profile of each part of the pelvis under one gait cycle and stress distribution at different angles of the hip joint. On the MSTS-93, the average score of the remaining 8 patients was 21. 4/30, excluding 1 amputation patient. In both cases, the internal strain of polyethylene liner is greater than the outer stress. Pelvic tumor resection and reconstruction using 3D-printed hemipelvic prosthesis, combined with dual mobility bearing was an efficient treatment for pelvic tumors.
Source link: https://doi.org/10.1186/s12893-022-01804-8
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