Résultats de recherche pour « Elbow Method »

Total elbow replacement (TER) is a clinically successful procedure yet isolated, gross mechanical complications associated with implant durability persist. The objectives of this study were to (1) develop a clinically relevant in vitro methodology to replicate the reported damage modes and (2) demonstrate durability improvements of a next-generation linked, semiconstrained design. Two TER prostheses were tested on a biaxial test frame at 1.4 Hz in 37 ± 3° deionized water through 0° to 130° flexion/extension at various load levels simulating high demand, posttraumatic patients until either component failure or run out to 200 000 cycles. The damage patterns of tested components were qualitatively compared to retrieved components to establish the clinical validity of the methodology. The run out load of design 1 was equivalent to 100 N weight in hand (WIH). Specimens tested at higher load levels exhibited multimodal damage consistent in appearance with the clinical literature. The minimum run out load of design 2 was 110 N WIH with no significant damage observed on the components. The methodology developed here was shown to reproduce the clinical damage modes associated with TER in high demand, posttraumatic patients. The method was able to distinguish performance differences within and between 2 different linked, semiconstrained designs.

The gleno-humeral joint is by far the most mobile in the human body but also afflicted by dislocations, predominantly anterior. Surgical stabilisation is often successful but failures not uncommon. The following review describes potential causes of failure and highlights the need of adapting surgical methods to pathomorphology.

Angka Harapan Hidup (AHH) adalah indikator penting untuk mengukur kesejahteraan masyarakat dan tingkat kesehatan di suatu daerah. AHH Indonesia sangat berbeda antar provinsi, yang menunjukkan perbedaan dalam infrastruktur dan akses layanan kesehatan. Tujuan dari penelitian ini adalah untuk menggunakan algoritma K-Means untuk meklasterisasi provinsi-provinsi di Indonesia berdasarkan AHH, dan untuk mengevaluasi hasil klasterisasi dengan metode Elbow untuk menentukan jumlah klaster yang ideal. Data yang digunakan mencakup AHH dari seluruh provinsi Indonesia dalam beberapa tahun terakhir. Untuk mempermudah identifikasi daerah yang memerlukan perhatian khusus dalam perencanaan kebijakan kesehatan, provinsi diklasifikasikan ke dalam klaster berdasarkan karakteristik AHH yang sebanding. Studi ini fokus pada optimasi Algoritma K-Means dengan metode Elbow. Percobaan iterasi dilakukan sepuluh kali dan menemukan nilai K ideal, yaitu K=3. Hasil klasterisasi menunjukkan bahwa Cluster 0 memiliki 103 anggota, Cluster 1 memiliki 181 anggota, dan Cluster 2 memiliki 260 anggota. Hasil penelitian menunjukkan bahwa algoritma K-Means berhasil mengelompokkan provinsi-provinsi berdasarkan AHH dengan tingkat variasi yang rendah di setiap klaster. Metode Elbow membantu menentukan jumlah klaster yang ideal.

Background Various reduction techniques exist to treat traumatic shoulder dislocation, but best management remains unclear. Aims To investigate the reduction rate of traumatic anteroinferior shoulder dislocations using two sedation-free techniques and success rates of subgroups. Methods A single-center study was performed analysing shoulder dislocations in a two-year period. Adult patients with anteroinferior shoulder dislocation were included. Two sedation-free reduction techniques were used: the Davos self-reduction technique and the Arlt-chair technique. Two attempts were performed before sedation. All patients gave informed consent to study participation. Results The investigated 106 patients (106 shoulder dislocations) had a mean age of 48 ± 18 years (74% male patients). The majority occurred during winter sports (76%). The overall success rate for both sedation-free reduction techniques was 82% (87 reduced shoulders, two attempts). A significantly increased success rate was found in patients without greater tuberosity fracture (86% without vs. 68% with fracture, p = 0.002) and for patients with repeated dislocation (93% vs. 80% for primary dislocation, p = 0.004). Time for reduction was 5 minutes (Davos technique) and 1 minute (Arlt-chair-technique). Associated injuries were mostly Hill Sachs lesions (78%). There was no major complication and no new-onset sensory deficit. Conclusion Davos and Arlt reduction techniques allowed sedation-free and fast treatment for anteroinferior shoulder dislocation during winter sports.