نتایج جستجو برای: tunnel portal
تعداد نتایج: 67693 فیلتر نتایج به سال:
BACKGROUND It is common to place the posterior cruciate ligament (PCL) tibial tunnel with a transtibial technique using a guide that attempts to place the center of the tunnel 1 to 1.5 cm distal to the tibiofemoral joint. It is unknown how well this technique will re-create the native tibial footprint of the PCL. PURPOSE To evaluate the accuracy of tibial tunnel placement using a transtibial ...
Introduction: Although the results of anterior cruciate ligament (ACL) reconstruction are well documented in many studies, with good to excellent outcomes in most cases, some issues like tunnel positioning are still discussed and studied. Objective: To compare the objective and subjective clinical outcomes of ACL reconstruction using the transtibial and anteromedial portal techniques. Methods: ...
From September 1995 to July 1996 50 patients were treated for carpal tunnel syndrome as outpatients by endoscopic release in the rooms of an orthopaedic surgeon (two-portal-technique). The average age was 51.3 years (27-61 years). The average length of symptoms was 43 months, the postoperative time off work averaged 27 days. Six months postoperatively wasting of the thenar persisted in 2 out of...
OBJECTIVE The objective of our study was to evaluate the effect that knee flexion angle while femoral tunnels are being drilled may have on the length of these tunnels, in anatomical reconstruction of the anterior cruciate ligament. METHODS We measured the lengths of anteromedial and posterolateral tunnels for the anterior cruciate ligament in 20 unpaired anatomical knee specimens (10 right a...
AIM To quantitatively assess rotatory and anterior-posterior instability in vivo after anterior cruciate ligament (ACL) reconstruction using bone-patellar tendon-bone (BTB) autografts, and to clarify the influence of tunnel positions on the knee stability. METHODS Single-bundle ACL reconstruction with BTB autograft was performed on 50 patients with a mean age of 28 years using the trans-tibia...
The increase in the number of traffic accidents due to increasing urban underpass tunnels necessitate a better investigation drivers’ visual characteristics when entering tunnels. A total 20 drivers were gathered perform real vehicle experiment an tunnel. saccade angle, frequency, and fixation time selected as research indexes. tunnel entrance was divided into five sections, namely external str...
BACKGROUND Recently, anatomic anterior cruciate ligament (ACL) reconstruction is emphasized to improve joint laxity and to potentially avert initiation of cartilage degeneration. There is a paucity of information on the efficacy of ACL reconstructions by currently practiced tunnel creation techniques in restoring normal joint laxity. STUDY DESIGN Controlled laboratory study. HYPOTHESIS Ante...
Tunnel portal sections always suffer serious damage under strong earthquakes. This paper aims to study the seismic performance of lining strengthening method in soft rock section by employing model test. Firstly, shaking table test considering cases, modified input motions, boundary condition, and monitoring equipment are conducted simulate response tunnel section. Then, increasing concrete gra...
BACKGROUND Little is known about surgeon agreement and accuracy using arthroscopic evaluation of anterior cruciate ligament (ACL) tunnel positioning. PURPOSE To investigate agreement on ACL tunnel position evaluated arthroscopically between operating surgeons and reviewing surgeons. We hypothesized that operating and evaluating surgeons would characterize tunnel positions significantly differ...
The objective of this research is to evaluate the stability natural slopes at inlet and outlet portals Bolangu Ulu diversion tunnel, Gorontalo. were considered stable, therefore slope analyses not carried out previously in tunnel portal design. using Circular Failure Chart (CFC) Limit Equilibrium Methods (LEM). Input data for obtained from field mapping laboratory testing soil rock samples. res...
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