To prospectively evaluate magnetic resonance (MR) imaging findings of abductor tendons and muscles in asymptomatic symptomatic patients after lateral transgluteal total hip arthroplasty (THA).The institutional review board approved the study, all provided informed consent. Two musculoskeletal radiologists blinded to clinical information analyzed triplanar MR images greater trochanter obtained 25 without 39 with trochanteric pain weakness THA. Tendon defects, diameter, signal intensity,...

We have reviewed a group of patients with iliopsoas impingement after total hip replacement radiological evidence well-fixed malpositioned or oversized acetabular component. A consecutive series 29 (30 hips) was assessed. All had undergone trial conservative management no improvement in their symptoms. Eight (eight preferred continued (group 1), and 22 hips either an tenotomy 2) revision the component debridement tendon 3), based on clinical findings. Patients were followed clinically for at...

The objective of our study was to prospectively compare the diagnostic performance MR arthrography and conventional MRI with surgical correlation in same patient for detecting labrum articular cartilage defects.Twenty-eight patients (mean age, 31.8 years) underwent arthrography, MRI, subsequent hip surgery, which served as reference standard. Labrum defects were evaluated at by two independent readers. A McNemar test kappa statistics used statistical analysis.At 31 labral tears identified....

To retrospectively assess the frequency and performance of magnetic resonance (MR) arthrography to help diagnose acetabular cartilage delamination in femoroacetabular impingement (FAI).Institutional review board approval informed consent were waived for this retrospective study. Forty-four consecutive patients with FAI cam type included (mean age, 30.7 years; range, 16-49 years), including 30 men 30.5 years) 14 women 31.4 18-48 years). The inclusion criteria no previous surgery, surgery...

The direct anterior approach in total hip replacement anatomically offers the chance to minimise soft-tissue trauma because an intermuscular and internervous plane is explored. This motivated us abandon our previously used transgluteal adopt for replacement. Using MRI, we performed a retrospective comparative study of with approach. There were 25 patients each group. At one year post-operatively all underwent MRI their replaced hips. A radiologist graded changes signals abductor muscles....

Introduction Little attention is paid to insertion site morbidity associated with antegrade femoral nailing. However, residual peritrochanteric pain after nailing not uncommon. Additionally, the end branches of medial circumflex artery (m.f.c.a.) supplying head are in close proximity nail, and occurrence avascular necrosis epiphysis adolescents rather frequent. Objective The aim this study was assess iatrogenic soft tissue injuries at nail insertion. Materials Methods Nailing a reamed AO...

To retrospectively evaluate imaging characteristics of surgically proved sublabral recesses and labral tears in the anterior portion acetabulum at magnetic resonance (MR) arthrography.Institutional review board approval was obtained; informed consent waived. The study included 57 patients (36 women [mean age, 37 years], 21 men 32 years]) who underwent MR arthrography either surgery or arthroscopy as reference standard. On images, location contrast material interposition depth, shape,...

Between June 2001 and November 2008 a modified Dunn osteotomy with surgical hip dislocation was performed in 30 hips 28 patients slipped capital femoral epiphysis. Complications clinical radiological outcomes after mean follow-up of 3.8 years (1.0 to 8.5) were documented. Subjective outcome assessed using the Harris score Western Ontario McMaster Universities osteoarthritis index questionnaire. Anatomical or near-anatomical reduction achieved all cases. The epiphysis one showed no perfusion...

In order to investigate the functional anatomy of gluteus minimus we dissected 16 hips in fresh cadavers. The muscle originates from external aspect ilium, between anterior and inferior gluteal lines, also at sciatic notch inside pelvis where it protects superior nerve artery. It inserts anterosuperiorly into capsule hip continues its main insertion on greater trochanter. Based these anatomical findings, a model was developed using plastic bones. A study mechanics showed that acts as flexor,...

Opponents associate minimally invasive total hip replacement (THR) with additional risks, potentially resulting in increased implant failure rates. The purpose was to document complications, quality of positioning and five-year survivorship THR using the AMIS approach test hypothesis that eventual high complication revision rates would be limited an early series avoided by junior surgeons who get trained a senior surgeon. A consecutive 150 primary implanted during introduction technique...

MR Arthrography of the Hip: Diagnostic Performance a Dedicated Water-Excitation 3D Double-Echo Steady-State Sequence to Detect Cartilage LesionsPatrick R. Knuesel1 2, Christian W. A. Pfirrmann1, Hubert P. Noetzli3 4, Claudio Dora3, Marco Zanetti1, Juerg Hodler1, Bernd Kuehn5 and Marius Schmid1Audio Available | Share

Retroversion of the acetabular dome has been associated with hip pain and osteoarthritis in several studies. Nevertheless, this alignment received little attention when studying radiological outcome pelvic osteotomies childhood. We therefore reviewed charts X-rays 73 patients congenital dislocations, who underwent 97 focussed our on anterior overcoverage or retroversion dome, respectively. Eighty-six Salter 11 LeCoeur were performed a mean age 4.8 years. The at last X-ray documentation was...

The industrially used flame synthesis of silica polymer fillers was extended to amorphous tricalcium phosphate (a-TCP) nanoparticles and resulted in a similar morphology as the traditionally fillers. Doping poly(lactide-co-glycolide) (PLGA) with such highly agglomerated a-TCP investigated for mechanical properties, increased vitro biodegradation formation hydroxyapatite layer on surface nanocomposite. PLGA films particle loadings ranging from 0 30 wt% were prepared by solvent casting....

Abstract The development of degradable bone cements with a mineral composition similar to natural was investigated using highly reactive calcium phosphate phases as starting materials. Mixtures XRD‐amorphous, glassy tricalcium (amorphous‐TCP) nanoparticles 25–60 nm size and micron sized, milled α‐TCP were set by hydration sodium buffer for possible application single component (CPCs). Isothermal calorimetry allowed precise tracking the setting process. Amorphous‐TCP converted into deficient...

Purpose To determine and compare the frequency of imaging abnormalities in asymptomatic symptomatic patients after arthroscopic hip surgery. Materials Methods This study was approved by institutional review board. Informed consent obtained from all patients. Thirty-four (17 17 patients) underwent 1.5-T magnetic resonance (MR) arthrography 1 year treatment femoroacetabular impingement. Two readers independently analyzed MR arthrographic images for presence abnormal findings, including...

The pathomorphology of posttraumatic acetabular dysplasia differs fundamentally from the classic developmental adolescent. aim this report is to qualify and quantify pathomorphologic characteristics define requirements for adequate corrective surgery in type dysplasia.Retrospective review anteroposterior (AP) radiographs ten patients with symptomatic dysplasia. In five cases, false profile views cases computed tomography (CT) scans were also available investigation. Measurements distances...