نتایج جستجو برای: posterior instability

تعداد نتایج: 200850  

2015
Michael Ting Nicholas Kusnezov John Dunn

While most sternoclavicular joint (SCJ) dislocations can be managed non-operatively with closed reduction, persistent or recurrent instability associated with pain or inability to work necessitates operative management [1]. Non-operative management has further been shown to result in symptomatic degenerative changes in the SCJ [2]. Reconstruction is generally indicated in the setting of symptom...

Journal: :The Journal of the American Academy of Orthopaedic Surgeons 2005
Hannah Morgan Vincent Battista Seth S Leopold

Instability is an important cause of failure following total knee arthroplasty. Increasing component constraint may reduce instability, but doing so also can cause increased forces to be transmitted to fixation and implant interfaces, which may lead to premature aseptic loosening. Constraint is defined as the effect of the elements of knee implant design that provides the stability needed to co...

2016
Moon Soo Park Seong-Hwan Moon Tae-Hwan Kim Jae Keun Oh Ji Hoon Nam Jae Kyun Jung K. Daniel Riew

STUDY DESIGN Retrospective study. PURPOSE To propose a new radiographic index for occipito-cervical instability. OVERVIEW OF LITERATURE Symptomatic atlanto-occipital instability requires the fusion of the atlanto-occipital joint. However, measurements of occipito-cervical translation using the Wiesel-Rothman technique, Power's ratio, and basion-axial interval are unreliable because the radi...

2017
Brian J. Kelly Larry D. Field

Posterior shoulder instability occurs less often than anterior shoulder instability but is increasingly recognized as a relatively common condition. The reverse Hill-Sachs lesion is present in some patients with posterior instability and is best described as an impaction fracture of the anterior humeral head. These reverse Hill-Sachs lesions can predispose the patient to recurrent instability e...

Abdolnaser Farzan Babak Mirzashahi Hamed Mazoochy Reza Khalili Jamnani

Solitary plasmacytoma of bone is a rare malignant tumor mostly involving the axial skeleton. The tumor occurs in middle- aged or elderly people (mean age: 55 years) and has a high risk of progression to multiple myeloma. Radiotherapy is the preferred treatment for this disease. We report a case of recurrent solitary plasmacytoma of the fourth lumbar vertebra in a 35-year-old male. The patient s...

Journal: :Neurologia medico-chirurgica 2003
Akira Matsumura Kiyoyuki Yanaka Hiroyoshi Akutsu Shouzou Noguchi Takeshi Moritake Tadao Nose

A technique of combined expanding laminoplasty using longitudinal interspinous iliac bone graft with posterior lateral mass plate is described for the treatment of cervical canal stenosis associated with spinal instability. A 52-year-old male and a 76-year-old female presented with cervical myelopathy. Imaging studies demonstrated spondylotic cervical canal stenosis associated with spinal insta...

Journal: :the archives of bone and joint surgery 0
babak mirzashahi orthopaedic surgery department, imam-khomeini hospital, tehran university of medical sciences, tehran, iran hamed mazoochy orthopaedic surgery department, imam-khomeini hospital, tehran university of medical sciences, tehran, iran reza khalili jamnani orthopaedic surgery department, imam-khomeini hospital, tehran university of medical sciences, tehran, iran abdolnaser farzan neurosurgery department, mofid hospital, shahid beheshti university of medical sciences, tehran, iran

solitary plasmacytoma of bone is a rare malignant tumor mostly involving the axial skeleton. the tumor occurs in middle- aged or elderly people (mean age: 55 years) and has a high risk of progression to multiple myeloma. radiotherapy is the preferred treatment for this disease. we report a case of recurrent solitary plasmacytoma of the fourth lumbar vertebra in a 35-year-old male. the patient s...

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