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Register a new userT.H.R with use of Acetabular Ring in Patiets with C.D.H
تبديل الورك الكامل عند مرضى عسر تصنع الجوف الحقي باستخدام حلقة الدعم
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لا يزال التهاب الورك التنكسي الثانوي لعسر تصنع الورك التطوري غير المعالج شائعاً على الرغم من المسح عند الولادات و العلاج الباكر، و إن تبديل الورك الكامل عند مرضى عسر تصنع الورك التطوري يشكل تحدياً كبيراً لجراحي العظام بسبب التبدلات التشريحية المرافقة و المخاطر التقنية المرتبطة بالضياع العظمي في الجوف الحقي. الغرض من هذه الدراسة هو رصد المشكلات السريرية و التقنية المترافقة مع إعادة بناء الورك عند مرضى عسر تصنع الجوف الحقي الولادي، و تقديم التوصيات لكيفية حل هذه المشكلات.
coxathrosis secondary to the untreated developmental dysplasia of the hip is still encountered against all the screening and early treatment methods.T.H.A in DDH presents challenging surgical problems to the orthopedic surgeons due to the associated anatomical changes and the technical difficulties related to the bone deficiency in the acetabulum. The purpose of the study is to examine the clinical and technical problems associated with reconstruction of the hip in patients with congenital dysplasia and to offer recommendations for their Solutions.
References used
Charnley,j.,and Feagin, J.A,:Low-friction arthroplasty in congenital subluxation of the hip. Clin.orthop;1973;91:98-113
Barrack,R.L.;Mulroy,R.D.,Jr;and Harris,W.H.Improved cementing techniques and femoral component loosening in young patients with hip arthroplasty.A12-year radiographic review.J.Bone and Joint surg; 1992;74- B(3):385-389
Hartofilakidis,G.;Stamos,K.;Karachalios,T.;et al. Congenital hip disease in adults. Classification of acetabular deficiencies and operative treatment with acetabulaplasty combined with total hip arthroplasty.J.bone and Joint surg;1996;78-A:683-692
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Background& Objective: The acetabular bone deficiency secondary to acetabular fractures presents a
complex clinical problem and a big challenge to the orthopedic surgeons due to the technical difficulties
related to this deficiency, considering tha
t significant number of patients treated either surgically or
without surgery will require T.H.A in the future.
The purpose of our study was to determine the outcome of T.H.R performed in patients with a history of
acetabular fracture.
Materials & Methods: We performed T.H.R in 21 patients with previous acetabular fractures in Al-Assad
Hospital between2004-2009prespectively, these cases were divided into 3 groups:
-first group formed of 7 patients were treated conservatively. Second group formed of 9 patients did an
open reduction and internal fixation by screws and plates.
-Third group formed of 5 elderly patients with fresh acetabular fractures and were treated primarily by a
total prosthesis with use a reinforcement Muller ring .
For the clinical evaluation of our cases we used the modified Harris Hip Score Scale and for the
radiological evaluation we used the Delee and Charnley scale system .
Results: Our overage Harris Hip Score was 83.(80 for the first group, 86 for the second group, and 83 for
the third group).
-No complications were encountered intraoperative, in the early postoperative period one case developed
superficial wound infection and treated by repeated dressing and antibiotic, there was one case of D.V.T
on the 4th day treated by rest and anticoagulant, and one case developed loosening of acetabular
component 8 months after T.H.A and underwent to revision.
Conclusion: T.H.R in acetabular fractures despite the difficulties faced during the procedure is a safe and
effective way to salvage the hip when secondary osteoarthritis develops, open reduction and internal
fixation of acetabular fractures may have benefits even if it fails to prevent posttraumatic arthritis
.Furthermore the clinical results of T.H.R after surgical treatment of acetabular fractures are better than
it after conservative treatment of these fractures.
Reinforcement ring is an ideal solution when the decision of T.H.R is taken as a primary treatment of
acetabular fractures depending on the indications described by Joly.
In this scientific paper we dealt with three different types of
homomorphisms between two given ideals in a ring with unity shown as
follows: ring homomorphism, R- module homomorphism and ideal
homomorphism, which were supported by several example
s.
Furthermore, we prove that the family of ideals in a ring R with ring, R -
module and ideal homomorphisms forms the category of ideals of the first,
second and third type, respectively. The next step was dedicated to support all
previous ideals by examples and functor between such categories.
This study includes ٨٠ cases of total knee Arthroplasty, They
were treated in Al-Moassat Hospital during the years ٢٠٠٠-
٢٠٠١.
Idiopathic primary osteoarthrihis was the main reason for total
knee Arthroplasly. Some cases of Rheumatoid arthritis w
ere
observed too.
The short term chinicaln gools of total arthoplasty include
restoration of the normal activity of the limb and pain relief ,
which can be obtained under the proper surgical condition,
and requirements, supported by better understanding of the
biomechanics of the knee joint and good rehabilitation there
after.
In this paper, we studied the concept of semi-potency of
endomorphism ring of modules. In addition to that, it has been
studied the endomorphism ring of semi injective ( projective)
modules and direct injective ( projective) modules.
أساس جاكبسون
الحلقات شبه الجامدة
Jacobson radical
Endomorphism rings
حلقة الإندومورفيزمات لمودول
المودولات نصف الإسقاطية ( الأفقية )
المودولات الأفقية ( الإسقاطية ) المباشرة
المودولات المنتظمة
Semi-potent rings
Semi injective ( projective) Modules
Regular modules
( Direct projective injective ( projective
المزيد..
It's considered that، the ring of linear operator of vector
space and stilled as a source of many mathematicians in general and
algebreians particularly in introducing a new concepts in algebra
and ring theory. In this subject I. Kaplansky proved
the following
theorem: "The ring of linear operators of finite dimension vector
space is regular".
The object of this paper is studying of ring of linear operator
of vector space in abstract algebra point of view.
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