Abstract:
:The main reason for total hip arthroplasty (THA) revision is the wear-related aseptic loosening. Younger and active patients after total joint replacement create high demands, in particular, on the bearings. The progress, especially for alumina ceramic-on-ceramic bearings and mixed ceramics have solved many problems of the past and lead to good in vitro results. Modern ceramics (alumina or mixed ceramics containing alumina) are extremely hard, scratch-resistant, biocompatible, offer a low coefficient of friction, superior lubrication and have the lowest wear rates in comparison to all other bearings in THA. The disadvantage of ceramic is the risk of material failure, i.e., of ceramic fracture. The new generation of mixed ceramics (delta ceramic), has reduced the risk of head fractures to 0.03-0.05 %, but the risk for liner fractures remains unchanged at about 0.02 %. Assuming a non-impinging component implantation, ceramic-on-ceramic bearings have substantial advantages over all other bearings in THA. Due to the superior hardness, ceramic bearings produce less third body wear and are virtually impervious to damage from instruments during the implantation process. A specific complication for ceramic-on-ceramic bearings is "squeaking". The high rate of reported squeaking (0.45 to 10.7 %) highlights the importance of precise implant positioning and the stem and patient selection. With precise implant positioning this problem is rare with many implant designs and without clinical relevance. The improved tribology and the presumable resulting implant longevity make ceramic-on-ceramic the bearing of choice for young and active patients.
journal_name
Z Orthop Unfalljournal_title
Zeitschrift fur Orthopadie und Unfallchirurgieauthors
Sentürk U,Perka Cdoi
10.1055/s-0035-1545802subject
Has Abstractpub_date
2015-04-01 00:00:00pages
198-202issue
2eissn
1864-6697issn
1864-6743journal_volume
153pub_type
杂志文章abstract:AIM:Dynamic gait analysis of blocked distal tibiofibular joint (TFJ) has not performed yet. This prospective study investigated patients treated for ankle fractures with combined syndesmotic complex lesions after surgery including tibiofibular positioning screw using CT data detecting fibular maltorsion and dynamic gai...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 临床试验,杂志文章
doi:10.1055/s-0029-1185695
更新日期:2009-07-01 00:00:00
abstract:AIM:This study evaluated the image quality of two different cone beam CT scanners used in the operation theatre in pelvic trauma surgery in relation to their radiation dosage. Furthermore, the assumption that a higher dosage would result in better image quality was analysed by using the different acquisition scanner mo...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0030-1271136
更新日期:2011-12-01 00:00:00
abstract:INTRODUCTION:Automatic power-operated windows of modern motor vehicles present a risk of injury due to jam events. CASE REPORT:A 41-year-old man suffered an injury of his gingiva upon jamming of his face between the window and seal entry. The motor vehicle window that led to the injury had no closing force restriction...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0032-1327797
更新日期:2012-12-01 00:00:00
abstract::In the history of evolution, the human foot is the youngest part of our skeleton and allows plane bipedal walking due to development of a longitudinal and transverse arch of the foot, with a stable, parallel first ray, but sacrificing the ability to grasp. Due to the loss of grasping, the hominoid mothers had to lay d...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/a-0661-6250
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:The concept of combined anteversion for total hip arthroplasty (THA) proposes a relationship between the cup and stem components that theoretically maximises the postoperative range of motion and minimises the risk for impingement of the joint. Using computer-assisted navigation tools, an anteversion angle o...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0029-1240969
更新日期:2010-03-01 00:00:00
abstract:AIM:In this prospective study we have analysed the clinical outcome of complex distal radius fractures that were reduced by a dorsal approach and fixed with 2 dorsal locking plates. METHODS:In the period from January 2006 to June 2008 60 patients with a distal intra-articular instable radius fracture, who were treated...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0029-1186156
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:Osteochondral lesions (OCL) of the talus show a distinct distribution pattern. Vascular, metabolic, idiopathic, and biomechanical factors have been proposed as influencing factors. However, the association of hindfoot alignment and the location of talar OCL is not known. MATERIALS AND METHODS:In 22 patients...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0034-1368604
更新日期:2014-08-01 00:00:00
abstract::The present refresher article highlights the current role of pedicled flaps in the reconstruction of complex wounds at the lower extremity. Due to the increasing standardization and ongoing improvements in microsurgery and in view of the fact that local tissue limitation and elevated rates of wound healing disorders r...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0043-124091
更新日期:2019-02-01 00:00:00
abstract:INTRODUCTION:Arbitration offices ("Schlichtungsstellen") in Germany are expert panels for the extrajudicial resolution of malpractice claims. The performance of arbitration panel proceedings ("Schlichtungsverfahren") is based on the German medical and insurance jurisdiction. In Germany, and in the United States likewis...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0030-1250487
更新日期:2010-12-01 00:00:00
abstract:BACKGROUND:Realisation of a major operation of tumours/metastases in the backbone is in many cases not possible, above all in older multimorbid patients with higher OP risks. So it is important to proceed here so minimally invasive as possible, but at least actually to reduce above all pain for the patient and the dang...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0034-1382936
更新日期:2014-10-01 00:00:00
abstract:BACKGROUND:Currently, short cementless femoral stems are alternative implants to treat osteoarthritis in young patients with sufficient bone quality in order to get a more proximal load transfer. The purpose of the present study was to biomechanically compare joint reconstructions resulting from implantations of a shor...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0034-1396230
更新日期:2015-02-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to estimate the influence of concomitant diseases and the cooperation of patients on the duration of rehabilitation after femoral neck fractures. MATERIAL AND METHOD:This study reviewed 493 patients with dislocated femoral neck fracture treated with hip endoprostheses. RESULTS:T...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-2008-1039160
更新日期:2009-01-01 00:00:00
abstract::Injuries to the lateral ankle ligaments are the most common sports injuries. Determination of their severity and exclusion of relevant accompanying injuries requires a subtle clinical and a focussed radiological assessment. Treatment is non-operative and functional in the majority of cases. Consequent application of o...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章,评审
doi:10.1055/s-0031-1280258
更新日期:2011-10-01 00:00:00
abstract::Background MRSA represents a considerable health threat to orthopaedic patients. Throughout the last decade, livestock-associated MRSA emerged increasingly in livestock all over Europe. LA-MRSA broke the species barrier, colonizing and causing infections in humans. Nevertheless, to date there are no studies concerning...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0043-103457
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Tibial tubercle avulsion fractures are rare, they represent less than 1% of all physeal fractures. Compared to monolateral tibial tubercle avulsion fractures, bilateral occurrence is even rarer. The purpose of this study is to report about the so far largest group of bilateral avulsion fractures and to compa...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/a-0979-2384
更新日期:2020-10-01 00:00:00
abstract:AIM:The aim of this study was to investigate hyaline cartilage defects treated with cell-seeded artificial matrix systems (two different collagen type I gels) with the method of optical coherence tomography (OCT) and to correlate the results with conventional histological and immunocytochemical staining. METHOD:Osteoc...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-2008-1038948
更新日期:2008-11-01 00:00:00
abstract:AIM:The aim of this study was to make a mid-term evaluation of an unconstrained pyrocarbon prosthesis (Ascension®) in the treatment of idiopathic degenerative arthritis of the proximal interphalangeal joint of the hand. METHOD:13 implants (10 patients) were clinically and radiologically studied after a follow-up perio...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 临床试验,杂志文章
doi:10.1055/s-0031-1298389
更新日期:2012-06-01 00:00:00
abstract::Tibial plateau fractures are complex articular injuries, especially if caused by high energy. For adequate treatment a decidedly clinical and radiographic diagnostic is required. The three-column-concept has proven as excellent surgical planningstool in this complex trauma. By (1) precisely considering the specific ch...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章,评审
doi:10.1055/s-0042-116779
更新日期:2017-06-01 00:00:00
abstract:AIM:This study investigated the fusion properties of a new intervertebral spacer that is directly fixed to the adjacent vertebrae by screws. The new spacer was compared with an identical spacer without direct fixation but with an additional plate and with an autologous bone graft. METHODS:A single-level, cervical fusi...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-2007-965798
更新日期:2007-11-01 00:00:00
abstract::Background: Placing transpedicular screws in the cervical spine is a special challenge for spine surgeons, due to the anatomical features of this part of the spine. During the last 15 years, computer-aided navigation systems have been developed to facilitate this procedure and to make it safer for patients. One option...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0042-105957
更新日期:2016-10-01 00:00:00
abstract::Background Anterior cervical corpectomy and fusion (ACCF) has become a standard procedure for patients with spondylotic myelopathy due to multisegmental stenosis of the cervical canal. Beside the fusion technique using autogenous bone grafts, synthetic cages have been increasingly used in recent years. Published infor...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0042-118717
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND:Hallux valgus is one of the most prevalent foot deformities, and surgical treatment of Hallux valgus is one of the most common procedures in foot and ankle surgery. Diagnostic and treatment standards show large variation despite medical guidelines and national foot and ankle societies. The aim of this nation...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0043-120352
更新日期:2018-04-01 00:00:00
abstract:AIMS:The combination of a distal tibia fracture with an additional upper ankle joint injury is a challenge. Apart from various implants the intraoperative problem is the handling of these two injuries with appropriate reduction and retention. The existing and further developing soft tissue damage has to be taken into c...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-2008-1039265
更新日期:2009-05-01 00:00:00
abstract::Background: The perception of back pain subjective is hard for physicians to measure. For this reason, questionnaires are an important instrument to evaluate the pain 1. The main point of this study was to verify differentiation of pain symptoms in patients with different pain mechanisms. The most important parameter ...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0042-108063
更新日期:2016-12-01 00:00:00
abstract::Historically pediatric scoliosis represents a condition deeply rooted within the origins of orthopedic surgery. Today only a few subspecialized surgeons treat pediatric scoliosis patients. In severe cases surgery can hold progression of and correct pathologic spinal curvature. The goal of this article is to provide an...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/a-0965-7760
更新日期:2020-10-01 00:00:00
abstract::Acute compartment syndrome of the lower leg following computer navigated primary total knee arthroplasty is rare but potentially devastating. This could be triggered by a setting of the bicortical tibial navigation pin. It is essential to take care during the operation, and to implement close post-operative control, e...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/a-1295-0249
更新日期:2020-12-17 00:00:00
abstract:BACKGROUND:The Surgical Safety Checklist (SSC) was introduced by the World Health Organization (WHO) in 2008 in order to analyse and reduce perioperative surgical morbidity. Preoperative estimation of the expected surgery time (EST) by the surgeon is an integral part of the SSC. OBJECTIVE:The aim of the present study ...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0042-101416
更新日期:2016-06-01 00:00:00
abstract:AIM:The aims of this review were to discuss the different mechanisms of biocorrosion of orthopaedic metal implants in the human body, as well as the effects of the released metal ions on bone metabolism and the immune system in regard to their involvement in the pathophysiological mechanisms of aseptic loosening and me...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章,评审
doi:10.1055/s-0030-1250108
更新日期:2010-08-01 00:00:00
abstract:AIM:Problems with the patellofemoral joint are still one of the most common difficulties after total knee arthroplasty. One of the main reasons for these problems seems to be the rotatory malposition of the femoral component. We examined the rotation of the femoral component and the symmetry of the flexion gap of knee ...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章
doi:10.1055/s-0029-1240587
更新日期:2011-12-01 00:00:00
abstract::In contrast to periprosthetic fractures of the femur, periprosthetic fractures of the acetabulum are rare complications - both primary fractures and fractures in revision surgery. This topic is largely under-reported in the literature; there are a few case reports and no long term results. Due to an increase in life e...
journal_title:Zeitschrift fur Orthopadie und Unfallchirurgie
pub_type: 杂志文章,评审
doi:10.1055/s-0042-113196
更新日期:2016-12-01 00:00:00