Abstract：
:Malposition of the acetabular component during hip arthroplasty increases the occurrence of impingement, reduces range of motion, and increases the risk of dislocation and long-term wear. To prevent malpositioned hip implants, an increasing number of computer-assisted orthopaedic systems have been described, but their accuracy is not well established. The purpose of this study was to determine the reproducibility and accuracy of conventional versus computer-assisted techniques for positioning the acetabular component in total hip arthroplasty. Using a lateral approach, 150 cups were placed by 10 surgeons in 10 identical plastic pelvis models (freehand, with a mechanical guide, using computer assistance). Conditions for cup implantations were made to mimic the operating room situation. Preoperative planning was done from a computed tomography scan. The accuracy of cup abduction and anteversion was assessed with an electromagnetic system. Freehand placement revealed a mean accuracy of cup anteversion and abduction of 10 degrees and 3.5 degrees, respectively (maximum error, 35 degrees). With the cup positioner, these angles measured 8 degrees and 4 degrees (maximum error, 29.8 degrees), respectively, and using computer assistance, 1.5 degrees and 2.5 degrees degrees (maximum error, 8 degrees), respectively. Computer-assisted cup placement was an accurate and reproducible technique for total hip arthroplasty. It was more accurate than traditional methods of cup positioning.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Jolles BM,Genoud P,Hoffmeyer Pdoi
10.1097/01.blo.0000141903.08075.83subject
Has Abstractpub_date
2004-09-01 00:00:00pages
174-9issue
426eissn
0009-921Xissn
1528-1132pii
00003086-200409000-00028pub_type
杂志文章abstract：:Dislocation after hip replacement occurs at an overall incidence of 2% to 3% and has significant cost and morbidity implications. Statistically increased incidence is observed in females and in the elderly, and after reoperation procedures. Specific causes include cup malrotation, trochanteric migration, and decreased...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-11-01 00:00:00
abstract：BACKGROUND:Serum C-reactive protein (CRP) is a general marker of inflammation, and recent studies suggest that measurement of CRP in synovial fluid may be a more accurate method for diagnosing periprosthetic joint infection (PJI). QUESTIONS/PURPOSES:We aimed to (1) determine if there is a correlation between serum and...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-014-3828-y
更新日期：2014-12-01 00:00:00
abstract：:The Ilizarov technique was used for lengthening 13 forearms in 12 patients. The different types of treatment were: lengthening of the radius alone, lengthening of the ulna alone with or without radial head relocation, lengthening of one-bone forearms, lengthening of the radius and ulna to the same extent, and differen...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:Intraoperative proximal femur fractures are a significant concern during noncemented total hip arthroplasty. The current study was performed to investigate the hypothesis that broaching the femur and inserting the stem without using mallet applied impact loads will reduce the risk of intraoperative fracture. Rosette s...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200001000-00025
更新日期：2000-01-01 00:00:00
abstract：:In the process of prosthetic loosening, the initial motion of the implant relative to the bone is a key element. In order to provide quantitative information, three straight and one curved cementless hip stems were submitted to in vitro tests in autopsy specimens of the femur under dynamic axial and torsional loads wi...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1989-11-01 00:00:00
abstract：BACKGROUND:More than 100 MRIs per 1000 inhabitants are performed in the United States annually, more than almost every other country. Little is known regarding the cost of obtaining an MRI and factors associated with differences in cost. QUESTIONS/PURPOSES:By surveying all hospital-owned and independent imaging center...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-5181-9
更新日期：2017-03-01 00:00:00
abstract：:The patella is an important functional component of the knee extension mechanism. It accounts for 13 to 30% of the knee extensors' moment arm. Functional deficits owing to patellectomy include decreased knee extension power, extension lag, instability, chronic effusion, decreased stance phase flexion, alteration of th...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-10-01 00:00:00
abstract：:Subspecialty certification in hand surgery was instituted in 1989 by the collaborative efforts of the American Boards of General Surgery, Plastic Surgery, and Orthopaedic Surgery. Candidates must be certified by their parent board and have demonstrated qualifications in hand surgery beyond those expected of other Boar...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/01.blo.0000224041.77215.b6
更新日期：2006-08-01 00:00:00
abstract：:We questioned whether our current preoperative demand matching accurately predicted patient activity after TKA. From a prospective database we reviewed 511 patients who had unilateral, primary TKA from 1994 to 1999 and who were preoperatively assessed for five patient characteristics: age, weight, expected postoperati...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000229361.12244.2d
更新日期：2006-11-01 00:00:00
abstract：BACKGROUND:Osteoid osteomas consist of a nidus surrounded by reactive sclerotic bone. The diagnosis typically is based on imaging and clinical presentation involving nocturnal pain. Removal of the lesion is essential and currently is performed mainly with image-guided, minimally invasive techniques. We describe a case ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2772-y
更新日期：2013-05-01 00:00:00
abstract：:It is now well established that the meniscus performs a number of roles that are important to the efficient performance of the knee joint. Of particular importance is the recognition of its load-bearing function and its stabilization of the joint during flexion-extension. The compression of the wedge-shaped meniscus d...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1987-11-01 00:00:00
abstract：UNLABELLED:Risk factors to explain the poor survival of patients with osteosarcoma of the pelvis are poorly understood. Therefore, we attempted to identify factors affecting survival and development of local recurrence and metastasis. We retrospectively reviewed 43 patients who had high-grade pelvic tumors and were tre...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0495-x
更新日期：2009-02-01 00:00:00
abstract：:In this study, the authors investigated enhancing the results of autoclaved autograft bone by combining it with a vascularized bone graft and supplementing it with autogenous bone marrow for replacement of a 2-cm tibial defect in the rabbit model. The study was divided into 4 groups. Group I consisted of autoclaved au...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:A resurgence of classic vitamin D deficiency rickets has been noted in the recent pediatric literature, but no mention of it appears in recent orthopedic journals. Three cases of vitamin D deficiency rickets occurred in children whose ages ranged from 14 to 17 months. Similar to the experience of others, all three occ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1987-11-01 00:00:00
abstract：:Despite the clinical success of total knee arthroplasty, little information can be found in the literature about the relationship between certain postoperative physical findings and the outcome. Specifically, is the range of motion related to patient perception of outcome? We performed a cohort prospective study on 48...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/BLO.0b013e318046ccb7
更新日期：2007-07-01 00:00:00
abstract：:One hundred seventy-three cases of intertrochanteric fractures treated by internal fixation are reviewed: 72 treated with the Jewett nail and 101 with the Richards compression hip screw. Both devices maintained adequate reduction in the majority of cases. Treatment failure: loss of fixation, symptomatic joint penetrat...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1980-01-01 00:00:00
abstract：:Management of nonunions requires careful and critical assessment of the true biologic status of the fracture. The mere radiographic persistence of a fracture line does not invariably indicate nonunion. Ten percent of fractures considered initially to be ununited in this series healed spontaneously without further trea...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1981-11-01 00:00:00
abstract：:Partial rupture of the distal biceps tendon is a relatively rare event, and various degrees of partial tendon tears have been reported. In the current study four patients with partial atraumatic distal biceps tendon tears (mean age, 59 years; range, 40-82 years) are reported. In all four patients, a common clinical pa...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200005000-00018
更新日期：2000-05-01 00:00:00
abstract：BACKGROUND:Most patients expect an improvement of walking ability and an increase in activity levels after TKA. Unfortunately, few studies report qualitative and quantitative activity improvements after TKA. QUESTIONS/PURPOSES:The aims of this study were (1) to evaluate quantity and quality of physical activity before...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-014-3813-5
更新日期：2014-12-01 00:00:00
abstract：:Adhesive capsulitis occurs as a pathologic entity in the shoulder, hip, and ankle joints. Thickening and contracture of the wrist joint capsule were demonstrated on arthrograms performed on ten patients ranging in age from 20 to 82 years. The patients had pain and limited range of motion in the wrist. The findings inc...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1988-09-01 00:00:00
abstract：:Known for its resistance to chemotherapy and radiation therapy, chondrosarcoma remains largely a surgically managed tumor predisposed to local recurrence and late distant metastasis. A 42-year-old man with known thoracic chondrosarcoma developed progressive low back pain, lower extremity weakness, and urinary incontin...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1993-09-01 00:00:00
abstract：:The Ilizarov external fixator exhibits more isotropic mechanical properties in bending and nonlinear axial stiffness than do unilateral and bilateral external fixators. Each frame element--wire size, tension, and orientation, as well as ring type--contributes to overall frame rigidity and stability. These factors and ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-07-01 00:00:00
abstract：:Ninety-one cases of histologically confirmed osteoid osteoma were collected during an 11-year period; of them, seven (7.6%) had onset of symptoms while younger than five years of age. Special diagnostic difficulties were found in this specific age group: most cases were misdiagnosed or diagnosed incorrectly. The time ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-11-01 00:00:00
abstract：:In the case of fractures of the middle one-third of the forearm that are several weeks old, the procedure is as follows. Use a brachial block or general anesthesia. Open the radial fracture by freeing up the fracture site and clearing the medullary canals. About a 4-cm longitudinal incision is made over the dorsal asp...
journal_title：Clinical orthopaedics and related research
pub_type： 传,古典文章,历史文章,杂志文章
doi：
更新日期：1988-09-01 00:00:00
abstract：BACKGROUND:Lisfranc (tarsometatarsal joint) injuries are relatively rare, accounting for less than 1% of all fractures, and as many as 20% of subtle Lisfranc injuries are missed at the initial patient presentation. An undiagnosed Lisfranc injury can have devastating consequences to the patient. Therefore, any factor th...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-5131-6
更新日期：2017-05-01 00:00:00
abstract：BACKGROUND:The antifibrinolytic tranexamic acid reduces surgical blood loss, but studies have not identified an optimal regimen. QUESTIONS/PURPOSES:We studied different dosages, timings, and modes of administration to identify the most effective regimen of tranexamic acid in achieving maximum reduction of blood loss i...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s11999-012-2310-y
更新日期：2012-09-01 00:00:00
abstract：BACKGROUND:During hip arthroplasties for treating proximal femur metastases, a long femoral stem frequently is used, presumably protecting the entire femur against progression of the existing lesions or development of new lesions. However, it is unclear whether a long stem is really required. QUESTIONS/PURPOSES:We the...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-013-2790-4
更新日期：2013-05-01 00:00:00
abstract：:The structure of the extracellular matrix of articular cartilage varies considerably with age. These changes are attributable to variations in molecular abundance and structure, and they can affect all the matrix components, but none more so than the proteoglycans. Some of these changes are attributable to variations ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-200110001-00015
更新日期：2001-10-01 00:00:00
abstract：:Postoperative prophylaxis with antiinflammatory medications, primarily indomethacin, is extremely effective in preventing the severest degrees of heterotopic ossification (HO) after a total hip arthroplasty (THA) and the recurrence of excised HO developed after a previous hip surgery. Prophylaxis with indomethacin sho...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1991-02-01 00:00:00
abstract：BACKGROUND:The main static stabilizers of the medial knee are the superficial medial collateral and posterior oblique ligaments. A number of reconstructive techniques have been advocated including one we describe here. However, whether these reconstructions restore function and stability is unclear. DESCRIPTION OF TEC...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2061-1
更新日期：2012-03-01 00:00:00
