Abstract：
:Long-term effects (104 weeks) of 2 extremes of gap size on the mechanical behavior of the rabbit medial collateral ligament were examined. In the midsubstance of each right medial collateral ligament, either an 8 mm gap injury was created or a 4 mm Z plasty injury was created and repaired. Each group was subdivided into a healing interval of 40, 78, or 104 weeks. Femur-medial collateral ligament-tibia complexes were tested mechanically or examined with light microscopy. Both injuries healed with histologically similar tissue and showed improved mechanical behavior 78 weeks after injury. No further improvement was measurable 104 weeks after injury. Scar material properties remained markedly inferior to normal regardless of injury. Low load and viscoelastic behavior recovered relatively well regardless of gap size. However, gap injuries showed significantly inferior structural properties at all intervals. These results suggest that a large initial gap between ligament ends in the extraarticular space predisposes scars to long term structural weakness. If this principle is true clinically, then patients with large gaps between torn ligament ends (caused by displacement, folding, or retraction) may function well at lower loads, but they may be chronically at greater risk of reinjury at high loads.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Loitz-Ramage BJ,Frank CB,Shrive NGdoi
10.1097/00003086-199704000-00031subject
Has Abstractpub_date
1997-04-01 00:00:00pages
272-80issue
337eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:The etiology of aseptic loosening of prosthetic joint replacement components is unclear. Implant materials have been considered biologically inert, but recently studies indicate that inflammatory reactions directed against the implanted materials may contribute to aseptic loosening. Data suggesting a progression from ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199605000-00008
更新日期：1996-05-01 00:00:00
abstract：:To evaluate magnetic resonance imaging (MRI) of meniscal, ligamentous, and bony abnormalities in patients without clinical symptoms, scans were performed on 74 asymptomatic volunteers without histories or symptoms of knee injury. Before review by three radiologists in an independent and blinded fashion, the scans were...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-09-01 00:00:00
abstract：UNLABELLED:Compressive osseointegration technology, which provides immediate, mechanically compliant endoprosthetic fixation, has been adapted for massive proximal tibial reconstructions in an attempt to avoid aseptic failure encountered with conventional stems. A retrospective review of 16 patients with resected tumor...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-0986-4
更新日期：2009-11-01 00:00:00
abstract：:For determination of the optimal position in examining the ankle joint for anterior drawer sign and talar tilting, 12 legs freshly amputated above the knee were radiographically examined after successive transection of the lateral ankle ligaments in three different sequences. Apparatuses secured the position of the an...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:The effects of postoperative epidural infusions using local anesthetic and narcotic were assessed in reference to lower extremity blood flow. Nineteen patients who underwent unilateral total hip arthroplasty were randomly assigned to receive a postoperative epidural infusion of either 5 microg/ml fentanyl or 5 microg/...
journal_title：Clinical orthopaedics and related research
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1997-01-01 00:00:00
abstract：:An in vitro study was performed using a singular unibody design CoCr tibial baseplate with fins to test the hypothesis that the addition of cement surrounding the tibial stem decreases micromotion of the tibial tray in cemented total knee arthroplasty. Five configurations were tested. Significant micromotion occurred ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199811000-00012
更新日期：1998-11-01 00:00:00
abstract：:Supracondylar osteotomy is an alternative to other procedures for realignment of the rheumatoid hindfoot. Of 64 hindfoot operations performed since 1964, 12 were supracondylar osteotomies. The specific indication for this procedure was an ankylosed rheumatoid foot with equinovarus deformity and limited range of tarsal...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-07-01 00:00:00
abstract：:Fifteen patients with spondylolysis have received compression screw and bone graft treatment for repair of this defect. In all but one case, solid fusion of the pars defect was achieved within six months after surgery. After one year, 13 of the 15 patients were able to participate fully in sports activities. ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1989-09-01 00:00:00
abstract：:Although recent in vivo studies indicate that basic fibroblast growth factor hastens the healing and strength of the medical collateral ligament after injury, in vitro studies with epidermal growth factor and basic fibroblast growth factor have shown increased fibroblast proliferation with the exogenous administration...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:The extraosseous blood supply to the femoral head was studied by microdissection of latex-injected vessels in 19 neonatal hips. The fetuses were of black African descent. Although the general pattern was similar to that described by previous investigators, in seven of the specimens the largest contribution to the bloo...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-04-01 00:00:00
abstract：:Intraoperative femoral fracture is a well-recognized technical complication of cementless total hip arthroplasty. This study was designed to establish an in vitro model for initiation and propagation of fractures of the proximal femur in cementless THA and to assess the effect of fracture fixation in the form of cercl...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1991-11-01 00:00:00
abstract：:Stress fracture of the hip is a rare complication of total knee arthroplasty (TKA). Only eight cases seem to have been reported in the literature. A ninth case is reported in the present study. A 76-year-old obese woman was treated by right TKA for osteoarthrosis with cementing of the tibial component because of insuf...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-08-01 00:00:00
abstract：UNLABELLED:As the number of unicompartmental knee arthroplasties performed continues to rise, so too will the number of failures. In order to justify its continued use, conversion to total knee arthroplasty must be evaluated. From 1993-2004, 22 consecutive knees from 18 patients with a failed unicondylar knee arthropla...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000214431.19033.fa
更新日期：2006-05-01 00:00:00
abstract：:Both primary repair and late substitution of anterior cruciate ligaments can be accomplished by intra-articular methods. This principle is to provide temporary struts that are initially avascular but can later undergo revascularization and metaplasia to form a new ligament. The graft does afford initial support, howev...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-09-01 00:00:00
abstract：BACKGROUND:Hybrid revision knee component fixation, in which cement is placed in the metaphysis combined with a cementless diaphyseal engaging stem, provides ease of insertion, possibly improved component alignment, and easier removal if required, compared with fully cemented prostheses. The literature suggests the tec...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-010-1569-0
更新日期：2011-03-01 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：:An all-polyethylene cementless tibial component was used in 221 total knee arthroplasties. With one exception, failures did not occur before three years. Failure was characterized by medial subsidence of the tibial component. There was abrasion of the polyethylene on the undersurface of all components that failed. Sur...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-11-01 00:00:00
abstract：:Operative treatment of inadequately or imperfectly treated fractures of the distal radius can improve wrist and hand function substantially, but rarely restores the limb to normal. Patients with malunion of the distal radius present either with poor radiographic alignment before complete healing of the fracture (nasce...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/01.blo.0000152442.66083.ff
更新日期：2005-02-01 00:00:00
abstract：:Vascular injury is one of the drastic complications that can arise from internal fixation of acetabular fractures. A 29-year-old, obese man sustained multiple trauma, including a displaced transverse acetabular fracture. Extreme obesity made adequate exposure to the posterior acetabular area difficult, causing placeme...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1987-04-01 00:00:00
abstract：:A consecutive series of 125 hybrid total hip arthroplasties were performed in 120 patients by a single surgeon and were observed for an average of 8.6 years (range, 7-11 years). There were 38 men and 82 women with an average age of 71 years (range, 25-87 years) at the time of surgery. The diagnoses included primary an...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1996-12-01 00:00:00
abstract：BACKGROUND:Proximal femoral fractures are common in the elderly. The best care depends on expeditious presentation, medical stabilization, and treatment of the condition. QUESTIONS/PURPOSES:We investigated the risk of increased mortality in residents of rural communities secondary to inaccessible facilities and treatm...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2140-3
更新日期：2012-06-01 00:00:00
abstract：:Despite the high level of survivorship of cemented and uncemented stemmed components, there is a need for a joint prosthesis that does not invade the femoral canal. This type of prosthesis would be useful in treating younger and more active patients, in whom the use of such a design would usefully prolong the time bef...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200512000-00047
更新日期：2005-12-01 00:00:00
abstract：BACKGROUND:Small recent case series using CT-based navigation suggest such approaches may aid in surgical planning and improve accuracy of intended resections, but the accuracy and clinical use have not been confirmed. QUESTIONS/PURPOSES:We therefore evaluated (1) the accuracy; (2) recurrences; and (3) function in pat...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2557-3
更新日期：2013-03-01 00:00:00
abstract：:Between 1974 and 1989, 315 primary total hip replacements (274 patients) were done using the cemented Weber Rotation prosthesis and standardized operative technique, which was modified for the stem in 1978. After the first postoperative year, all patients had routine clinical and radiologic examinations at 2-year inte...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：2004-02-01 00:00:00
abstract：:Anterior approaches to the ulna were studied on 22 cadaveric forearms as alternative approaches to the ulnar shaft. An anterior approach is indicated when there is extensive posterior scar tissue, or extensive soft tissue loss in the posterior forearm as in some fresh fractures, or when a tumor is resected from the an...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1995-09-01 00:00:00
abstract：BACKGROUND:Modern hip implants typically feature modular heads, which allow for easy exchange and removal from the femoral stem at the time of revision. However, owing to fretting, corrosion, or cold welding, the modular head may be difficult or impossible to separate from the underlying trunnion, especially if the imp...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,多中心研究
doi：10.1007/s11999-016-4774-7
更新日期：2016-09-01 00:00:00
abstract：:Do X-rays adequately reflect the strength of callus post fracture? Eleven rabbit tibiae were manually fractured and allowed to heal in plaster. At varying times post fracture, the rabbits were sacrificed and the tibiae were removed. AP and lateral X-rays of each tibia were obtained and shown to 27 orthopedists and rad...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-07-01 00:00:00
abstract：BACKGROUND:So-called "hazardous attitudes" (macho, impulsive, antiauthority, resignation, invulnerable, and confident) were identified by the Federal Aviation Administration and the Canadian Air Transport Administration as contributing to road traffic incidents among college-aged drivers and felt to be useful for the p...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-014-3966-2
更新日期：2015-05-01 00:00:00
abstract：:A 7- to 9-month protocol of prophylactic transfusion was used to treat 33 joints in 19 children with severe hemophilia (< 1 U/dL Factors VIII or IX) and hypertrophic synovitis. The overall rate of hemarthrosis was reduced, but only 36% (12 of 33 joints) achieved a good result (defined as 0-0.5 bleeding episodes per mo...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-10-01 00:00:00
abstract：:Various guidelines have been proposed regarding which portions of a surgical gown may be considered sterile. Unfortunately, the validity of these recommendations has not been definitively established. We therefore evaluated gown sterility after major spinal surgery to assess the legitimacy of these guidelines. We used...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0341-1
更新日期：2009-03-01 00:00:00
