Abstract：
BACKGROUND:The literature suggests survivorship of unicompartmental knee arthroplasties (UKAs) for spontaneous osteonecrosis of the knee ranges from 93% to 97% at 10 to 12 years. However, these data arise from small series (23 to 33 patients), jeopardizing meaningful conclusions. QUESTIONS/PURPOSES:We determined (1) the longer-term survivorship of UKAs in a larger group of patients with spontaneous osteonecrosis of the knee; (2) their subjective, symptomatic, and functional outcomes; and (3) the percentage of failures and reasons for failures to identify relevant indications, contraindications, and technical parameters for treatment with a modern implant design. METHODS:We retrospectively evaluated all 84 patients with late-stage spontaneous osteonecrosis of the knee who had a medial UKA from 1998 to 2005. All patients had preoperative MRI to confirm the diagnosis, exclude metaphyseal involvement, and confirm the absence of major degenerative changes in the lateral and patellofemoral compartments. The mean age of the patients at surgery was 66 years and mean BMI was 28.9. We conducted Kaplan-Meier survival analysis using revision for any reason as the end point. Minimum followup was 63 months (mean, 98 months; range, 63-145 months). RESULTS:Ten-year survivorship was 89%. Ten revisions were performed; the most common reasons were subsidence of the tibial component (four) and aseptic loosening of the tibial component (three). No patient underwent revision for progression of osteoarthritis in the lateral or patellofemoral compartments. CONCLUSIONS:Our data suggest spontaneous osteonecrosis of the knee may be an indication for UKA, provided secondary osteonecrosis of the knee is ruled out, preoperative MRI documents the absence of disease in other compartments, and there is no overcorrection in any plane. LEVEL OF EVIDENCE:Level IV, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Bruni D,Iacono F,Raspugli G,Zaffagnini S,Marcacci Mdoi
10.1007/s11999-012-2246-2subject
Has Abstractpub_date
2012-05-01 00:00:00pages
1442-51issue
5eissn
0009-921Xissn
1528-1132journal_volume
470pub_type
杂志文章abstract：:A retrospective epidemiological study was performed to determine whether postmenopausal osteoporosis is a hereditary condition. Frequency of fractures was calculated in women whose mothers had suffered vertebral fractures after a low-energy trauma three decades earlier. The frequency of fractures was compared to the f...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1989-03-01 00:00:00
abstract：:Patients who received a single corticosteroid injection for treatment of third webspace plantar interdigital neuroma were studied retrospectively. Forty-three patients (51 feet) were available for followup study (followup mean, 4 years; range, 2 to 6 years). Mean age of patients was 53 years. Pain initially was reliev...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199605000-00022
更新日期：1996-05-01 00:00:00
abstract：:Malignant tumors around fracture fixation implants have been reported sporadically for many years. Recently, however, reports of sarcomatous degeneration around a standard cemented hip arthroplasty and around cobalt-chromium-bearing hip arthroplasties raise new questions of the malignant potential of metallic ends pro...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1987-03-01 00:00:00
abstract：BACKGROUND:Soluble factors released from chondrocytes can both enhance and induce chondrocyte-like behavior in cocultured dedifferentiated cells. The ability to similarly prime and modulate biosynthetic activity of differentiated cells encapsulated in a three-dimensional environment is unknown. QUESTIONS/PURPOSES:To u...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-1772-7
更新日期：2011-10-01 00:00:00
abstract：BACKGROUND:Uncemented press-fit cups provide bone fixation in primary THA, but the use of screws is sometimes necessary to achieve primary stability of the socket. However, it is unclear whether and when screws should be used. QUESTION/PURPOSES:We analyzed the factors related to screw use with a press-fit uncemented c...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2381-9
更新日期：2012-11-01 00:00:00
abstract：:An 11-year-old boy sustained complete brachial artery disruption following closed posterior elbow dislocation. This is the first documentation in the English-language literature of this type of arterial transection following closed elbow dislocation in a child. It is also the first report of surgical repair of the bra...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-04-01 00:00:00
abstract：:Seven patients with chronic osteomyelitis were treated by surgical debridement. Cefamandole was administered intravenously before surgery. During the debridement, cefamandole concentrations were measured in serum and necrotic bone. Although adequate levels of antibiotic were achieved in the serum, minimal or no concen...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1985-10-01 00:00:00
abstract：:Dysplastic acetabula treated with cemented sockets have shown shortcomings due to loosening, bone erosion, and implant migration. A Bateman bipolar prosthesis was used, and the deficient superior acetabular lip was augmented with autologous femoral head graft. The surgical technique "locked" the bipolar cup in the rec...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-02-01 00:00:00
abstract：:Two cases of entrapment of suction drainage tubes between the femoral and tibial components were encountered after total knee arthroplasty. The first patient had an arthrotomy because it was believed that the tube was caught in a suture, and while attempting to remove it a portion remained trapped in the joint. At ope...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：:Glucocorticoid injection is widely used in tendon disorders. Despite previous studies on the histologic and biomechanical changes in tendons after glucocorticoid injections, the role of glucocorticoid in tendon rupture still is controversial. It was hypothesized that glucocorticoid has a direct deleterious effect on h...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000118184.83983.65
更新日期：2004-04-01 00:00:00
abstract：:In this study, the effect of clarithromycin on the destruction of bacterial biofilm in Pseudomonas aeruginosa osteomyelitis was investigated. Foreign body-related osteomyelitis caused by ceftazidime-sensitive Pseudomonas aeruginosa was produced in the tibias of 26 rats. After osteomyelitis was verified on Day 14, 10 r...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Ulnar coronoid process fractures are relatively uncommon injuries usually occurring with elbow dislocations and contributing to elbow instability. Recent evidence suggests coronoid tip fractures have a role in the instability. We sought to quantify the capsular and brachialis attachments of the ulnar coronoid process ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000218729.59838.bc
更新日期：2006-08-01 00:00:00
abstract：:The need for revision surgery following total elbow arthroplasty can be minimized if certain principles are observed. These include careful preoperative assessment for diaphyseal bone size, the presence of anatomic resources for arthroplasty, the possible need for future adjacent joint arthroplasties, meticulous surgi...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1982-10-01 00:00:00
abstract：:Rupture of the Achilles tendon is being reported more frequently. Results published in the literature in the past 25 years were reviewed to determine the overall outcome comparing surgical with nonsurgical treatment and to identify areas needing further study. The rerupture rate for surgically treated patients was 12/...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1986-06-01 00:00:00
abstract：:Transcutaneous electrical neurostimulation relieves chronic and acute pain by blocking the transmission of pain impulses with comfortable electrical stimulation of light touch sensation. The original Gate Control Theory of Melzack and Wall provides a working model to explain the significant pain relief afforded patien...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-10-01 00:00:00
abstract：:One hundred four patients with rheumatoid arthritis of the wrist were evaluated a minimum of 12 months post-operatively (average of 34 months). Seventy patients had 87 arthroplasties and 34 patients had 41 arthrodeses performed on the Arthritis Service of Rancho Los Amigos Hospital (Downey, California), from 1962 to 1...
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：:Thirty-two rabbits were used experimentally to study the effect of cortisone in bone, lungs, kidneys, and liver. Cortisone does induce abnormal increases in the serum cholesterol, fatty metamorphosis of the liver and the fatty emboli of the subchondral vessels of the femoral heads. Clofibrate therapy appeared to modif...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:A review of the existing data on shoulder laxity in females reveals there are insufficient data to confirm the commonly held belief that shoulders in females are more lax than shoulders in males. Laxity is not synonymous with instability. Although females may have increased generalized joint laxity relative to males, ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：2000-03-01 00:00:00
abstract：:Despite their increasing clinical use, mobile-bearing total knee replacements have not been well characterized biomechanically. An experimental and finite element analysis was done to assess the mobility and contact mechanics of a widely used rotating platform total knee replacement. Parameters that varied were axial ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200111000-00004
更新日期：2001-11-01 00:00:00
abstract：:In spite of the increasing numbers of porous coated total hip femoral components implanted each year, little is known about the shear strength or fatigue performance of the interface between coating and implant substrate. The appearance of loose beads in clinical follow-up roentgenograms suggests that shear failure of...
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：:Endoprosthetic proximal femur replacement is a well-accepted method for treatment of primary bone tumors; however the functional results of treatment are not well documented. To evaluate functional outcomes, we recorded the Toronto Extremity Salvage Score and Musculoskeletal Tumor Society 1987 and 1993 scores in 29 pa...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000136840.67864.78
更新日期：2004-09-01 00:00:00
abstract：:An improved method of closed irrigation-suction treatment of bone and joint infections is described. The method utilizes a crisscross flow-reversal system using a double tube which prevents obstruction of the tube. A series of 154 patients with acute and chronic bone and joint infections were treated with closed irrig...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1980-05-01 00:00:00
abstract：:Autogenous implantation of nucleus pulposus or nucleus pulposus cells that were activated by coculture retards intervertebral disc degeneration, but harvesting such grafts causes disc degeneration at the donor site. This study examined whether nucleus pulposus allografts similarly retard disc degeneration and whether ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200108000-00015
更新日期：2001-08-01 00:00:00
abstract：BACKGROUND:The incidence of heterotopic ossification (HO) after hip arthroscopy reportedly ranges from less than 1.0% to 6.3%. Although open debridement has been described and a few series mention arthroscopic debridement, the techniques for arthroscopic excision of HO have not been described in detail. We describe the...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2627-6
更新日期：2013-04-01 00:00:00
abstract：BACKGROUND:Although several types of culture medium have been used for preservation of osteochondral allografts, the viability of chondrocytes decreases with increasing storage duration. We previously showed the University of Wisconsin solution is more suitable for graft preservation than culture medium. QUESTIONS/PUR...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2182-6
更新日期：2012-10-01 00:00:00
abstract：:Osteointegration and implant position are regions of interest after cementless total knee replacement. The radiographic and functional status of 101 implants in 101 patients were evaluated 3, 12, and 24 months after implantation. To obtain satisfactory radiographs, a fluoroscopically assisted technique was used. In 92...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200303000-00026
更新日期：2003-03-01 00:00:00
abstract：:Specialty boards serve the function of defining qualifications and issuing credentials to assure the public of the specialist's preparation and skill. Over the past 72 years, 23 such boards have been approved and now issue 31 different types of general specialty certificates and 57 types of subspecialty credentials. F...
journal_title：Clinical orthopaedics and related research
pub_type： 历史文章,杂志文章
doi：
更新日期：1990-08-01 00:00:00
abstract：:This study investigated 11 patients with localized pigmented villonodular synovitis of the knee that was diagnosed and treated by arthroscopic technique. There were six male and five female patients between the ages of 15 and 59 years (mean, 34.6 years). Seven patients reported extension limitation without joint line ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200010000-00026
更新日期：2000-10-01 00:00:00
abstract：:The commonly used classification systems of hip dislocation are based on the direction of the dislocation and the presence of associated lesions. However, no rating system can reliably predict the patient's outcome and prognosis based on the initial presentation and classification. In general, patients with anterior d...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200008000-00004
更新日期：2000-08-01 00:00:00
abstract：:Axillary crutch palsy, although well described in the literature, is rarely seen in clinical practice. Little has been written in the contemporary orthopaedic literature. The purpose of this case report is to report on a well-documented axillary crutch palsy with bilateral, predominantly radial, nerve dysfunction that...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
