Minimally Invasive Subvastus Approach: Improving the Results of Total Knee Arthroplasty: A Prospective, Randomized Trial
Minimally invasive knee arthroplasty seeks to diminish the problems of traditional extensile exposures aiming for more rapid rehabilitation of patients after surgery.
The thrust of meniscal surgery has now moved toward meniscal preservation. Repair is particularly indicated on the lateral side where the sequelae of resection are severe even in an older patient population.
Better muscular recovery of the extensor mechanism after TKA is claimed by femoral designs based on a sagittal single radius.
There is limited information regarding revision total knee arthroplasty (TKA) with respect to etiology, outcome, and long-term survival comparing different implant types.
Results after Late Polymicrobial, Gram-negative, and Methicillin-resistant Infections in Knee Arthroplasty
Previous studies of knee arthroplasty infections caused by high-virulence organisms suggest poor outcomes. Polymicrobial and Gram-negative infections are less studied.
Computer Assistance Increases Precision of Component Placement in Total Knee Arthroplasty with Articular Deformity
The accuracy of computer navigation applied to total knee arthroplasty (TKA) in knees with severe deformity has not been studied.
Postoperative pain control is a challenge in patients undergoing TKA due to side effects and technical limitations of current analgesic approaches. Local anesthetic infiltration through continuous infusion pumps has been shown to reduce postoperative pain in previous studies.
Rotating-hinge total knee prostheses may be used for the treatment of global instability about the knee. The designs of previous generations were associated with suboptimal outcomes.
Osteonecrosis is a complication of corticosteroid therapy with limited treatment options in young, active patients. These options include debridement, core decompression, osteotomy, allografting, and partial or total knee replacement. Few studies exist regarding the use of osteochondral allografts for treatment of steroid-associated osteonecrosis.
Porous tantalum is reportedly a good substitute for structural bone graft in several applications. So far, its use has not been reported in tibial tuberosity anteriorization (TTA) for treatment of isolated degenerative chondral lesions of the patellofemoral joint.
Weight of Polyethylene Wear Particles is Similar in TKAs with Oxidized Zirconium and Cobalt-chrome Prostheses
The greater lubricity and resistance to scratching of oxidized zirconium femoral components are expected to result in less polyethylene wear than cobalt-chrome femoral components.
Various head-preserving procedures have been used for young patients with osteonecrosis of the femoral head (ONFH) to avert the need for THA. However, none of these techniques are accepted universally because of the technical difficulties, complications, or mixed results that often are difficult to reproduce.
Many patients with degenerative joint disease of the hip have substantial degeneration of the lumbar spine. These patients may have back and lower extremity pain develop after THA and it may be difficult to determine whether the source of the pain is the hip or spine.
Subchondral Insufficiency Fracture of the Femoral Head may be Associated with Hip Dysplasia: A Pilot Study
Subchondral insufficiency fracture of the femoral head occurs mainly in elderly patients with osteoporosis. Spontaneous resolution is observed after nonoperative treatment in some patients whereas other show progressive joint destruction requiring THA. Several studies report the occurrence of subchondral insufficiency fracture of the femoral head in dysplastic hips.
Quadriceps muscle strength, which is essential for the function and stability of the knee, has been found to be impaired even years after arthroscopic partial meniscectomy. However, the neuromuscular alterations that could account for such muscle weakness remain unclear.
Optimal leg alignment is the goal of tibial osteotomy. The Taylor Spatial Frame (TSF) and the Ilizarov method enable gradual realignment of angulation and translation in the coronal, sagittal, and axial planes, therefore, the term six-axis correction.
We previously reported a limb-salvage technique by treating tumor-bearing bone with liquid nitrogen. We also reported systemic antitumor immunity was enhanced by cryotreatment in a murine osteosarcoma (LM8) model. We therefore combined the cryotreatment of tumor with dendritic cells to promote tumor-specific immune responses.
Resection of large tumors of the proximal tibia may be reconstructed with endoprostheses or allografts with fixation. Endoprosthetic replacement is associated with high failure rates and complications. Proximal tibia osteoarticular allografts after tumor resection allows restoration of bone stock and reconstruction of the extensor mechanism, but the long-term failure rates and complications are not known.
Successful treatment of an infected joint arthroplasty depends on correctly identifying the responsible pathogens. The value of a preoperative biopsy remains controversial.
Prior studies suggest the cost of allograft anterior cruciate ligament (ACL) reconstruction is less than that for autograft reconstruction. Charges in these studies were influenced by patients requiring inpatient hospitalization.
Cartilage Degeneration is Associated with Augmented Chemically-induced Joint Pain in Rats: A Pilot Study
Osteoarthritis arising from cartilage degeneration is the most common cause of joint pain. However, the relationship between joint pain and cartilage degeneration is not well understood.
Publication Rates of Presentations at an Annual Meeting of the American Academy of Orthopaedic Surgeons
The Program Committee of the American Academy of Orthopaedic Surgery (AAOS) continually tries to improve the quality of the scientific program at AAOS meetings. However, according to the most recent study, the publication rate of papers presented at the 1996 annual meeting was only 34%.