Introduction The utilization of hip arthrodesis for the treatment of end-stage hip degenerative joint disease has significantly declined due to the success of total hip arthroplasty. In 2010, the Centers for Disease Control (CDC) reported that over 332,000 THA procedures were performed in the United States alone. Although fewer patients are undergoing primary hip fusion, patients that have prev...

Our work tackles collective motion and decision-making in a primitive multicellular animal, Trichoplax adhaerens, enabling pioneering research into how intercellular coordination affects animal behavior and how migration accuracy scales with group size. Collective motion of cells is critical to some of the most vital tasks including wound healing, development, and immune response [Friedl and Gi...

INTRODUCTION The result of treatment of infections involving antibiotic-resistant organisms in total knee arthroplasty (TKA) is often poor. We evaluated the efficacy of 2-stage revision in TKAs infected with resistant organisms and compared the clinical outcomes with articulating and conventional static spacers, in terms of both infection control and function. METHODS In a prospective manner,...

BACKGROUND High tibial osteotomy (HTO) is a well-established treatment for unicompartmental gonarthrosis of the knee, but its durability and complications remain controversial. We previously introduced a novel dome-shaped HTO, and the long-term follow-up results using this technique are analyzed in this study. METHODS We treated 25 varus knees in 22 patients with medial gonarthrosis, using a ...

Gonarthrosis in the relatively young and active population causes major daily discomfort and disability. If the arthritic process is mainly limited to the medial compartment, the axis of a varus knee can be realigned laterally with high tibial osteotomy to unload the medial compartment and allow some cartilage regeneration and pain relief. This study describes the outcomes of patients who under...

BACKGROUND Several tendon graft and fixation methods have been introduced in medial patellofemoral ligament (MPFL) reconstruction for recurrent patellar dislocation. The purpose of this study was to evaluate the results of MPFL reconstruction using a gracilis autograft fixation without bone tunnel in patients with recurrent patellar instability. METHODS Nine patients (four males and five fema...

Osteotomy through the upper end of the tibia was originally used to correct valgus and varus deformities of the knee caused by rickets or poliomyelitis. In 1958 one of us reported the results of this operation in patients with osteoarthritis of the knee (Jackson 1958), and further papers were published in 1961 and 1969 (Jackson and Waugh 1961, 1969; Jackson, Waugh and Green 1969). In a series o...

BACKGROUND Recurrence of acute patellar dislocation affects approximately 30% of individuals, and up to 75% of those with grade IV instability. The medial patellofemoral ligament (MPFL) is considered to be critical for patellar stabilization. MPFL reconstruction with allografts has been proposed to reduce risk of recurrence, but there is limited evidence about the safety and effectiveness of te...

OBJECTIVE The methods most used for patellar height measurement were compared with the plateau-patella angle method. METHODS A cross-sectional study was conducted, in which lateral-view radiographs of the knee were evaluated using the three methods already established in the literature: Insall-Salvati (IS), Blackburne-Peel (BP) and Caton-Deschamps (CD). These were compared with the plateau-pa...