Long-term survivorship and results in lower limb arthroplasty: a registry-based comparison study.

Introduction: Popularity of joint replacement surgery due to ever aging population surges the demand for a proper national joint registry. Our Chinese University of Hong Kong - Prince of Wales Hospital (CUHK-PWH) joint registry has passed the 30 year. The aims of this study are 1) summarize our territory-wide joint registry which has passed the 30th year since establishment and 2) compare our statistics with other major joint registries.

The long-term results of total knee arthroplasty in octogenarian.

With increasing life expectancy and ageing population, more octogenarians would benefit from total knee arthroplasty (TKA). The aim of this study is to evaluate the survivorship of TKA in octogenarian and their long-term outcomes. This was a retrospective review of 67 patients aged above 80 years who had primary TKA performed between 2005 and 2013 at a single centre.

Long-Term Outcome on the Mal-Seating of Ceramic-on-Ceramic Articulation in Total Hip Arthroplasty.

Background: Total hip arthroplasty with ceramic-on-ceramic articulation aims to decrease wear, osteolysis, and aseptic loosening. A metal-backed ceramic liner was developed to reduce the risk of liner fracture. However, a significant number of cases of mal-seating of the metal-backed ceramic liner were observed in the 2000s, and there were concerns about their outcome.

Satisfactory long-term survival, functional and radiological outcomes of open-wedge high tibial osteotomy for managing knee osteoarthritis: Minimum 10-year follow-up study.

Background: This prospective cohort study was designed to evaluate the survivorship and functional outcomes associated with long-term results of medial open-wedge high tibial osteotomy (MOWHTO) for the treatment of medial compartment knee osteoarthritis in the Chinese population. Although MOWHTO is a well-established procedure in the management of medial osteoarthritis of the knee, the long-term outcome in the Chinese population has not been reported in current literature. We hypothesised that MOWHTO would result in long-term preservation of knee function in Chinese, similar to that reported in the Caucasian population.

Prospective randomized trial comparing efficacy and safety of intravenous and intra-articular tranexamic acid in total knee arthroplasty.

Background: Total knee arthroplasty (TKA) is associated with significant perioperative blood loss and postoperative allogenic blood transfusion. Tranexamic acid (TXA) reversibly blocks lysine binding sites on plasminogen molecules and inhibits plasmin formation. Comparisons of the efficacy and safety of intra-articular and intravenous TXA in primary TKA have not previously been reported.

Progression of health-related quality of life of patients waiting for total knee arthroplasty.

Background: Total knee arthroplasty (TKA) remains the surgical gold standard treatment for patients suffering from end-stage osteoarthritis (OA) of the knee. However, due to the high demand and scarce medical resources, the waiting time for surgery is astoundingly lengthy. Controversies are shown in numerous studies, on whether physical functionality and mental status decline or remain stable over the waiting period.

Synoviocytes-derived Interleukin 35 Potentiates B Cell Response in Patients with Osteoarthritis and Rheumatoid Arthritis.

Objective: Elevated expression of interleukin 35 (IL-35) is associated with autoimmune disease, including rheumatoid arthritis (RA). The present study was undertaken to determine the functional interaction among IL-35, B cells, and stromal cells residing in the synovium of patients with RA and osteoarthritis (OA).

Methods: IL-35 (EBI-3/p35) expression was investigated in RA and OA synovium using quantitative real-time PCR (qRT-PCR) and immunohistochemistry.

Sixteen years' result of posterior-stabilized TKA.

Total knee arthroplasty (TKA) had been reported to have excellent result; however, most of the publications reported either mixed cruciate retaining and posterior-stabilized prostheses or mixed patient groups of rheumatoid arthritis and primary osteoarthritis. The long-term result of posterior-stabilized TKA in primary osteoarthritis has rarely reported. From 1994 to 2001, the survival of 179 posterior-stabilized TKAs (Insall-Burstein II, Zimmer, Warsaw, IN) in 146 patients with primary osteoarthritis was studied.

Mycobacterium chelonae infection after total knee arthroplasty: a case report.

We present a case of Mycobacterium chelonae infection after total knee arthroplasty in a 70-year-old woman. The patient underwent implant removal, drainage, debridement, and insertion of a gentamycin-load cement spacer. After 4 months, the second-stage surgery was performed.

Exeter small femoral stem for patients with small femurs.

Purpose: To report the long-term results of total hip arthroplasty (THA) using small size Exeter femoral stems.

Methods: Eight men and 34 women aged 60 to 83 (mean, 70) years underwent 45 THAs using the Exeter small stem with offsets of 30 mm (n=3), 33 mm (n=15), and 35.5 mm (n=27).

Osteoradionecrosis of the acetabulum in a total hip arthroplasty: a case report.

Osteoradionecrosis is a rare complication of radiation therapy. The pelvic and facial bones are those most likely to be affected when radiotherapy is used to manage gynaecological or nasopharyngeal malignancies. We report a 78-year-old woman with osteoradionecrosis of the acetabulum in a total hip arthroplasty 4 years after radiotherapy for a carcinoma of the vagina.

Ceramic insert dislodgment after revision ceramic-on-ceramic total hip arthroplasty.

We present a case of early ceramic insert dislodgment in a young patient with revision uncemented ceramic-on-ceramic total hip arthroplasty. The presentation may be subtle and the dislodgment may go unnoticed. This incidence draws our attention to the need for careful intraoperative confirmation of the insert position and frequent serial radiographic monitoring.

Computer assisted pelvic tumor resection and reconstruction with a custom-made prosthesis using an innovative adaptation and its validation.

Computer aided musculoskeletal tumor surgery is a novel concept. Ideally, computer navigation enables the integration of preoperative information concerning tumor extent and regional anatomy to facilitate execution of a surgical resection. Accurate resection helps oncological clearance and facilitates precise fitting of a custom prosthesis.

Early failure of smooth hydroxyapatite-coated press-fit acetabular cup--7 years of follow-up.

The early results of smooth hydroxyapatite-coated press-fit acetabular cup are comparable to porous-coated press-fit cup, but these results deteriorate dramatically after 5 years. In this study, 66 primary total hip arthroplasties performed between 1994 and 1998 were reviewed. The average follow-up was 6.

Steroid-induced avascular necrosis of the hip in neurosurgical patients: epidemiological study.

Background: Avascular necrosis (AVN) of the femoral head is perceived to be a rare complication of short-term steroid therapy for neurosurgical conditions but its precise risk is unknown.

Methods: Retrospective review of hospital records between 1994 and 2001.

Results: The risk of developing AVN of the femoral head is 0.

Primary exeter total hip arthroplasty in patients with small femurs: a minimal of 10 years follow-up.

One hundred and twelve hips in 101 Chinese patients received primary cemented Exeter total hip arthroplasty (Howmedica, Hong Kong). The implant had a collarless, double-tapered and polished stem. Seventy-five hips in 67 patients were available for assessment.

Osteonecrosis of hip and knee in patients with severe acute respiratory syndrome treated with steroids.

Purpose: To evaluate whether there is a relationship between steroid treatment and risk for osteonecrosis of the hip and knee in patients with severe acute respiratory syndrome (SARS).

Materials And Methods: The hospital ethics committee approved the study, and all patients provided written informed consent. A total of 254 patients with confirmed SARS treated with steroids underwent evaluation with magnetic resonance (MR) imaging for osteonecrosis.