OBJECTIVE To evaluate the effectiveness of lower energy flux density (EFD) extracorporeal shock wave therapy (ESWT) in the early stage of avascular necrosis (AVN) of the femoral head. METHODS Nineteen patients and 30 hips were enrolled. All subjects received 4 weekly sessions of ESWT, at different energy levels; group A (n=15; 1,000 shocks/session, EFD per shock 0.12 mJ/mm2) and group B (n=15...

The most important factors for long-term survival of cementless prostheses are the initial fixation, the osteoconducting properties of the metal shell and the bony response. Porous tantalum, a new biomaterial with a geometric structure similar to trabecular bone, was reported in animal studies to allow for bone ingrowth even when 3-mm gaps exist between the implant and the bone. This new materi...

OBJECTIVE To educate the obstetrics community regarding postpartum labral tears, an avoidable and treatable potential complication of pregnancy in the postpartum period. METHODS From 2009 to 2011, 10 women presented to the second author's office with persistent hip pain that had begun during pregnancy or during delivery. These 10 postpartum women presented with signs and symptoms of labral te...

OBJECTIVES To introduce the practice of a nurse-led orthopaedic clinic for managing stable patients after total hip or knee replacement and to evaluate its efficacy. DESIGN Case series. SETTING A public hospital in Hong Kong. PATIENTS Patients who had stable primary total knee replacement or total hip replacement done for longer than 2 years were managed in a nurse-led total joint replace...

This study reported the outcomes of patients treated with the Birmingham Hip Resurfacing System (Smith & Nephew, Memphis, Tennessee) to identify the prevalence of complications and failures. A retrospective review of 202 patients (206 hips) was performed. Outcomes were assessed clinically with Harris Hip Score at 6 and 12 months and then yearly. Subanalysis was performed, with the hips divided ...

PURPOSE To report early results of conservative treatments (including modifications in activities of daily living) for mild femoroacetabular impingement. METHODS 27 male and 10 female athletic patients aged 23 to 47 years presented with unilateral hip pain secondary to femoroacetabular impingement and an alpha angle of <60 degrees. Patients were instructed to adapt to their safe range of move...

OBJECTIVE To review the clinical performance of the anatomic medullary locking (AML) femoral stem in total hip arthroplasty. DESIGN A clinical and radiographic review. SETTING A tertiary lower limb joint replacement centre. PATIENTS Two hundred and twenty-one patients with noninflammatory gonarthrosis. INTERVENTIONS Two hundred and twenty-seven primary total hip arthroplasties with the ...

BACKGROUND Previous studies have provided the initial evidence for construct validity and test-retest reliability of the Mayo Hip Score. Instruments used for Total Hip Arthroplasty (THA) outcomes assessment should be valid, reliable and responsive to change. Our main objective was to examine the responsiveness to change, association with subsequent revision and the construct validity of the May...

introduction for decades, acetabular fractures were treated conservatively. judet et al. in 1960s established the operative treatment of these fractures by continuous improvement of pre-operative evaluation and classification of fractures. several studies demonstrated that accurate fracture reduction decreases the incidence of post-traumatic arthritis and improves functional outcome. conclusion...

background: the prevalence of hip dysplasia is 1 in 1000. several pelvic osteotomy methods have been developed to prevent early osteoarthritis, such as triple osteotomy. in this study we are going to introduce our new technique that was done on 4 patients with favorable short-term results.   methods: four patients underwent triple osteotomy and fixation using a reconstruction plate and early we...