نتایج جستجو برای: flattened femoral head

تعداد نتایج: 207036  

Journal: :Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine 2006
C Hardaker D Dowson G H Isaac

The possibility of replacing the femoral head alone, in either solid or articular surface replacement form, during revision operations on metal-on-metal total hip replacements remains an attractive feature of such implants. In the present investigation, laboratory simulator studies of the influence upon volumetric wear of inserting a new femoral head, of introducing some head rotation, and of d...

Journal: :The Journal of arthroplasty 2014
James W Pritchett

This study assessed the results of 90 one-component revisions for failed hip resurfacing due to adverse reaction to metal wear debris (76 acetabular, 14 femoral). Patients with a femoral head size 40-45 mm (n=33) received a two-piece titanium meshed shell with a cross-linked polyethylene liner and patients with femoral head size 46-54 mm (n=43) received metal-on-metal components. Patients with ...

Traumatic anterior dislocation of the hip is an extremely rare condition in children and open dislocation is even rarer. Thisisusually caused by high-energy trauma. In the current study, we present a case of an eight-year-old child suffering froman open anterior–inferior dislocation of the right hip concomitant with pelvic ring disruption and an ipsilateral open distalfemoral fracture (Salter-H...

2014
Trevor C Gascoyne Martin J Petrak Thomas R Turgeon Eric R Bohm

BACKGROUND AND PURPOSE We previously reported on a randomized controlled trial (RCT) that examined the effect of adding tobramycin to bone cement after femoral stem migration. The present study examined femoral head penetration into both conventional and highly crosslinked polyethylene acetabular liners in the same group of RCT patients, with a minimum of 5 years of postoperative follow-up. P...

2006

RESURFACING HIP ARTHROPLASTY +*Hananouchi, T; *Sugano, N; *Nishii, T; *Sakai, T; **Miki, H;**Lee, SB; **Ohzono, K; *Yoshikawa, H +*Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine [email protected] Introduction: Metal on metal resurfacing hip arthroplasty (RHA) has been getting popularity due to its concept of bone conservation, stability, and expected longevi...

2015
Mario Giorgi Alessandra Carriero Sandra J. Shefelbine Niamh C. Nowlan

Joint morphogenesis is an important phase of prenatal joint development during which the opposing cartilaginous rudiments acquire their reciprocal and interlocking shapes. At an early stage of development, the prenatal hip joint is formed of a deep acetabular cavity that almost totally encloses the head. By the time of birth, the acetabulum has become shallower and the femoral head has lost sub...

2013
Paul J Jenkins Rishikesan Ramaesh Pankaj Pankaj James T Patton Colin R Howie Jérôme M Goffin Andrew van der Merwe Robert J Wallace Daniel E Porter A Hamish Simpson

BACKGROUND AND PURPOSE The micro-architecture of bone has been increasingly recognized as an important determinant of bone strength. Successful operative stabilization of fractures depends on bone strength. We evaluated the osseous micro-architecture and strength of the osteoporotic human femoral head. MATERIAL AND METHODS 6 femoral heads, obtained during arthroplasty surgery for femoral neck...

2016
Tetsuya Kimura Tomohiro Goto Daisuke Hamada Takahiko Tsutsui Keizo Wada Shoji Fukuta Akihiro Nagamachi Koichi Sairyo

We present a case of a 53-year-old woman with subchondral insufficiency fracture (SIF) of the femoral head without history of severe osteoporosis or overexertion. Plain radiographs showed acetabular overcoverage with excessive lateralization of the acetabular rim. A diagnosis of SIF was made by typical MRI findings of SIF. The lesion occurred at the antipodes of the extended rim. Increased mech...

2016

Osteonecrosis of the femoral head occurs predominantly in younger patients, and without treatment most of them suffer from collapse of the femoral head and painful arthritis of the hip joint within several years. The ideal goal of early treatment is to delay or arrest the progression of the disease before articular collapse occurs. It has been well documented that without specific treatment app...

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