UNLABELLED Although uncemented cup implants frequently are used in young patients, we believe long-term survival rates of cups in these patients are somewhat disappointing, and therefore we have continued to use cemented cups in primary THA, even in young patients. However, in cases of acetabular bone stock defects, we also use bone impaction grafting. We prospectively followed 130 patients wit...

BACKGROUND AND PURPOSE Femoral impaction grafting requires vigorous impaction to obtain adequate stability without risk of fracture, but the force of impaction has not been determined. We determined this threshold force in a preliminary study using animal femurs. METHODS Adult sow femurs were used because of their morphological similarity to human femurs in revision hip arthroplasty. 35 sow f...

Sir,—The article by Dr. Thomas on the above topic (Brit. J. Anaesth. (1964), 36, 314) prompts me to describe an interesting case I had some time ago. A male patient in his fifties was anaesthetized with thiopentone and paralyzed with suxamethonium. Laryngoscopy was performed using a Macintosh laryngoscope and a large broad epiglottis was visualized. When slight pressure was transmitted to the v...

Ileal impactions have previously been described as a common cause of colic, seen most notably in the southeastern United States. The impaction occurs within the ileum at the level of the ileocecal orifice and may extend up to 90 cm in an oral direction. Ileal impactions have been reported as the most frequent cause of non-strangulating small intestinal obstructions and account for 6.5–7.4% of a...

Although basket impaction rarely occurs during retrieval of common bile duct stones, it is a potentially serious event [1]. The Trapezoid RX wire-guided retrieval basket (Boston Scientific Corp., Marlborough, Massachusetts, USA) has an emergency release feature, whereby the tip is designed to disengage, thereby facilitating basket removal and reducing the risk of impaction [2]. However, we enco...

Retrospective review of 730 consecutive primary uncemented and cemented total hip arthroplasties revealed 19 intra-operative hoop-stress fractures of the femoral neck. These were incomplete, linear, and minimally displaced. Management was by cerclage wiring (12), bone graft and cerclage (two), further impaction (two), and the use of cement (three), with no change from our standard postoperative...

Background Impacted teeth are those that have erupted or are partially erupted and will not assume a normal arch relationship with opposing and adjacent teeth and tissues. Objective To evaluate the incidence and pattern of mandibular impacted third molars in patients of Dhulikhel Hospital. Method A retrospective study was conducted from March 2016 to November 2016 and reviewed 581 orthopantomog...

OBJECTIVE To determine the prevalence of impacted mandibular second molar (MM2) and the association between MM2 impaction and crowding. The clinical significance of the angle between first and second mandibular molar and of the space between the first mandibular molar (MM1) and the anterior margin of mandibular ramus in MM2 impaction were also evaluated. MATERIAL AND METHODS In this retrospec...

Tooth impaction rarely occurs in primary dentition. Most of the primary teeth impactions are seen in second molars. The purpose of this article is to present a 4-year-old girl with bilateral impaction of inverted primary maxillary central incisors which trauma had displaced their tooth germ before erupting.

PURPOSE To assess the stiffness of the cement bone composite and the depth and uniformity of cement penetration into the surface of the tibial component during total knee reconstruction in a porcine model. METHODS The effectiveness of 3 protocols were compared: 2 commonly used cementing techniques-finger-packing of cement on the cut surface followed by impaction, and coating of the undersurfa...