Subtrochanteric fractures of the femur results of treatment by interlocking nailing

Thirty-one subtrochanteric femoral fractures were treated with an interlocking nail. With a follow-up period of at least one year, there was 96.8% [30/31] union rate. The average time to healing was 25 weeks. There was one case with non-union. Essentially all non pathologic sub-trochanteric femoral fractures can be stabilized by interlocking nailing, regardless of the fracture pattern or degree of comminution. Favorable mechanical characteristics of interlocking nails have eliminated the requirement of surgically reconstructing the medial femoral cortex. Closed interlocking nailing is the preferred treatment for subtrochanteric fractures of the femur resulting from Trauma

Unicompartmental replacement arthroplasty of the knee assessment of the quality of the results

Since 1991 we have made a prospective study in El Demerdash, Ain Shams Specialized and King Fahd Hospital Madina Saudi-Arabia Hospitals using improved design of Robert Brigham unicondylar Knee Prosthesis. A total of 29 knees in 29 patients have been followed up for 2 to 5 years [mean 3 years]. Eighty nine percent of the knees were rated as having excellent or good results using Bristol Knee Score. 26 patients had lasting relief of pain. There was no subsidence or loosening of either tibial or femoral components and there was no instance of local osteolysis. One knee have been revised to bicompartmental replacement for deterioration of the other compartment two patients with a pre-operative diagnosis of post-traumatic degenerative artheritis have unexplained pain. The operation is recommended as a satisfactory and durable form of treatment for selected patients with Unicompartmental Osteoarthritis, Osteonecrosis, and post traumatic degenerative arthritis

Concentrations of-plasma atrial natriuretic peptide, renin, angiotensin II and aldosterone under different conditions of sodium intake in rats

It is known that atrial natriuretic peptide [ANP] plays a major role in the homeostasis of body fluids. There are evidence that ANP may link the heart, kidney, adrenal, blood vessels and brain in a complex system involved in the regulation of body fluids and electrolytes as well as blood pressure. The study was carried out on 90 male albino rats divided into 6 groups, each of 15 rats. The first group was kept for 15 days on normal diet [controls], the 2nd, 3rd groups were kept on different sodium intake, 50, 150 and 350 nmol/kg of diet respectively. The 5th group was injected daily with 0.01 micro l/kg body weight ANP and the last group was injected daily with 0.02 micro l/kg body weight cafedrine HC1, theodrenaline HC1 for 7 days. At the end of the experiments the animals were sacrificed, blood samples were obtained and plasma separated and kept frozen for analysis. The results show that plasma ANP, renin, aldosterone and angiotensin II were significantly decreased in the 3rd, and 4th groups while in the 2nd group there was no statistically significant change when compared with controls. After injection of cafedrine, HC1, theodrenaline HC1, plasma ANP was significantly decreased while plasma renin, aldosterone and angiotensin II were significantly increased. After injection of ANP, significant decrease in renin and aldosterone was observed but angiotensin II showed significant decrease. Plasma sodium and potassium concentrations were significantly increased in all cases compared to controls. The results were discussed according to current literatures