Background

Treatment of inflammatory and neoplastic diseases of maxillary sinus requires appropriate surgical exposure. Despite the use of multi-angulated endoscopes and curved instruments, there are some areas which still cannot be handled or viewed. So, further approaches other than the standard technique are needed to improve visualization and access to make possible disease control.

Aim

To compare the outcomes of middle meatal antrostomy approach (group A), endoscopic prelacrimal recess approach (group B) and canine fossa approach (group C). 

Patients and methods

Sixty patients with maxillary sinus lesions justifying surgery were included in this study. Patients were classified into 3 groups A, B and C, each one included 20 patients and were subjected to middle meatal antrostomy approach, endoscopic prelacrimal recess approach, and canine fossa approach respectively. Comparison between groups was done regarding the ability of each approach to access, visualize and reach different recesses and walls of the maxillary sinus, postoperative or intraoperative complications and postoperative recurrence.

Results

There was no significant difference found between group B and C regarding complete accessibility to different recesses and walls of the maxillary sinus. Only three (15%) patients from those who underwent middle meatal antrostomy approach had radiological and endoscopic recurrence, on the other hand none of those who underwent other approaches developed recurrence. Complications occurred in our study were quite few and not dangerous.

Conclusion

Prelacrimal recess approach and canine fossa approach are useful methods for diverse maxillary sinus lesions with excellent accessibility to all walls and recesses without lacrimal duct or inferior turbinate injury and less recurrence.

Keywords :

• Maxillary sinus, endoscopic approaches, middle meatal antrostomy approach, prelacrimal recess approach, canine fossa approach.

Osteoarthritis (OA) is a condition that manifests as cartilage deterioration and subchondral bone sclerosis in the joint tissues. The weight-bearing joint is most severely impacted by OA. According to some research, consuming foods high in copper albumin complex (cu-albumin complex) can help with OA-related joint degeneration and pain relief. The current study's objective to determine how oral administration of the cu-albumin complex as an anti-inflammatory medication affected the development of rat knee osteoarthritis (KOA). Fifty adult albino rats were divided into three groups: negative control untreated (n= 10, no KOA induction); positive untreated control (n= 20, KOA induction); and treated group (n= 20, KOA induction with administration of cu-albumin complex). According to the severity of the clinical symptoms, treated and untreated arthritic groups were equally divided into mild and severe groups (n=10). Monosodium iodoacetate (MIA) was used as intra-articular injection for osteoarthritis induction. Rats were euthanized after a month of the beginning of the experiment, and the joints were examined histopathologically and immunohistochemically. It was indicated that the treatment was effective in reducing KOA severity and in improvement of chondroitin sulfate of the affected cartilages. In conclusion, the structure of the chondroitin sulphate in the knee joint cartilages of KOA-affected rats was modified by the cu-albumin complex