Effect of Rotational Speed of Drill Bit on Surface Defects with H&E Stain in Bone Drilling (An Animal Study)
Journal Title: Majallah-i jarrāḥī-i ustukhvān va mafāṣil-i Īrān - Year 2016, Vol 14, Issue 1
Abstract
Background: Drilling of bone is used to fix the fractures with screws, wires or plates. The interaction between hole surface surface and fracture stabilization components is effective in the bonding strength of the stabilization process. During bone drilling, the temperature could increase above 47 °C and cause irreversible thermal necrosis. The surface roughness can be considered as a sign of damage of the bone cells. Methods: This study looks at the effect of rotational speed of drilling of bone on production of surface defects to determine the best processing condition for minimizing the osteonecrosis and surface defects. Seven different rotational speeds in drilling beef femur were used-in non-cooling and liquid cooling phases. In all tests the temperature was measured. After cutting samples, using hematoxylin-eosin staining were stained for detection of surface defects. Results: The lowest heat prodution was with use of liquid cooling. The drill speed of 1500 rpm with liquid cooling showed the maximum temperature of 48.5°C without production of surface debris and defects as witnessed in stained bone segment. Conclusions: Cooling application in bone drilling process avoids over and thus less thermal necrosis, which gives the lowest number of surface defects and highest quality wall surface hole.
Authors and Affiliations
Ehsan Shakouri, Fatemeh Zareh, Ahmad Majd, Hossein Haghigh Hassanali
Prevalence and reason for removal of orthopaedic implants in one year
Background: Removal of implants used for fixation in orthopaedic cases is a fairly common procedure. There are varied views as to the need for removal of such implants on elective surgical schedules. There is no evidence...
Outcome of Acute Acromioclavicular Dislocation Surgery by Modified Weaver-Dunn Technique
Background: Weaver-Dunn technique is one of the common methods for treatment of acute acromioclavicular joint (ACJ) dislocation. Several modifications of this technique have been already described. Because of shortcoming...
Effects of allogenic and xenogenic cartilage graft on bone defect healing in rabbit model
Background: Orthopedic surgeons are trying to find best substitutes for bone defects in human. Bone is still the golden standard substitute where graft is needed. Effects of rabbit and bovine rib cartilages will evaluate...
Evaluation the effect of Pistacia atlantica hydro alcoholic extract with bone marrow- derived stem cells on induced knee osteoarthritis in rat
Background: Osteoarthritis is a progressive joint disease. Mastic fruit has antioxidant and anti-inflammatory properties. Bone marrow stem cells have the ability to differentiate into chondrocyte. The purpose of this stu...
Mesenchymal Stem Cells and Orthopaedics (A Current Concept)
Orthopaedics tissues, such as bone, cartilage, and tendon, involve cells that are difficult to culture and grow in vitro for reconstruction of damaged tissues. A small number of cells called stem cells have the ability t...