During a hip arthroscopy it was reported that while drilling a hole into rim of the acetabulum the surgeon drilled through a spike tip drill guide.When surgeon removed the drill bit he noticed that only half of the bit was removed and the other half was still in the hole.He did a search and found that the broken drill bit was protruding through the articular cartilage.The broken piece was removed with a grasper.The surgeon believed that after the bit broke, what was left of the shaft of the bit essentially changed its trajectory (no longer being engaged in the drill hole) and created a small rim fracture due to the proximity of the drilled hole to the acetabulum.He didn't blame the bit.However, the weakened metallurgy and the proximity of the drill hole to the articular surface made for a bad combo.It was noticed the bit was lacking of any legible markings.Customer thinks it had been processed a couple hundred times.They do about 250-300 labral repairs a year.Surgeon put an anchor in above the defect and secured the labrum.
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