1. Erik Walder URI Department of Electrical, Computer, and Biomedical Engineering BME 181

2.  A ring of fibrocartilage  Attached to the acetabulum  Is an extension of the hip socket

3. Force Distribution On Hip Joint  Helps to distribute the load the hip joint bears  Deepens the hip joint  Provides increased stability to the hip joint  Decreases friction within the hip joint Acetabulu m

4.  usually torn when the hip is bearing a load and is twisted suddenly  Trauma to the hip can also cause a tear  Some things can cause the labrum to tear more easily

5.  Hip dysplasia  Places more stress on the labrum  More movement in the femoral head makes a tear more likely  hip degeneration  Weakened or arthritic hips make tears more likely

6.  Pain is not usually felt directly in hip joint  Can feel like a strained groin, quadriceps, or back muscle  a catching or clicking sensation in the hip  Hips suddenly ‘giving way’  Pain is caused by torn pieces being caught in the hip joint

7.  A labrum tear usually has little to no impact on the range of motion  Computer Tomography (CT), Magnetic Resonance Imaging (MRI), and X-Rays will NOT detect a tear  A Magnetic Resonance Arthrogaphy (MRa) in addition to a physical examination is effective  Still cannot be 100% diagnosed until in surgery

8.  Contrast is injected into the actual labrum  This procedure (Arthrogram) takes anywhere from 15-45 minutes  The Patient then undergoes an MRI  Contrast leaks from the tears, making them visible

9.  Labrum is not actually repaired  No blood vessels = No Growth / Regeneration  Surgeons clean any loose tissues out of the joint  Torn areas are then removed  The labrum is then ‘sculpted’ until it has a smooth surface and edge again  Removing torn tissue means less pain

10.  Less cartilage means more stress on acetabulum and femoral head  Arthritis develops earlier  Caused by more friction in the joint  Full hip replacement at an earlier age  Benefits far outweigh the drawbacks

11.  Three incisions about one centimeter in diameter are made around the hip region  Tubes are inserted into each of the incisions to make transferring tools between incisions easier  A fiber optic camera allows the surgeon to see inside the joint  Specialized cutting and suction tools are used  Minimally Invasive

12. Arthroscope Traction Table  Arthroscope  Fiber optic Camera, Cutting tools, Suction Tools  Traction Table  Pulls Hip slightly out of Joint  Live X-Ray  Help Surgeons see that they are in the right area Arthroscope C-Arm X-Ray (Live X-Ray)

13.  Large Muscle Groups are not severed  Much Shorter recovery time (1-2 Months)  Partial Weight Bearing possible earlier than conventional surgery  Small Incisions mean less risk of infection  Much easier and shorter recovery than conventional open hip surgery

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