Erik WalderURI Department of Electrical, Computer, and Biomedical EngineeringBME 181

A ring of fibrocartilage

Attached to the acetabulum

Is an extension of the hip socket

Force Distribution On Hip JointForce 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

Acetabulum

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

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

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

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

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

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

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

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

Arthroscope Arthroscope Traction TableTraction 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)

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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