This patient had experienced so much repetitive hip impingement that they had worn a
groove (blue arrows) into the femur side of the hip joint. Ouch! This was successfully
smoothed away with a femoroplasty (bottom image)
Hip arthroscopy example
Before: cam deformity on the femur causing
painful hip impingement. The femoral head
should be spherical. The cam ‘bump’ (the bone
outside of the circle) pinches against hip labrum
and acetabulum (socket) which can cause pain,
labrum tears, and cartilage damage!
After: arthroscopic reshaping of the femur. There
is now a smooth spherical shape. This eliminates
hip impingement and minimizes the risk of re-
injury to the hip labrum.
Hip arthroscopy example
Before: cam deformity on the femur causing
painful hip impingement. The femoral head
should be spherical. The cam ‘bump’ (the bone
outside of the circle) pinches against hip labrum
and acetabulum (socket) which can cause pain,
labrum tears, and cartilage damage!
After: arthroscopic reshaping of the femur. There
is now a smooth spherical shape. This eliminates
hip impingement and minimizes the risk of hip re
-injury.
The most common cause of failed hip arthroscopy is inadequate removal of bone that causing hip
impingement. This is an example of a revision hip arthroscopy I performed to remove a cam bump
that was still present after a hip arthroscopy done elsewhere. The patient recovered well and had
relief of their hip pain.
Before: cam deformity on the femur causing
painful hip impingement. The femoral head
should be spherical. The cam ‘bump’ (the bone
outside of the circle) pinches against hip labrum
and acetabulum (socket) which can cause pain,
labrum tears, and cartilage damage!
After: arthroscopic reshaping of the femur. There
is now a smooth spherical shape. This eliminates
hip impingement and minimizes the risk of hip re
-injury.
Revision hip arthroscopy example
Case example: arthroscopic labrum tear
Before: acetabular labrum tear. This patient also
had hip dysplasia (shallow hip socket) which
causes development of a large, easily torn
labrum.
After: successful arthroscopic labrum repair. The
patient also underwent a periacetabular
osteotomy (PAO) with my practice partner Dr.
Todd McKinley to treat the hip dysplasia. The
patient recovered well and is back to her preferred
physical activities.
Revision hip arthroscopy with labrum re-repair. The patient’s cam bump on the
femur (ball) side of the hip joint had not been removed during the first hip
arthroscopy performed elsewhere. This this led to a recurrent labrum tear.
Re-torn labrum (white structure at top of image) Re-repaired labrum with sutures
Cam bump on the femur. I reshape the femur with
A special arthroscopic burr (metal object in imag)
Femur after cam bump removal. The good
femoroplasty (femur reshaping) should have a
gentle slope like this.
Femur (ball) side of the hip joint
after arthroscopic reshaping by me.
A well-done fermoroplasty should
have smooth, gentle slope like this
to mimic the normal spherical
shape of a femur that is not prone
to hip impingement.
Hip arthroscopy is a difficult surgery and it is easy for surgeons
without enough experience with this procedure to make
technical errors! This is an example of a poorly performed
femur reshaping (femoroplasty) from a hip arthroscopy done
elsewhere. Too much bone was removed right next to the
cartilage (note what looks like a ‘cliff’ on the right side), and
not enough bone was removed away from the cartilage (note
the bone that the metal instrument is touching on the left
side). I performed revision hip arthroscopy and reshaped the
femur surface to give it a gentler slope that is more like the
natural shape of a hip that is not prone to hip impingement
Too much bone
removed
Not enough
bone removed
Patients can also have hip impingement and labrum tears from too much bone along the rim of the
acetabulum (hip socket). This is called ‘pincer’ impingment. In this example there is a torn, irritated
labrum and too much bone long the rim. I first moved the labrum out of the way to avoid damaging it.
Then I removed the excess bone along the rim of the socket (acetabulum). This is called an
acetabuloplasty. Finally, I repaired the labrum tear with sutures.
Labrum tear I peeled the torn labrum off of the rim of the socket to
avoid damaging it further when removing the excess
bone from the rim of the socket.
I removed the excess bone from the rim of
the hip socket (acetabulum) . Now there is a
smooth surface at the rim (blue arrow)
I repaired the labrum back to the rim of the acetabulum
Example of an arthroscopic labrum repair
performed by me
In some rare cases, chronic labrum inflammation and injury can cause the tissue to
turn into bone. Part of this patient’s labrum had turned into bone. This can’t be
repaired. I had to remove the abnormal labrum tissue and preform a labrum
reconstruction. This involves removing the irreparable labrum and replacing it with
tendon tissue. When performed for the right reasons, recent clinical studies have
shown that labrum reconstruction patients can do as well as patients that were able
to have a regular labrum repair!
Labrum turned into bone
Healthy labrum
Labrum turned
into bone
Removal of the
part of the
labrum that had
turned into bone
Reconstructed
labrum with
tendon tissue
Hip arthroscopy is a difficult surgery. It is easy for surgeons without enough experience with this procedure to
make technical errors! This is an example of a poorly performed hip socket reshaping (acetabuloplasty) from a hip
arthroscopy done elsewhere. The acetabuloplasty had not been finished all the way around the rim, resulting in a
shelf of bone and continued impingement (pincer impingement). I performed revision hip arthroscopy and
reshaped the rim of the acetabulum to give it a smooth contour and remove any remaining cause of hip
impingement. The labrum tissue was badly damaged from the pincer impingement and required a labrum
reconstruction. This involves replacing the irreparably damaged labrum tissue with tendon tissue. When
performed for the right reasons, recent clinical studies have shown that labrum reconstruction patients can do as
well as patients that were able to have a regular labrum repair!
Healthy joint surface (cartilage)
Severely damaged
labrum with sutures
from previous labrum
repair done elsewhere
The rim of the acetabulum had
not been reshaped properly and
there was shelf of bone where
the previous acetabuloplasty had
stopped
I revised the
acetabuloplasty to
make a smooth rim and
remove any remaining
cause of impingement
I reconstructed the labrum
with tendon tissue to replace
the severely damaged labrum