Original Article Understanding gamma ventral capsulotomy ...
HIP JOINT PRESERVATION - Ilizarov.orgabout 1.5 cm thick. Z shaped capsulotomy is done and labrum is...
Transcript of HIP JOINT PRESERVATION - Ilizarov.orgabout 1.5 cm thick. Z shaped capsulotomy is done and labrum is...
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We present our experience in the Safe Surgical Dislocation approach to the Hip Joint in
young adults for various conditions performed at our institute over last 5 years.
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Dr Aung KoKo, M.Med.Sc (Ortho)
Clinical fellow
Dr Milind Chaudhary
Orthopaedic Surgeon
Centre For Ilizarov Techniques
AKOLA
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CAM PINCER
There are two types of Femoro Acetabular Impingement. Cam Type has a deformity of
the femoral head or the Head-Neck junction with a reduced offset. The Pincer type is
due to retroversion of acetabulum with overcoverage. These can be diagnosed on plain
xrays of the Hip . Awareness of this condition. Enable us to see more and more of these
pathologies in day to day practice
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Ganz safe surgical approach to the hip was followed.as described in this landmark
article in the British Journal of bone and joint surgery.
Full exposure of the head of the femur and the acetabulum is possible along with
protection of blood supply to the femoral head from the branches of Medial Femoral
Circumflex artery..
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Surgical Steps
Lateral position
Kocher incision
Trochanteric flip osteotomy
Dissection betn Piriformis & Gl. Minimus
Z- shaped capsulotomy
Dislocation of femoral head
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Trochanteric Flip osteotomy has attachments of Gluteus Medius & Vastus Lateralis & is
about 1.5 cm thick. Z shaped capsulotomy is done and labrum is preserved. Hip is
dislocated in External rotation and full 360 degree view is obtained.
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17 pts in 5 yrs
AVN…………………………………………………..9
Perthes ……………………………………………2
Dysplastic hip………………………………….2
Retroversion & Pincer FAI……………2
Pipkin Type II #...........……………….....1
Neck exostosis…………………………………1
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TYPES OF OPERATION
Osteochondroplasty (done in all patients)
Intertrochanteric osteotomy ( in 3)
Intra-articular reduction osteotomy ( in 2)
Pipkin # Fixation (1)
Excision of exostosis (1)
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26 yrs / M 2 yrs old # NOF
AVN lead to partial collapse and extrusion of the femoral head. Anterior aspect of head
had a large bump caused by the extrusion seen on cross table lat xray.
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Trochanteric flip osteotomy Exposed femoral head
osteochondroplasty Excised pieces
Trochanteric Flip osteotomy done. Head has large anterior bump due to its extrusion
while in the soft state of AVN.. Resection of all extra bone is done, Offset is recreated.
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Post-op
There is no trendelenberg lurch.
Hip scores and range of motion
have increased. There is no pain.
The head is spherical.
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Perthes
20 yr old with Perthes. Trochanter is high
riding and head is oval and large with
reduction of Adduction & Internal rotation in
flexion. There is a mild lurch.
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. Lateral Incision was taken. The Gibson interval was located between the gluteus
maximus and the tensor fascia lata musclesi. The trochanteric osteotomy was
performed such that the flip fragment was only 1.5 cm thick. It contained the insertions of
the gluteus medius and the vastus lateralis and a part of the gluteus minimus as well
Capsulotomy was done to approach the headwhich was dislocated with the hip in external
rotation.
Reduction of the or worried and extruded part of the head was done to recreate semblance
of spherical shape. An osteochondral plasty was performed and hence Head reduction
was done.Sean the picture on the right is the amount of bone that was resected
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Gr. Troch advancement Harr
is H
ip S
core
:88
Trochanter is brought down and Relative Neck lengthening has been done.
Tip of trochanter to centre of Femoral head are now in same line. There is mild
heterotopic ossification and the site of surgery which is not symptomatic and
does not block the movements
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He has full movements in the Hip with no lurch, full abilty to
squat and sit cross legged.
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Harris Hip Score= 39.6
Severe destruction of head after AVN. Since the last 2 years Has severe pain and
cannot walk. Deformed and extruded Femoral head. Which has become saddle shaped.
The portion under the acetabular lip has undergone maximum damage and is
depressed. The lateral part of the femoral head is extruded also and the cartilage is in
reasonably good shape though very few movements of the hip joint other than 60° of
flexion
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Ganz’s Safe Surgical Dislocation & Intra-Articular Osteotomy
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Trochanteric Flip osteotomy
1.5 cm thick Gl. Medius V. Lateralis Gl. Minimus(partly)
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Capsulotomy
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Saddle shaped & distorted femoral head
Saddle shaped distortion of Femoral head. Central portion under lip of acetabulum
maximally damaged with depression. Medial portion and extruded Lateral portion have
relatively good cartilage.
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Intra-articular osteotomy
Central damaged portion resected. Adequate bleeding noted from the cut bony surfaces.
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Reduced fragments
Lateral Fragment brought close to the medial large fragment. Contour was matched.
Reasonably spherical shape was achieved.
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Screws fixation Reduced femoral head
Head was fixed with screws and reduced. Had good Range of Motion after
reduction into acetabulum.
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Imm. PostOp
Head shape was recreated as best as possible. Patient allowed to walk partial
weight bearing.
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2 yrs follow- up
At two years there is no sign of AVN. Head contour is maintained.
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Minimal lurch is seen at one year. Adduction –Abduction are now free.
Rotations were last to resume after 9 months
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HARRIS HIP SCORE >90
He has absolutely no pain in the hip and only has restricted External rotation and
cannot sit cross legged. His hip score is well above 90 now.
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Retroverted Hip AP
False profile
Cross table - Lat
It is easy to diagnose Pincer Impingement caused by a retroverted hip on plain xrays.
This hip has a combination of CAM and pincer impingement
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Dislocated femoral head
Loss of Femoral Head Neck offset is seen .
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Medial displacement osteotomy
Osteochondroplasty
We performed a Osteochondroplasty with
recreation of the Head Neck Offset and also
performed a medial displacement
osteotomy to reduce loads on the Hip.
We should have performed a rim-trim but did
not have the skills at that time.
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No pain
She has no pain 3 years following surgery. She can sit cross legged.
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Pipkin type II #
We also used this approach to fix a Type II Pipkin # as it gave us an excellent reduction.
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RESULTS
No AVN
No trochanteric NU
Hip ROM better in most.
Harris Hip Score - improved in all cases
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Take Home Message
If patient does not want a THR
Safe surgical dislocation
can improve the life of the Hip joint
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