Update on Trauma and Orthopaedic Surgery Henley Management College 8 th May 2008.
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Transcript of Update on Trauma and Orthopaedic Surgery Henley Management College 8 th May 2008.
Update on Trauma and Orthopaedic Surgery
Henley Management College8th May 2008
Hip arthroscopy
Indications for hip arthroscopy
• Labral tears • Loose bodies / foreign bodies• Ligamentum teres tears• Synovial chondromatosis• Sepsis – diagnosis and treatment• Assessment of painful hip– Chondral lesions not seen on Xray / MRI
Pain
• C-sign distribution• Groin• Referred to L3
dermatome– (Anteromedial thigh)
Characteristic Hip Symptoms
Symptoms worse with activities:• Twisting / turning /changing directions• Rising from seated position (catching)• Difficulty with stairs (up and down)• Difficulty with getting in / out of cars• Difficulty with socks / toe nails / shoes etc.• Dyspareunia
Peripheral Compartment
1. Anterior neck2. Medial neck3. Medial head4. Anterior head5. Lateral head6. Lateral neck7. Posterior
Dienst et al (2001) Arthroscopy 17, 924
Central Compartment
• Articular cartilage– Acetabulum– Femoral head
• Cotyloid fossa• Ligamentum teres• Labrum
So how do we do it…
Central Compartment Set - Up
Problems• Large distraction force
required• Specialist equipment• Operative time limited
by distraction time• Complications
Complications
• Nerve traction injury– Pudendal and sciatic nerves
• Direct nerve injury (portal placement)– Femoral and sciatic nerves
• Perineal oedema / bruising / tears• Chondral scuffing
Supine Position
• Patient positioned supine on fracture table
• Oversized padded perineal post– 12cm outer diameter– Positioned laterally
against the thigh
Table Options
Maquet Fracture TableS&N Hip Positioning System
Lateral Position
Working Portals
Establishing Portals - 1Anterolateral portal first – (safe zone)
Establishing Portals - 2
Establishing Portals - 3Subsequent portals under direct vision
Labral Tears
Loose Bodies
Femoroacetabular impingement
Abutment of anterior femoral head-neck junction against anterior aspect of acetabular rim or labrum
Femoroacetabular impingement
• First recognised as consequence of PAO– Dysplastic acetabulum repositioned in more
anterior and lateral position– Proximal femur (insufficient head-neck offset)
abutted against newly positioned anterior aspect of the acetabular rim in flexion, IR and adduction
Femoroacetabular impingement
• Subsequently recognised in young active adults who presented with groin pain, and who had not had PAO
• Arthrotomies revealed damage to the anterior aspect of the acetabular labrum and articular cartilage– Similar to what is seen in Perthes and SCFE– All have reduction in femoral head-neck offset
Imaging of FAI
• Femoral neck bump on Xray or MRI
• Acetabular retroversion• Coxa profunda• Protrusio acetabuli• Ossification of rim
Alpha angle – fat sat T1 MRIKassarjlan et al: Radiology 2005; 236: 588-592
Abnormal if > 55 degrees
Cam and Pincer Impingement
Symptoms of FAI
• Slow onset of groin pain• Pain after trivial traumatic incident• Exacerbated by periods of activity• Pain on prolonged sitting and walking• Limited range of motion– IR and adduction in flexion
Peripheral Compartment
Controversies
• Will hip arthroscopy delay onset of arthritis
• Is it better than mini-open procedures for FAI
Thank You!
www.readingorthopaediccentre.com
Any questions….