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Journal Club on LPDS
Dr. Shubhanshu
Introduction
• Posterior instability 10% of all shoulder
dislocation
• Trauma(59%), Seizure(40%), Electric shock(1%)
• A/W Reverse Hill-Sacks lesion
• Pain posterior part of shoulder & weakness
rather than instability
• Diagnostic Trap as it can be missed, (frozen
shoulder)
• Flattening at anterior aspect of shoulder, fixed
internal rotation with adduction deformity
Investigation
• Radiographs- AP/Lateral
• CT with 3-D reconstruction
• MRI shoulder
RHSL related
• Early onset Osteoarthritis
• Chronic posterior shoulder instability
Treatment
• Operative management for lesion affects >10 articular
surface
• 25-40% reconstruction, >40% prosthesis
• RHSL
– Subscapularis tendon to humeral defect -McLaughlin
procedure
– Lesser tuberosity transfer with subscapularis tenodesis
fixed with Double row suture anchor(Modified McLaughlin
procedure)
– Lesser tuberosity transfer(Hawkins modification
– Disimpaction with bone grafting
– Allograft reconstruction
– Shoulder Arthroplasty
Surgical Steps
• Diagnostic Arthroscopy
• Delto-pectoral Approach
• Breach chair position
• RHSL identified on External Rotation, Head
Engagement with posterior glenoid rim seen
20 degree of Internal rotation.
• Biceps Tenotomy
Surgical Steps
• Aim to decrease alpha angle by transfering lesser
tuberosity and subscapularis tenodesis
• Debride injured cartilage
• Rectangular osteotomy around lesser tuberosity
by oscillating saw from bicipital groove parallel to
RHSL
• Place anchor into RHSL 8-10mm from medial
border of osteotomy
• Double pulley suture anchor technique through
subscapularis tendon
Rehabilitation
• Sling/Brace with an abduction(30) ER(10)
pillow to protect posterior repair.
• No pendulum excercises untill 4 weeks
• At 6 week, wean from sling and active ROM
• 12 weeks, strenthening excersices
• 16 weeks, more strenthening excercises
• 6 month, all activites
Outcomes
• 2 year after follow up: asymptomatic shoulder
• American Shoulder Elbow Surgeon – 91
• Western Ontario shoulder Instability Index –
8.6%
• Oxford Shoulder score- 43
• Simple Shoulder Test - -11
Outcomes
Take Home Message
• LPDS can be missed
• Arthroscopic and open surgery both had good
outcome.
• This procedure for joint preservation in
extensive humeral head defects.
• Alternative to shoulder arthroplasty.

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Journal Club on LPDS.pptx

  • 1. Journal Club on LPDS Dr. Shubhanshu
  • 2. Introduction • Posterior instability 10% of all shoulder dislocation • Trauma(59%), Seizure(40%), Electric shock(1%) • A/W Reverse Hill-Sacks lesion • Pain posterior part of shoulder & weakness rather than instability • Diagnostic Trap as it can be missed, (frozen shoulder) • Flattening at anterior aspect of shoulder, fixed internal rotation with adduction deformity
  • 3. Investigation • Radiographs- AP/Lateral • CT with 3-D reconstruction • MRI shoulder
  • 4. RHSL related • Early onset Osteoarthritis • Chronic posterior shoulder instability
  • 5. Treatment • Operative management for lesion affects >10 articular surface • 25-40% reconstruction, >40% prosthesis • RHSL – Subscapularis tendon to humeral defect -McLaughlin procedure – Lesser tuberosity transfer with subscapularis tenodesis fixed with Double row suture anchor(Modified McLaughlin procedure) – Lesser tuberosity transfer(Hawkins modification – Disimpaction with bone grafting – Allograft reconstruction – Shoulder Arthroplasty
  • 6. Surgical Steps • Diagnostic Arthroscopy • Delto-pectoral Approach • Breach chair position • RHSL identified on External Rotation, Head Engagement with posterior glenoid rim seen 20 degree of Internal rotation. • Biceps Tenotomy
  • 7. Surgical Steps • Aim to decrease alpha angle by transfering lesser tuberosity and subscapularis tenodesis • Debride injured cartilage • Rectangular osteotomy around lesser tuberosity by oscillating saw from bicipital groove parallel to RHSL • Place anchor into RHSL 8-10mm from medial border of osteotomy • Double pulley suture anchor technique through subscapularis tendon
  • 8. Rehabilitation • Sling/Brace with an abduction(30) ER(10) pillow to protect posterior repair. • No pendulum excercises untill 4 weeks • At 6 week, wean from sling and active ROM • 12 weeks, strenthening excersices • 16 weeks, more strenthening excercises • 6 month, all activites
  • 9. Outcomes • 2 year after follow up: asymptomatic shoulder • American Shoulder Elbow Surgeon – 91 • Western Ontario shoulder Instability Index – 8.6% • Oxford Shoulder score- 43 • Simple Shoulder Test - -11
  • 11. Take Home Message • LPDS can be missed • Arthroscopic and open surgery both had good outcome. • This procedure for joint preservation in extensive humeral head defects. • Alternative to shoulder arthroplasty.