surgery

Periosteal Osteosarcoma

 

Definition

 

Intermediate grade chondroblastic osteosarcoma arising from surface of long bones

 

Epidemiology

 

Extremely rare

- 1% of all osteosarcomas

- 25% of surface osteosarcomas

 

Age 15-25

 

Location

 

Typically anterior proximal tibia

- diaphysis of major long bones

- humerus

 

Pathology

 

Greater trochanter pain syndrome

Greater trochanteric pain syndrome

 

Definition

 

Chronic lateral trochanteric pain

- abductor tendon tendonitis

- trochanteric bursitis

 

Epidemiology

 

Women 40 - 60 years old

 

Mechanism

 

? repetitive friction of iliotibial tract over GT

 

Symptoms

 

Pain over upper lateral thigh with activity

- often related to hip flexion

 

Facet Joint Dislocation

Definition

 

Facet joint dislocations secondary flexion distraction injury

 

Epidemiology

 

10%

 

Stages

 

1. Unifacet subluxation - interspinous process widening

2. Unifacet dislocation - 25% anterolisthesis

3. Bifacet dislocation - 50% anterolisthesis

4. Complete vertebral translation - 100% anterolisthesis

 

Unilateral Facet Joint Dislocation

 

TSA Technique

TSR APTSR Lateral

 

Goal

- head that translates 50% in all directions

- allows 30o ER with arm at side

- stable posteriorly

 

Pre-Op 

- antibiotics

- consider specific Propionobacterium cover

Surgery

Indications 

 

1. Significant functional impairment

 

2. PIPJ contracture

- originally thought to intervene early

- Macfarlane showed residual FFD always about 30o

- may need to release  check rein ligaments / accessory collateral ligaments

 

3. MCPJ contracture >30o

 

4. Trigger fingers

- must do limited fasciectomy