Vertical Shear
Definition
Unstable injuries
Complete disruption of both the anterior and posterior ring


Unstable injuries
Complete disruption of both the anterior and posterior ring
Subscapularis failure
Rotator cuff failure
Instability
Infection
Periprosthetic fracture
Aseptic loosening
Neurological injury
Parada et al. J Should Elbow Surg 2021
- 2224 aTSA complication rate 11%, revision rate 5.6%


Osteoarthritis
Rheumatoid arthritis
Avascular necrosis

Poor soft tissues
- prohibit ORIF
Non union
Infected non uniion
Malunion / deformity
Bone loss / bone transport / LLD
Metaphyseal
Extra-articular

Adolescent boys
Proximal tibia / primary ossification centre
Tibial tuberosity / secondary ossification centre
- eventually merges with primary ossification centre
Type I - Tibial tuberosity ossification only
< 60 with good bone stock and preserved joint space
Union rates increased with anatomical reduction
Options
- closed reduction
- open reduction / if closed reduction fails
Accept
- no varus
- < 15o valgus
- < 10o AP plane
Garden 1 / 2
ORIF
- ~ 15% displacement rate with non operative management
- increased risk of non union
- reduced hospital in patient stays
Cannulated screws
DHS + derotation screw
Patient > 70
Gjertsen et al JBJS Am 2010
- 4335 patients > 70 with displaced subcapital fractures
- minimum 1 year follow up
- 1 year mortality same in each group / 25%
- 22% reoperation in ORIF v 3% in hemiarthroplasty
- more pain / higher dissatisfaction / lower quality life in ORIF group
Hemiarthroplasty
- unipolar monoblock
- unipolar modular