treatment

 Fractures

1.  Neck of 5th Metacarpal

2.  Metacarpal Shaft

3.  Metacarpal Head

4.  Base of Metacarpal Fracture Dislocations

5.  MCPJ dislocations

1.  Neck of 5th Metacarpal Fracture

Non operative Management

Accept 45^o angulation

- will have finger extensor lag, but will recover

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

Definition

Pathological bone formation in soft tissues

Epidemiology

In elbow

- 3% of trauma

- 89% if head injury + trauma

Types

Completely different

1.  Myosisitis Ossificans Circumscripta

- post traumatic

- more common

- recognised as a consequence of neurological injury

Aetiology

Knee forms from 3 separate compartments

Plica represents normal embryonic synovial septum that persists into adult life

Epidemiology

20% of knees have medial patellar plica at arthroscopy

Symptomatic plicae much less common 1-2%

Mean age 14

Types

1.  Infrapatellar (ligamentum mucosum) 

Definition

Mid-substance calcification of the rotator cuff

- part of a metaplasia secondary to hypoxia

Aetiology

2 groups of patients

Definition 

Failure of fusion of adjacent ossification centers

Epidemiology

Incidence 3%

Bilateral in 60%

Anatomy

4 ossification centers present in acromion

- pre-acromion

- mesoacromion

- metaacromion

- basiacromion