osteoarthritis

STT OA

Definition

 

OA of the scapho-trapezium-trapezoidal joints

 

Epidemiology

 

50% patients with CMC OA have STT OA

F > M

 

Xray

 

STT OASTT Arthritis 2

 

Management

 

Management

Acute management

 

Resuscitation

 

EMST

Neurovascular assessment

Investigations - exclude Pipkin, NOF

Emergent reduction / skeletal stabilisation

Assess stability

Re-evaluate sciatic nerve

 

Insertion Femoral Steinman Pin

 

Indications

- displaced acetabular fracture

 

Tibial Plateau

 

Schatzker Classification

 

I.  Lateral Spilt 

- seen in young patient

- lateral meniscus can be incarcerated in fracture

 

Tibial Plateau Schatzker 1

 

II.  Lateral Split Depression

- often seen in young patients with high energy injuries

- vary in severity

 

Pisiform

Subluxation & dislocation

 

Diagnosis

 

Pisotriquetral view

- forearm positioned 30° supinated off the neutral position

- loss of symmetry between the pisiform and triquetrum is required for the diagnosis

- carpal tunnel view may be helpful in further assessment of the joint

 

Osteoarthritis

 

Clinical

 

More common problem