xray

Hallux Rigidus

Definition

 

Painful restriction of dorsiflexion of the great toe 

- secondary to degenerative changes in MTPJ

- initially pain and synovitis

- osteophytes don't form medially or on plantar aspect

 

Epidemiology 

 

Two peaks

1.  Adolescence F > M

2.  Middle Age M > F

 

Aetiology

 

Often Idiopathic

 

Trauma

Achilles Tendonopathy

Definition

 

Inflammation of achilles tendon; insertional or noninsertional

 

Spectrum

 

Tendonitis / Tendonosis / Rupture

 

Anatomy

 

Triceps surae

- medial and lateral gastrocnemius

- soleus

- surrounded by paratenon which allows gliding and supplies nutrition

 

Inserts middle 1/3 calcaneal tuberosity

- 2 x 2 cm area

- 90o rotation distally

 

Retrocalcaneal bursa (x2)

Calcaneo Cavus

Definition

 

Pure Cavus Deformity characterised by 

- dorsiflexion of Calcaneus 

- plantarflexion of Forefoot

 

Aetiology

 

Weakness of Tendoachilles

 

Usually neuromuscular

- Polio (Most common worldwide) 

- Spina bifida

- CP (can be due to overcorrection of T Ach)

- Spinocerebellar Degen (Friedreich's Ataxia)

Freiberg's

Definition

 

Crushing osteochondritis of metatarsal head

 

Frieberg's

 

Epidemiology

 

Usually 2nd metatarsal (80%)

- occasionally third

- can occur in any

 

Age 10-15 years

- peak 15 year old girls

- F:M = 3:1

- occurs during the growth spurt at puberty

 

Bilateral in 6%

 

Aetiology

 

Ankle Osteoarthritis

AetiologyAnkle OA

 

Trauma

 

A. Ankle Fracture
 

Types

- Weber A 4%
- Weber C 33%
- Displaced large posterior malleolar

 

Any OA develops in first 2 years

 

Causes

- articular damage at time of injury
- non anatomical reconstruction
- complications i.e. infection

 

Thoracic Disc Disease

Epidemiology

 

0.05% incidence

- rare due to stabilising effect of rib cage

- even more rare to have symptoms

 

Reasoning

1.  Discs are narrower

2.  Foramina larger

3.  Thoracic spine

- facet joints orientated for rotation

- lumbar spine for flexion extension

- flexion is typically the motion which ruptures annulus

 

Anatomy