management

Definition

Inflammation and degeneration of the achilles tendon in the midsubstance 2 - 6 cm from insertion

Tsukayama Classification

Incidence

Timing

Early < 3 - 6 months

- most common

Definition

Benign intramedullary cartilage lesion

Etiology

Cause

Movement of iliopsoas tendon over femoral head / iliofemoral ridge / iliofemoral ligament

Can be seen following THA with cup impingement

Symptoms

Audible or palpable snap in the groin

Hip moves

- from flexed / abducted / externally rotated position

- to extended / internally rotated position

Incidence

10% of the population - usually painless

Femoral Neck Stress Fractures

Aetiology

Athletes with increase activity / distance

Women with eating disorders /  amenorrhea

Types

Compression / inferior neck

- < 50% protective weight bear

- > 50% emergent ORIF

Tension side / superior neck

- emergent ORIF

Types

1.  Capsular avulsions

2.  Body / Nutcracker fracture

Nutcracker fracture

Epidemiology

- rare

Mechanism

- forced eversion / abduction of forefoot

- cuboid crushed between 4th and 5th MT and calaneum

Pathology

- displaced cuboid fracture with subluxation of tarsus

Definition

Coronal plane fracture of distal femoral condyle

- intra-articular

- often only attachment is posterior capsule

Epidemiology

Rare

Mechanism

Usually a severe valgus trauma

Xray