Metatarsus varus
- adduction of the forefoot at the TMTJ
Intrauterine positional deformity / packaging defect
1:1000
- M = F
- bilateral in 50%
- 10% have CDH
Unclear
Theories
- intrauterine positioning defect
- prone nursing
Malignant Fibrous Histiocytoma
Characterised by heterogenous population of pleomorphic spindle cells
- organised in a characteristic storiform or "starry night" pattern
Cell of origin unknown
- primitive mesenchymal cell
- allowing both features of a macrophage (hence histiocyte)
- and collagen producing cell (hence fibroblast)
Uncommon
- 4% OS
Females more common
- similar to GCT
Less aggressive locally
- less metastasis
- size / location & duration of symptoms don't correlate with outcome
Arise from cortex of bone / periosteum
- parosteal
- periosteal
- high grade juxtacortical
Non Ossifying Fibroma
A hamartomatous defect in the metaphyseal cortex of skeletally-immature adolescents
Fibrous cortical defect
- < 2cm in diameter
Non ossifying fibromas
- > 2cm
Developmental hamartoma in which areas of the skeleton fail to mature normally
- remain indefinitely as immature, poorly mineralized trabeculae
Hamartoma of bone and fibrous tissue
Rare triad of
1. Fibrous Dysplasia
Rare cartilage tumour
1% of bone tumours / rare
- typically in adolescents
Usually benign
- but aggressive / frankly malignant behaviour reported
- locally aggressive
- can have pulmonary metastasis
Chronic instability due to rupture of one or more parts of the lateral ligament
Progressive injury
1. Anterolateral capsule
2. ATFL
3. CFL
Can lead to ankle OA over time
Partial or complete rupture of one or parts of lateral ligaments of ankle
- common ankle sprain
Lateral ligaments sprains are the most common ligamentous injuries of the human body
- account for approximately 15% of all athletic injuries
- it is estimated that there is one ankle inversion injury per day per 10,000 people
Most common young males
- average age 27
Different entity to thoracic Scheuermann's
- end plate abnormal but no kyphosis or wedging
Self - limiting condition
Young athlete / labourer
Adolescent who presents with low grade levels of low back pain
- more pain than thoracic
Structural kyphosis of thoracic or thoracolumbar spine
- characterised by vertebral wedging & subsequent growth disturbance of vertebral end plate
1. Kyphosis > 45°
2. > 5° wedging 3 or more adjacent apical vertebrae
Other features
- Schmorl nodes