knock-knee
RareColloquial, Medical
Definition
Meaning
A physical condition where the knees angle inward and touch or 'knock' together when standing upright, while the ankles remain apart; medically known as genu valgum.
Informally used to describe someone who has this condition, as in 'He's a bit knock-kneed.' Also used metaphorically to suggest physical awkwardness, weakness, or timidity.
Linguistics
Semantic Notes
Primarily a noun denoting a physical condition. Can function attributively (e.g., 'a knock-knee gait'). The metaphorical extension is dated and often derogatory.
Dialectal Variation
British vs American Usage
Differences
Term is used identically in both varieties. Spelling sometimes hyphenated ('knock-knee') or as one word ('knockknee'); hyphenated is more common in formal writing. The related adjective is 'knock-kneed'.
Connotations
Primarily a descriptive medical or casual term. The metaphorical use (implying cowardice) is archaic and potentially offensive in both regions.
Frequency
Slightly higher frequency in UK English, but remains a low-frequency term overall in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
have knock-kneebe knock-kneedsuffer from knock-kneecorrect knock-kneeVocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not applicable.
Academic
Used in medical, physiotherapy, and paediatric texts.
Everyday
Used informally to describe a noticeable physical trait, often in children.
Technical
Standard term in orthopaedics and podiatry, often synonymous with 'genu valgum'.
Examples
By Part of Speech
adjective
British English
- The toddler had a slightly knock-kneed stance.
- He walked with a knock-kneed gait after the marathon.
American English
- The pediatrician said the knock-kneed appearance should correct itself.
- She was self-conscious about being knock-kneed as a teenager.
Examples
By CEFR Level
- The little boy has knock-knee.
- His knees touch when he stands.
- Some children have temporary knock-knee as they grow.
- The doctor is checking for knock-knee during the examination.
- Pronounced knock-knee can lead to joint pain and an awkward walking pattern.
- The physiotherapist recommended exercises to help correct his mild knock-knee.
- The aetiology of pathological knock-knee can be multifactorial, involving genetic, metabolic, or traumatic causes.
- Biomechanical analysis revealed that the athlete's chronic knee strain was exacerbated by residual genu valgum from childhood.
Learning
Memory Aids
Mnemonic
Imagine someone walking and their knees literally KNOCKING together with each step.
Conceptual Metaphor
PHYSICAL DEFORMITY IS WEAKNESS (in the archaic metaphorical sense).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate literally as 'стучать коленом'. The standard medical term is 'вальгусная деформация коленных суставов' or 'Х-образные ноги'. The informal term is 'колени иксом'.
Common Mistakes
- Confusing 'knock-knee' (knees touch) with 'bow legs' (ankles touch).
- Using 'knock-knee' as a verb (e.g., 'He knock-knees'). The correct verb phrase is 'to be knock-kneed' or 'to have knock-knee'.
Practice
Quiz
What is the primary technical/medical synonym for 'knock-knee'?
FAQ
Frequently Asked Questions
In young children, mild knock-knee is often a normal part of growth and corrects itself. Persistent or severe cases in older children or adults may require medical evaluation, as it can lead to joint pain and arthritis.
Historically, 'knock-kneed' was used metaphorically to imply timidity or weakness. This usage is now considered archaic, derogatory, and best avoided.
The opposite condition is 'bow legs' (medically: genu varum), where the knees curve outward, leaving a gap between them when the ankles are together.
Yes, the standard written forms are the noun 'knock-knee' (or 'knock knees') and the adjective 'knock-kneed'. The hyphen is often retained to ensure clarity.