Varus deformity

Cubitus varus and cubitus valgus.
Specialty| Orthopedics

A varus deformity is an excessive inward angulation (medial angulation, that is, towards the body's midline) of the distal segment of a bone or joint. The opposite of varus is called valgus. Ex: Varus deformity results in a decreased Q angle of the knee joint.

The terms varus and valgus always refer to the direction that the distal segment of the joint points.

For example, in a valgus deformity of the knee, the distal part of the leg below the knee is deviated outward, in relation to the femur, resulting in a knock-kneed appearance. Conversely, a varus deformity at the knee results in a bowlegged with the distal part of the leg deviated inward, in relation to the femur. However, in relation to the mid-line of the body, the knee joint is deviated towards the mid-line. EX: Valgus deformity results in an increased Q angle of the knee joint.

## Contents

* 1 Forms
* 2 Etymology
* 3 See also
* 4 References
* 5 External links

## Forms[edit | edit source]

Cubitus varus, 20°- varus deformity of the right elbow.

* Hip: coxa vara — the angle between the head and the shaft of the femur is reduced, resulting in a limp.[1]
* Knee: genu varum (from Latin genu = knee) — the tibia is turned inward in relation to the femur, resulting in a bowlegged deformity.
* Ankle: talipes varus (from Latin talus = ankle and pes = foot). A notable subtype is clubfoot or talipes equinovarus, which is where one or both feet are rotated inwards and downwards.[2][3]
* Toe: hallux varus (Latin hallux = big toe) — inward deviation of the big toe away from the second toe.
* Elbows: cubitus varus (Latin cubitus = elbow) — turned inward elbows

## Etymology[edit | edit source]

The terminology is made confusing by the etymology of these words.

* The terms varus and valgus are both Latin, but confusingly, their Latin meanings conflict with their current usage. In current usage, as noted above, a varus deformity of the knee describes bowed legs, but in the original Latin, varus meant "knock-kneed."[4][5] Similarly, while a valgus deformity of the knee would currently describe knocked knees, the original Latin meaning was "bow-legged"[6][7]
* Application of these words in adjectival form to other portions of the body by the medical community has resulted in their definitions changing so that they now refer to the angle of the distal segment (i.e. valgus impaction in a Garden I femoral neck fracture).
* It is correct for a knock-kneed deformity to be called both a varus deformity at the hip (coxa vara) and a valgus deformity at the knee (genu valgum); although the common terminology is to simply refer to it as a valgus knee.

When the terminology refers to a bone rather than a joint, the distal segment of the bone is being described. Thus, a varus deformity of the tibia (i.e. a mid-shaft tibial fracture with varus deformity) refers to the distal segment in a varus alignment compared to the proximal segment.[citation needed]

## See also[edit | edit source]

* Valgus deformity

## References[edit | edit source]

1. ↑ "Congenital Coxa Vera: eMedicine Orthopedic Surgery". 2019-05-29. Archived from the original on 2023-03-20. Retrieved 2023-08-15. `{{cite journal}}`: Cite journal requires `|journal=` (help)
2. ↑ Gibbons, PJ; Gray, K (September 2013). "Update on clubfoot". Journal of Paediatrics and Child Health. 49 (9): E434–7. doi:10.1111/jpc.12167. PMID 23586398. S2CID 6185031.
3. ↑ "Talipes equinovarus". Genetic and Rare Diseases Information Center (GARD). 2017. Archived from the original on 15 October 2017. Retrieved 15 October 2017.
4. ↑ "varus. Charlton T. Lewis, Charles Short, A Latin Dictionary". Archived from the original on 2023-05-23. Retrieved 2023-08-15.
5. ↑ Harvard University Dept. of the Classics: Harvard Studies in Classical Philology, Volume 8, page 109. Ginn & Company, 1897. 1897.
6. ↑ "valgus. Charlton T. Lewis, Charles Short, A Latin Dictionary". Archived from the original on 2023-03-31. Retrieved 2023-08-15.
7. ↑ Harvard University Dept. of the Classics: Harvard Studies in Classical Philology, Volume 8, page 109. Ginn & Company, 1897. 1897.

## External links[edit | edit source]

Classification|

* ICD-10: M21.1

|

* Canale & Beaty: Campbell's Operative Orthopaedics, 11th ed. - 2007 - Mosby, An Imprint of Elsevier

* v
* t
* e

Acquired musculoskeletal deformities (M20–M25, M95, 734–738)

Upper limb|

| shoulder|

* Winged scapula
* Adhesive capsulitis
* Rotator cuff tear
* Subacromial bursitis

|

elbow|

* Cubitus valgus
* Cubitus varus

hand deformity|

* Wrist drop
* Boutonniere deformity
* Swan neck deformity
* Mallet finger
* Finger dislocation

Lower limb|

| hip|

* Protrusio acetabuli
* Coxa valga
* Coxa vara

|

leg|

* Unequal leg length

patella|

* Luxating patella
* Chondromalacia patellae
* Patella baja
* Patella alta

foot deformity|

* Bunion/hallux valgus
* Hallux varus
* Hallux rigidus
* Hammer toe
* Foot drop
* Flat feet
* Club foot

knee|

* Genu recurvatum

Head|

* Cauliflower ear

General terms|

* Valgus deformity/Varus deformity
* Joint stiffness
* Ligamentous laxity

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