Valgus Instability S53.449A 841.1

ICD-9	Classification / Treatment
Etiology / Natural History	Associated Injuries / Differential Diagnosis
Anatomy	Complications
Clinical Evaluation	Follow-up Care
Xray / Diagnositc Tests	Review References

synonyms:

Elbow Valgus Instability ICD-10

A- initial encounter

D- subsequent encounter

S- sequela

Elbow Valgus Instability ICD-9

Elbow Valgus Instability Etiology / Epidemiology / Natural History

Generally occurs after chronic valgus overload, but can occur after acute injury.
Results from incompetance or rupture of the MCL.

Elbow Valgus Instability Anatomy

Primary constraints=ulnohumeral articulation(coronoid), medial collateral ligament(MCL), lateral collateral ligament(LCL) (King GJ, JSES 2;165:1993).
Secondary constraints=radial head, common flexor and extensor origins, capsule. (Morrey BF, CORR 1991;265:187).
Dynamic constaints=mucles which cross the elbow, mainly the triceps, anconeus and brachialis.
Anterior band of medial collateral ligament is the primary constraint to valgus instability.
See also Elbow anatomy.

Elbow Valgus Instability Clinical Evaluation

Elbow Valgus Instability Xray / Diagnositc Tests

Elbow Valgus Instability Classification / Treatment

Elbow Valgus Instability Associated Injuries / Differential Diagnosis

Radial Head Fracture
Varus posteromedial rotatory dislocation / instablity (occurs during axial loading of elbow in flexion=anteromedial Coronoid Fracture and avulsion of LCL).
Posterolateral Rotatory Instability
Terrible Triad(elbow dislocation with radial head and coronoid fracture)
Elbow Dislocation

Elbow Valgus Instability Complications

Elbow Valgus Instability Follow-up Care

Elbow Valgus Instability Review References