KIP Infrastructure
2.16.0 - release

This page is part of the KIP Infrastructure (v2.16.0: Release) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: Walch classification

Official URL: https://kip.rkkp.dk/fhir/CodeSystem/WalchClassification Version: 2.16.0
Active as of 2022-10-06 Computable Name: WalchClassification

Walch classification; Link: https://radiopaedia.org/articles/walch-classification-of-glenoid-morphology-1

This Code system is referenced in the content logical definition of the following value sets:

This case-insensitive code system https://kip.rkkp.dk/fhir/CodeSystem/WalchClassification defines the following codes in an undefined hierarchy:

LvlCodeDisplayDefinition
1 type_a Type A Type A: centered humeral head, concentric wear, no subluxation of the humeral head
2   type_a1 Type A1 Type A1: minor central erosion
2   type_a2 Type A2 Type A2: major central erosion, humeral head protruding into the glenoid cavity
1 type_b Type B Type B: humeral head subluxated posteriorly, biconcave glenoid with asymmetric wear
2   type_b1 Type B1 Type B1: narrowing of the posterior joint space, subchondral sclerosis, osteophytes
2   type_b2 Type B2 Type B2: biconcave aspect of the glenoid with posterior rim erosion and retroverted glenoid
2   type_b3 Type B3 Type B3: monoconcave and posterior wear with >15° retroversion or >70% posterior humeral head subluxation, or both
1 type_c Type C Type C: Dysplastic glenoid with at least 25° of retroversion not caused by erosion
2   type_c1 Type C1 Type C1: dysplastic glenoid with >25° retroversion regardless of the erosion
2   type_c2 Type C2 Type C2: biconcave, posterior bone loss, posterior translation of the humeral head
1 type_d Type D Type D: glenoid anteversion or anterior humeral head subluxation <40°