cpak classification (Hirschmann)
86
Structured Review
Hirschmann
cpak classification
Cpak Classification, supplied by Hirschmann, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/classification/classification+cpak/pmc13274546-53-17-14
Average 86 stars, based on 1 article reviews
Cpak Classification, supplied by Hirschmann, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/classification/classification+cpak/pmc13274546-53-17-14
Average 86 stars, based on 1 article reviews
cpak classification - by Bioz Stars,
2026-09
86/100 stars
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1) Product Images from "Speaking the same language? A direct cartography between functional knee phenotypes and CPAK"
Article Title: Speaking the same language? A direct cartography between functional knee phenotypes and CPAK
Journal: Journal of Experimental Orthopaedics
doi: 10.1002/jeo2.70801
Figure Legend Snippet: Coronal Plane Alignment of the Knee (CPAK) classification with nine theoretical knee types. Source : Adapted from MacDessi et al. . aHKA, arithmetic hip–knee–ankle angle; HKA, hip–knee–ankle angle; JLO, joint line obliquity; LDFA, lateral distal femoral angle; MPTA, medial proximal tibial angle.
Techniques Used:
Figure Legend Snippet: Deterministic mapping between functional knee phenotypes (FMA mean = x ‐coordinate − TMA mean = y ‐coordinate) and CPAK classification femoral. The x ‐axis represents the femoral mechanical angle (FMA): values to the left (FMA < 93°) correspond to varus femoral orientation, values to the right (FMA > 93°) to valgus femoral orientation. The y ‐axis represents the tibial mechanical angle (TMA): values below (TMA < 87°) correspond to varus tibial orientation, values above (TMA > 87°) to valgus tibial orientation. Population means (FMA = 93°, TMA = 87°) serve as phenotypic neutrality references per the Hirschmann classification. CPAK, Coronal Plane Alignment of the Knee.
Techniques Used: Functional Assay
Figure Legend Snippet: Correspondence between functional knee phenotypes and CPAK types across femoral (FMA = x ‐coordinate) and tibial (TMA = y ‐coordinate) mechanical angle intervals. Each functional phenotype corresponds to a 3° angular interval, defined as ± 1.5° around the central femoral (FMA) and tibial (TMA) mechanical angle values. The table illustrates the theoretical mapping between these FMA–TMA intervals and the CPAK classification. When the angular interval of a phenotype intersects several CPAK regions, multiple CPAK types are listed within the same cell. CPAK, Coronal Plane Alignment of the Knee.
Techniques Used: Functional Assay
Figure Legend Snippet: Distribution of functional knee phenotypes according to the Hirschmann and MacDessi (CPAK) classifications in osteoarthritic (OA) and non‐osteoarthritic (NO) populations. CPAK distributions obtained from the Hirschmann functional phenotype cohort are compared with those reported in the original CPAK cohort (MacDessi) in NO and OA populations. Four attribution strategies were applied: mean, using the central FMA and TMA values; interval, considering the full angular ranges (±1.5°) of each phenotype; stochastic, using Monte Carlo sampling within these intervals; and rare, selecting CPAK types located at the margins of the compatible aHKA–JLO space. aHKA, arithmetic hip–knee–ankle angle; CPAK, Coronal Plane Alignment of the Knee; FMA, femoral mechanical angle; JLO, joint line obliquity; TMA, total knee arthroplasty.
Techniques Used: Functional Assay, Sampling
Figure Legend Snippet: Hirschmann‐CPAK (HCT‐9) reading grid. CPAK, Coronal Plane Alignment of the Knee; FMA, femoral mechanical angle; HCT‐9, Hirschmann–CPAK Translational grid; TMA, tibial mechanical angle.
Techniques Used:
Related Articles
Functional Assay:Article Title: Deformity in valgus knee malalignment is not only in the femur but also in tibia or both, based on demographic and morphological analysis before and after knee osteotomies. Article Snippet: Funding information None Abstract Purpose: This study aims to identify the demographic and morphological features of valgus knee deformity with unilateral osteoarthritic knee in the coronal plane.. A secondary aim was to identify the distinct phenotypes of valgus knees in Hirschmann's phenotype and the coronal plane alignment of the knee (CPAK) classifications before and after a knee osteotomy (KO).. Methods: A total of 107 patients (57 female and 50 male) with a mean age of 42.4 ± 17.2 years, who underwent varisation osteotomy for symptomatic unilateral knee osteoarthritis (OA) and constitutional valgus deformity, were enrolled in the study, and the mean follow‐up period was 29.1 ± 7.3 months. Sampling:Article Title: Deformity in valgus knee malalignment is not only in the femur but also in tibia or both, based on demographic and morphological analysis before and after knee osteotomies. Article Snippet: Funding information None Abstract Purpose: This study aims to identify the demographic and morphological features of valgus knee deformity with unilateral osteoarthritic knee in the coronal plane.. A secondary aim was to identify the distinct phenotypes of valgus knees in Hirschmann's phenotype and the coronal plane alignment of the knee (CPAK) classifications before and after a knee osteotomy (KO).. Methods: A total of 107 patients (57 female and 50 male) with a mean age of 42.4 ± 17.2 years, who underwent varisation osteotomy for symptomatic unilateral knee osteoarthritis (OA) and constitutional valgus deformity, were enrolled in the study, and the mean follow‐up period was 29.1 ± 7.3 months. |