ArticleThe Journal of international medical research2020
Comparison of two different on-shelf femoral stems for Crowe type IV developmental dysplasia of the hip.
Article in The Journal of international medical research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 4 citations in OpenAlex.
- Modular and Non-modular Conical Tapered Stems in Total Hip Arthroplasty for Crowe III and IV Hip Dysplasia.Clinics in orthopedic surgery · 2025Article
- The MRI-based 3D morphologic changes of knee meniscus under knee weight-bearing and early flexion conditions.Scientific reports · 2021Observational
- Three-dimensional morphological study of the proximal femur in Crowe type IV developmental dysplasia of the hip.Journal of orthopaedic surgery and research · 2021Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThis study was performed to evaluate the proximal anatomical compatibility of stems for treatment of Crowe IV developmental dysplasia of the hip (DDH) using a previously developed three-dimensional comparison technique.
methodsPatients with Crowe IV DDH who underwent computed tomography were retrospectively analyzed. The femoral medullary canals were three-dimensionally reconstructed, and models of cementless modular (S-ROM; DePuy Synthes) and conical (Wagner Cone; Zimmer Biomet) implants were used for virtual implantation. The negative point percentages (NPPs) were applied to verify fitting. The average distance (deviation) and the root mean square of the distance (RMSd) were used to quantify geometric compatibilities.
resultsFour (16.7%) and 12 (50.0%) femoral medullary canals could not be fitted properly with either the modular or conical implant. The NPPs in the distal comparison region were significantly greater in the conical than modular group. The deviation was significantly smaller in the modular than conical group. The RMSd was also significantly smaller in the modular than conical group.
conclusionsCompared with conical implants, modular implants might be more effectively used in patients with Crowe type IV DDH. However, some Crowe IV DDH femurs with severe deformity cannot be fitted with either of these two on-shelf implants.
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