Pes Calcaneus Leading to Genu Recurvatum: A Distal-to-Proximal Deformity Cascade Treated by Rotating Hinge Arthroplasty: Two Case Reports.
- 1Department of Bone and Joint Surgery, Fortis Hospital, Bengaluru, Karnataka, India.
Abstract
Chronic pes calcaneus deformity alters sagittal-plane limb mechanics by anteriorly displacing the ground reaction force and may induce a persistent knee hyperextension moment. A possible distal-to-proximal deformity cascade that progressed to severe genu recurvatum and secondary knee osteoarthritis needing hinged total knee arthroplasty is complex and rarely described. The first patient is a 53-year-old woman presenting with a 25° recurvatum, while the second patient is a 73-year-old woman presenting with a 30° genu recurvatum secondary to untreated pes calcaneus. Both patients developed painful osteoarthrosis necessitating a rotating hinge knee arthroplasty. At 5 and 4 years of follow-up, respectively, they reported no pain or recurrence of deformity, and radiographic evaluation showed stable prostheses without evidence of loosening. We describe a possible distal-to-proximal deformity cascade associated with progressive genu recurvatum and secondary knee osteoarthritis requiring hinged knee arthroplasty. Rotating hinge arthroplasty has been used successfully in our study; however, further investigation is necessary to establish its long-term outcomes.
Related
- Intraoperative Proximal Fibula Fracture during Total Knee Arthroplasty for Moderate Valgus Knee Deformity: A Case Report.
- Determinants of Thoracic Reciprocal Change and Its Relationship to Proximal Junctional Kyphosis Following Lower Thoracic Fusion for Lumbar Flatback Deformity
- Preoperative Thoracic Compensation is Associated With a Lower Risk of Proximal Junctional Kyphosis After Lower Thoracic Fusion for Adult Spinal Deformity
- Posterior Capsular Release in Soft-Tissue Balancing to Correct Valgus Deformity and Flexion Contracture During Total Knee Arthroplasty.
- Preoperative spinal flexibility and proximal junctional kyphosis in adult spinal deformity surgery.
BibTeX
@article{hulse2026calcaneus,
title = {{Pes Calcaneus Leading to Genu Recurvatum: A Distal-to-Proximal Deformity Cascade Treated by Rotating Hinge Arthroplasty: Two Case Reports.}},
author = {Narayan Hulse and Santhosh C Reddy and G G Charankumar},
journal = {Journal of orthopaedic case reports},
year = {2026},
month = nov,
doi = {10.13107/jocr.2026.v16.i11.8452},
url = {https://europepmc.org/article/MED/42997114},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Pes Calcaneus Leading to Genu Recurvatum: A Distal-to-Proximal Deformity Cascade Treated by Rotating Hinge Arthroplasty: Two Case Reports.
AU - Narayan Hulse
AU - Santhosh C Reddy
AU - G G Charankumar
PY - 2026
DA - 2026/11/01
JO - Journal of orthopaedic case reports
DO - 10.13107/jocr.2026.v16.i11.8452
UR - https://europepmc.org/article/MED/42997114
AB - Chronic pes calcaneus deformity alters sagittal-plane limb mechanics by anteriorly displacing the ground reaction force and may induce a persistent knee hyperextension moment. A possible distal-to-proximal deformity cascade that progressed to severe genu recurvatum and secondary knee osteoarthritis needing hinged total knee arthroplasty is complex and rarely described. The first patient is a 53-year-old woman presenting with a 25° recurvatum, while the second patient is a 73-year-old woman presenting with a 30° genu recurvatum secondary to untreated pes calcaneus. Both patients developed painful osteoarthrosis necessitating a rotating hinge knee arthroplasty. At 5 and 4 years of follow-up, respectively, they reported no pain or recurrence of deformity, and radiographic evaluation showed stable prostheses without evidence of loosening. We describe a possible distal-to-proximal deformity cascade associated with progressive genu recurvatum and secondary knee osteoarthritis requiring hinged knee arthroplasty. Rotating hinge arthroplasty has been used successfully in our study; however, further investigation is necessary to establish its long-term outcomes.
SN - 2250-0685
SN - 2321-3817
ER -