An interventional study of Subtalar and talonavicular arthrodesis and subtalar and naviculocuneiform arthrodesis in Foot Deformity and Arthrodesis, sponsored by Cairo University. Completed at 1 site in Egypt. Open to participants aged 20 Years to 50 Years. Per ClinicalTrials.gov, last updated 2026-10-16.
Sponsored by Cairo University · Not applicable, Interventional, and Treatment
This study compares two surgical procedures for adults with painful, rigid progressive collapsing foot deformity, also known as rigid flatfoot, whose symptoms have persisted despite at least six months of nonsurgical treatment.
Both procedures fuse the subtalar joint, a joint below the ankle. One procedure also fuses the talonavicular joint, while the other fuses the naviculocuneiform joint. These joints are located at different points along the inner arch of the foot. Joint fusion joins bones together to improve foot alignment and stability. The procedure is selected according to where the foot's inner arch has collapsed.
The study evaluates changes in foot alignment on standing X-rays, foot and ankle function, physical function, and quality of life. It also compares operating time, bone healing, and complications. Both groups receive the same postoperative care and rehabilitation, with follow-up assessments during recovery and approximately one year after surgery.
The aim is to compare the outcomes of these two surgical approaches when each is selected according to the location of the deformity.
62 studies on the registry are indexed under Foot Deformities; 13 are open to participants now.
This study's enrollment of 53 is below the median of 60 across 28 interventional studies indexed under Foot Deformities.
Browse Foot Deformities studies →Cairo University is the lead sponsor of 4,909 studies on the registry; 1,445 are open to participants now.
Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
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Subtalar and talonavicular arthrodesis
Procedure: Subtalar and talonavicular arthrodesis
subtalar and naviculocuneiform arthrodesis
Procedure: subtalar and naviculocuneiform arthrodesis
Subtalar and talonavicular arthrodesis: Surgical fusion of the subtalar and talonavicular joints to stabilize the hindfoot, correct deformity, and relieve pain.
Subtalar and naviculocuneiform arthrodesis: Surgical fusion of the subtalar and naviculocuneiform joints to stabilize the foot, correct deformity, and relieve pain.
AOFAS
The AOFAS ankle-hindfoot score assesses pain, function, and alignment. Scores range from 0 to 100, with higher scores indicating better outcomes. Change is calculated as the postoperative score minus the preoperative score. Mean changes are compared between the subtalar plus talonavicular arthrodesis group and the subtalar plus naviculocuneiform arthrodesis group.
Time frame: 1 day
Plan to share: Undecided
No publications or documents are linked to this record.
Ran from May 2025 to primary completion in Aug 2026, 15 months.
Of 14 interventional studies with no phase under Foot Deformities, half reached primary completion within 12 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 15. This study's 15 months is above that.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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