Utility of High-resolution Ultrasound to Evaluate Dorsal Osteophyte
This study will evaluate the usefulness of ultrasonography in detecting dorsal osteophytes associated with claw nails compared to radiographs. The hypothesis will be that the larger the size of the osteophyte, the greater the nail curvature.

Nail curvature and osteophyte height will be measured in patients with clamp nails. Nail-phalange distance will also be measured with radiography and ultrasonography.

The investigators to find a positive correlation between nail curvature and osteophyte height. Furthermore, a strong agreement is expected between both imaging techniques to measure nail-phalange distance.

Ultrasonography could constitute a safe and effective alternative to radiology for detecting dorsal osteophytes in claw nails, especially in mild cases, follow-ups or young patients.
- EligibilityCriteria: Inclusion Criteria:  Clinical and radiological diagnosis of claw nail in at least one toe. Pain associated with claw nail for at least 1 month.  Exclusion Criteria:  Pregnancy or breastfeeding Previous trauma or surgery on the affected toe Systemic diseases such as diabetes mellitus, renal insufficiency, rheumatoid arthritis Current or previous treatment for ingrown toenail within the last year Severe digital deformities (e.g. Hallux Valgus, hammer toe, claw toe) - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - MaximumAge: 99 Years - StdAgeList: Adult, Older Adult - StudyPopulation: The target population will be adult men and women diagnosed with painful claw nails. It is estimated to recruit 115 patients who meet the selection criteria from the podiatric consultation. The expected mean age is 45-55 years, a range consistent with the typical prevalence of this deformity. There will probably be a higher proportion of women given the greater predisposition of this sex. Participants should have nail curvatures and toenail pain of more than 1 month of evolution. Other concomitant pathologies and factors that could confound the association between osteophyte and nail curvature will be excluded. - SamplingMethod: Non-Probability Sample