Frequency-Dependent Effects of Percutaneous Femoral Nerve Stimulation on Quadriceps Strength in Athletes With Patellar Tendinopathy

Exclusion Criteria

• •Previous knee surgery or traumatic knee injury within the past 12 months.
• •Complete or partial patellar tendon rupture.
• •Neurological disorders affecting lower limb strength or motor control.
• •Contraindications to electrical stimulation, including implanted electrical devices (e.g., pacemaker).
• •Current lower-limb radiculopathy or neuropathy.
• •Skin infections, open wounds, or dermatological conditions at the stimulation site.
• •Use of analgesics, anti-inflammatories, or corticosteroid injections within the past 48 hours.
• •Participation in another interventional study in the previous 30 days.
• •Pregnancy or suspected pregnancy.