Extra needling added nothing to tendon rehab

Patellar tendinopathy — pain at the tendon below the kneecap — is stubborn, and the mainstay of treatment is loading the tendon with eccentric exercise, often combined with percutaneous needle electrolysis. Clinics increasingly stack additional needle-based techniques on top, on the reasoning that more input should mean faster relief. Percutaneous neuromodulation, which applies current near a nerve under ultrasound guidance, is one such add-on that has been promoted as complementary but not previously tested in this condition. The practical question is whether the extra procedure earns its place, or whether the existing combination is already doing the work.

This was a single-blinded randomised clinical trial with 26 participants with patellar tendinopathy, allocated either to an active control group receiving eccentric exercise plus percutaneous needle electrolysis, or to an experimental group receiving those plus ultrasound-guided percutaneous neuromodulation. The needle-based interventions were delivered on days 1, 7 and 14, while the eccentric exercise was performed twice daily for four weeks. Pain intensity was recorded on a visual analogue scale at days 1, 7, 14 and 21 and modelled with a linear mixed-effects approach. Function and quality of life were captured with VISA-P, SF-36, a pistol squat test and ultrasound imaging at days 1 and 21.

Pain intensity dropped significantly over time in both groups, with the improvement highly statistically significant within the trial as a whole. However, there was no difference between the groups in pain and no group-by-time interaction, meaning the neuromodulation arm did not improve faster or further. None of the secondary outcomes separated the groups either: VISA-P, SF-36 quality of life, functional capacity on the pistol squat and every ultrasound imaging variable all showed non-significant between-group differences. In short, the null result was consistent across pain, function, quality of life and tendon imaging.

The finding supports the existing evidence base for eccentric exercise combined with needle electrolysis, since both arms improved markedly, while offering no support for layering neuromodulation on top in the short term. It is the first test of this specific add-on in patellar tendinopathy, so it fills a genuine gap rather than contradicting prior trials. With 26 participants the study cannot rule out a small benefit, and the 21-day horizon says nothing about recurrence or longer-term tendon remodelling. Larger samples and longer follow-up are the obvious next step the authors themselves call for.

This is a reason to think that, for tendon pain, the loading programme and established treatment do the heavy lifting, and that stacking an additional needle technique on top may not add measurable value in the first three weeks. Both groups got better, which is the encouraging part of the story. It does not mean neuromodulation is useless in other settings, only that it did not outperform an already active comparator here. For anyone weighing up an add-on procedure, the honest summary is that the evidence for extra benefit is currently absent rather than established.