Is proprioception diminished in patients with patellar tendinopathy?

Area of Science:

• Sports Medicine
• Biomechanics
• Kinesiology

Background:

• Patellar tendinopathy is a common overuse injury in athletes.
• Current treatments offer limited effectiveness, potentially due to altered proprioception.
• Previous research indicated proprioceptive deficits in other athletic injuries.

Purpose of the Study:

• To investigate proprioception differences in recreational athletes with patellar tendinopathy.
• To compare the threshold to detect passive motion (TTDPM) between affected and healthy knees.
• To assess TTDPM in athletes with patellar tendinopathy against healthy controls.

Main Methods:

• Proprioception measured using TTDPM in 22 athletes with patellar tendinopathy and 22 healthy controls.
• A validated instrument was used to determine the degree of knee flexion/extension detected by participants.
• 80 measurements per athlete were conducted, considering leg, movement direction, and starting angles.

Main Results:

• No significant difference in TTDPM was found between the patellar tendinopathy group and the healthy control group.
• A statistically significant, albeit small, difference in TTDPM (0.02° higher) was noted in the injured knee compared to the non-injured knee within the affected group.
• The clinical significance of this minor TTDPM difference remains uncertain.

Conclusions:

• Proprioception, as measured by TTDPM, does not significantly differ between recreational athletes with patellar tendinopathy and healthy athletes.
• A slight difference in TTDPM exists between the injured and unaffected knee in athletes with patellar tendinopathy.
• Further research is needed to determine the clinical relevance of subtle TTDPM variations in patellar tendinopathy.