Can Lymphatic Transport Impaired by Total Knee Arthroplasty be Managed with Manual Lymphatic Drainage?

After knee replacement surgery, wear particles from the prosthesis are thought to affect the lymphatic system, and this small trial asked whether manual lymphatic drainage, added to standard postoperative exercise, could help with pain, swelling, and a blood marker called LDH linked to muscle damage. Twenty-four patients were randomly split into a group receiving exercise alone and a group receiving exercise plus manual lymphatic drainage for the first three days after surgery, with assessments at day three and six weeks. LDH fell in the drainage group over the early days while it rose with exercise alone in the control group, and pain threshold improved in the drainage group from day two onward. Leg swelling decreased over time in both groups with no difference between them, so the technique did not show an added benefit for edema.

With only twelve patients per group, these are preliminary findings that need confirmation in larger trials.

If you have had or are considering a knee replacement, you may know that swelling, pain, and stiffness are common in the early recovery period. Some researchers believe that tiny particles released from the new joint over time might also affect your lymphatic system, the network that helps drain fluid from your tissues.

This study looked at whether a gentle massage technique called manual lymphatic drainage, given alongside regular postoperative exercise, could help. In this small trial of 24 people, those who received the massage technique in the first three days after surgery had lower levels of a blood marker linked to muscle damage, and their pain threshold (how much pressure they could tolerate before feeling pain) improved starting from the second day. However, leg swelling decreased similarly in both groups, so the massage technique did not appear to make a detectable difference for swelling specifically.

Because this trial included only a small number of people, these results should be seen as early findings rather than firm conclusions.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This trial addresses whether manual lymphatic drainage adds measurable benefit when layered onto standard postoperative exercise therapy after total knee arthroplasty, particularly regarding pain, swelling, and a laboratory marker of muscle damage (LDH). Twenty-four patients were randomised to exercise alone or exercise plus manual lymphatic drainage given over the first three postoperative days, with outcomes assessed at day three and six weeks. The drainage group showed a significant within-group reduction in LDH over the early postoperative days, while the control group showed a significant rise with exercise on days one and two, and pain threshold increased significantly in the drainage group from day two.

These findings suggest manual lymphatic drainage may influence markers associated with muscle damage and pressure pain sensitivity in the acute phase, though the abstract does not report direct between-group statistical comparisons for these outcomes, so caution is needed before attributing superiority. Importantly, leg volume reduction did not differ between groups at any timepoint, indicating no detected edema benefit from the drainage technique specifically.

With only twelve patients per arm, this is a small trial, and the findings should be regarded as preliminary; the abstract does not report adverse events, and the attention from additional manual therapy sessions in the drainage group cannot be ruled out as a contributing factor.