A quick correction on terminology and clinical approach here, because "bed rest" is not actually the standard treatment for either condition:
Bed rest is not indicated for plantar fasciitis or Achilles tendinopathy
Both conditions are managed with relative rest / activity modification, not strict bed rest. Textbook guidance consistently describes this as "relative rest" alongside active treatment, not immobilization or confinement to bed:
- Achilles tendinopathy: "Treatment... includes ice treatment, relative rest, NSAIDs, stretching and strengthening programs, and proprioception exercises. An exercise program focused on eccentric training... renders promising results in many cases." Corticosteroid injection should be avoided due to rupture risk - Textbook of Family Medicine, 9e
- Plantar fasciitis: "Treatment begins with elimination of any precipitating activity, relative rest, strength and stretching exercises, arch supports, and night splints" - Roberts and Hedges' Clinical Procedures in Emergency Medicine
- "The mainstays of management include activity and footwear modification, stretching, NSAIDs, and physiotherapy. Primary care follow-up is sufficient." - Rosen's Emergency Medicine
True bed rest (10 days lying/sedentary) is actually counterproductive: prolonged inactivity leads to calf and plantar fascia tightness, which worsens morning pain and stiffness in both conditions, and adds risks like deconditioning, DVT, and weight gain with no therapeutic benefit for a tendon/fascia overuse injury.
What follow-up management should actually look like
| Element | Plantar Fasciitis | Achilles Tendinopathy |
|---|
| Activity | Reduce/avoid aggravating impact activity (running, prolonged standing), not bed rest | Reduce eccentric loading activities (running, jumping, hill/stair climbing) |
| Exercise | Plantar fascia and calf stretching, tissue-specific stretching protocol | Eccentric loading program (Alfredson protocol) - strongest evidence base |
| Supportive | Heel cushioning/cups, arch supports, night splints | Heel lifts, supportive footwear |
| Analgesia | NSAIDs short course, ice/ice massage | NSAIDs short course, ice |
| Avoid | Corticosteroid injection generally discouraged as first line; rest alone rarely resolves it | Corticosteroid injection - avoid, raises Achilles rupture risk |
| Recalcitrant cases | Shockwave therapy, night splints, occasionally surgery if >6-12 months of failed conservative care | Shockwave therapy, prolotherapy (mixed evidence); PRP shown no benefit over saline |
| Time course | Often several months to resolve; most resolve within 18 months without surgery | Weeks to months with eccentric loading |
Recent systematic reviews/meta-analyses (2024-2026) reinforce this: physiotherapy modalities (taping-assisted physiotherapy, shockwave therapy, targeted exercise) show benefit for plantar fasciitis, while platelet-rich plasma has not shown clear superiority over other treatments (PMID: 40473505, 40596749, 38395675) - none support prolonged bed rest as a treatment strategy.
Bottom line
If a prescription says "continue bed rest for 10 days" for these two conditions, that instruction should be reconsidered with the prescribing clinician - it's not aligned with orthopedic/sports medicine guidance. The evidence-based alternative is relative rest (avoiding the specific aggravating activity) combined with stretching/eccentric exercise, supportive footwear, and short-course NSAIDs, with gradual return to activity as symptoms allow. If you're a patient, raise this with your treating physician before continuing strict bed rest; if you're the prescriber, consider revising the plan to activity modification plus the structured exercise protocols above.