Platelet-Rich Plasma (PRP) Injections in Recalcitrant Athletic Pubalgia and Groin Pain
In short
Detailed clinical guide to Platelet-Rich Plasma (PRP) therapy in recalcitrant groin pain, from ultrasound-guided pubic delivery to phased rehabilitation milestones.
In this guide (4 sections)
For competitive athletes and highly active individuals with chronic adductor longus enthesopathy or athletic pubalgia who have failed three to six months of structured conservative physiotherapy, biological therapies represent an intermediate option before considering invasive surgical tenotomy or mesh repair. Platelet-Rich Plasma (PRP) has emerged as the leading biological intervention, utilizing an autologous concentration of human platelets suspended in small volumes of plasma. Platelets contain alpha granules packed with essential biological growth factors, including platelet-derived growth factor (PDGF), transforming growth factor-beta (TGF-beta), and basic fibroblast growth factor (bFGF). When injected directly into degenerated fibrocartilaginous tissue under ultrasound guidance, PRP aims to stimulate cellular regeneration, accelerate collagen deposition, and resolve recalcitrant recalcitrant insertional micro-tears.
Navigating Elite and Recreational Athletic Expectations in Indian Sports
In Indian sports culture, the pressure on athletes to return quickly to competitive play is immense. Whether playing in the Pro Kabaddi League, the Indian Super League, regional Ranji Trophy cricket trials, or local university tournaments, athletes often view biological injections as a potential fast-track cure. However, managing clinical expectations is vital. Athletes and treating clinicians must recognize that PRP is not an immediate analgesic injection like a local anesthetic or corticosteroid. In fact, corticosteroid injections into the adductor enthesis are strongly discouraged due to documented risks of tendon rupture, subchondral bone necrosis, and accelerated aponeurotic tearing. PRP requires weeks of biological cellular remodeling supported by a strictly phased post-injection rehabilitation protocol to convert cellular signals into functional load-bearing capacity.
Biological Cascades: Alpha Granule Release, Angiogenesis, and Tenocyte Proliferation
The biological mechanism of PRP centers on kickstarting a controlled reparative response within an avascular, degenerative tissue bed. In chronic adductor enthesopathy, the tendon insertion is characterized by hypoxic degeneration, mucoid ground substance accumulation, and an absence of active inflammatory cells capable of driving repair. Upon injection, platelets undergo degranulation within minutes, releasing high concentrations of PDGF, vascular endothelial growth factor (VEGF), and epidermal growth factor (EGF). PDGF recruits undifferentiated mesenchymal stem cells and circulating tenocytes to the injury zone, while VEGF stimulates organized endothelial capillary proliferation. In vitro and clinical studies show that leukocyte-poor PRP (LP-PRP) is preferred for tendon tissue, as high neutrophil concentrations can induce excessive pro-inflammatory matrix metalloproteinases that degrade existing collagen architecture.
Post-Injection Rehabilitation Protocol: From Cellular Protection to Graded Holmich Loading
The ultimate clinical success of a PRP injection depends heavily on the post-procedure physiotherapy protocol. The initial forty-eight to seventy-two hours represent an acute inflammatory phase; patients are placed on relative rest, avoid non-steroidal anti-inflammatory drugs (NSAIDs) that blunt platelet activation, and use paracetamol or ice for discomfort. Weeks one and two focus on gentle active-assisted range of motion, isometric core bracing, and protected walking. Weeks three and four introduce submaximal isometric adductor ball squeezes at forty-five degrees and bilateral pelvic bridging. Weeks five through eight advance to the full Holmich active strengthening protocol, incorporating eccentric sliding lunges, Copenhagen level-one side planks, and resistance band adduction. Return to full sports participation is permitted only when dynamic squeeze testing and agility benchmarks are passed pain-free at weeks ten to twelve.
Gentle Post-PRP Active Range of Motion: Seated Heel Slides with Knee Abduction Control
Objective: Maintain hip joint mobility and encourage cellular fluid exchange without placing tensile stress on the injected enthesis
- 1Begin this gentle exercise on day five following your ultrasound-guided PRP injection, after resting for the initial 96 hours.
- 2Sit upright on a smooth chair with your feet resting flat on a smooth tiled or wooden floor with socks on your feet.
- 3Gently slide one foot forward until your knee is almost straight, keeping your thigh aligned in neutral without letting it fall outward.
- 4Slowly draw the heel back toward your chair, keeping the foot flat on the floor and moving purely through a comfortable, pain-free range of motion.
- 5Perform the motion smoothly and rhythmically, avoiding any sudden stops, jerky movements, or aggressive inner thigh stretching.
| Post-Injection Phase | Clinical Focus and Permitted Activities | Exercise Restrictions and Contraindications |
|---|---|---|
| Phase 1: Days 1 to 4 | Relative rest, protected walking, ice for pain control, paracetamol if needed | No NSAIDs (ibuprofen, naproxen); no resisted adduction; no passive groin stretching |
| Phase 2: Weeks 1 to 2 | Active hip range of motion, pelvic tilts, transverse abdominal drawing-in, gentle stationary cycling | No explosive loading; avoid wide-base squats, running, or high-effort isometric squeezes |
| Phase 3: Weeks 3 to 6 | Progressive isometric adductor ball squeezes (45 & 90 deg), glute bridges, seated adductor work | Pain must remain below 2/10 during testing; no aggressive eccentric lunges or cutting |
| Phase 4: Weeks 7 to 12 | Full Holmich active protocol, Level 1 & 2 Copenhagen drills, linear jogging, cutting drills | Return to full competitive sport cleared only after pain-free maximal squeeze test at 0 degrees |
Platelet-Rich Plasma injections for adductor longus enthesopathy or athletic pubalgia must always be performed under high-resolution musculoskeletal ultrasound guidance by an experienced sports medicine physician or interventional radiologist. Blind landmark-based injections carry unacceptably high risks of placing biological fluid into the femoral vein, obturator nerve, or directly into the pubic bone marrow, potentially causing severe neurovascular complications or pubic osteomyelitis.
Frequently Asked Questions
Why am I told not to take painkillers like Brufen or Voveran after a PRP injection?
Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Brufen) or diclofenac (Voveran) block the cyclooxygenase enzyme pathway, which inhibits platelet function and suppresses the natural inflammatory cascade necessary for PRP to work. Taking these medications during the first two weeks blunts the biological healing signal. If pain relief is required, paracetamol is recommended as it does not interfere with platelet activation.
Do I need a doctor referral to treat groin pain and sports hernia on BookPhysio.in?
BookPhysio.in does not require a doctor referral. Under the National Commission for Allied and Healthcare Professions (NCAHP) Act 2021, patients across India enjoy direct access to autonomous registered physiotherapists. Through BookPhysio.in, you connect directly with verified clinicians and pay per session with transparent fees, completely free from advance package commitments, commission markups, or platform subscription charges.
Related condition guides
Related recovery guides & articles
BookPhysio.in Editorial Team
The BookPhysio.in editorial team writes and maintains this content, checking it against reliable clinical sources. Content follows our medical review policy: general information only, and no page claims a clinical review until a named registered physiotherapist has signed it off.
Read our medical review policy