Medial patellar luxation (MPL) — the most common form of patellar luxation in dogs — is a developmental condition predominantly affecting small and toy breeds, where the kneecap slips out of the trochlear groove toward the medial aspect of the joint. Clinical presentation ranges from occasional “skipping” during exercise in grade 1 cases to persistent, non-weight-bearing lameness in grade 4. Surgery is recommended for symptomatic dogs with grade 2, 3, or 4 MPL. Published success rates for MPL correction are high — approximately 90–95% of pets achieve good knee function — but reported complication rates range from 11 to 43% depending on the fixation technique used, with tibial tuberosity transposition fixation studies reporting variable outcomes. Follow-up that enforces strict activity restriction during the 6–8 week healing period and catches complications early is the mechanism that achieves those 90% outcomes consistently.
Why MPL follow-up centres on activity restriction and complication detection
MPL correction surgery involves one or more of: trochleoplasty (deepening the femoral groove), tibial tuberosity transposition (realigning the quadriceps mechanism), lateral imbrication, and medial desmotomy. The specific combination depends on the grade and anatomical features of the individual case. What all of these share is a 6–8 week healing period during which strict activity restriction is essential — no running, jumping, climbing stairs, or rough play. During this period, the bone and soft tissue are consolidating, and any excessive mechanical load risks implant loosening, tibial tuberosity fracture, or re-luxation.
Research comparing post-operative rehabilitation approaches for MPL found that home exercises performed consistently and correctly produced similar recovery outcomes to veterinarian-supervised physiotherapy. The key phrase is “consistently and correctly” — which requires follow-up to verify. Dogs recovering from MPL surgery that feel well enough to move normally by week 2 or 3 are at the highest risk of activity compliance failure, because the owner interprets the dog’s eagerness as evidence of full recovery.
Cruciate ligament disease is an important concurrent consideration. Patellar luxation and CCL disease have an anatomical association in dogs — the tibial torsion that contributes to MPL also increases CCL loading. In dogs with bilateral disease or other orthopedic issues, the follow-up assessment should include gait observation for any signs of CCL involvement that may have been masked by the MPL.
The MPL follow-up timeline
| Timepoint | What to check | Red flags |
|---|---|---|
| 48–72 hours | Pain management effective, incision appearance, e-collar in place, strict rest enforced (crate or pen), eating and drinking | Signs of severe pain uncontrolled by medication — contact surgeon; incision compromised |
| Day 10–14 | Suture removal recheck, incision healing, beginning of short controlled leash walks as per surgeon’s protocol, e-collar still in place | Incision dehiscence or infection — return for review; re-luxation of patella noted — urgent surgical assessment |
| Week 4 | Controlled leash walk progression assessed, range of motion improving, no lameness worsening, physiotherapy exercises if prescribed | Sudden worsening of lameness — tibial tuberosity fracture or implant failure; owner has allowed free activity |
| Week 8 | Clinical assessment, radiographs if indicated, full activity clearance discussion | Patella still luxating on examination — surgical revision may be needed; owner reports dog has been running normally since week 3 (compliance failure) |
What to ask owners during MPL follow-up
- Is [dog name] bearing weight on the operated leg — and is there improvement compared to the day of discharge?
- Have you been keeping [dog name] strictly confined — in a crate or pen — with no running, jumping, or stairs?
- How long are you taking her out on the lead, and is the walk speed slow and controlled?
- Have you noticed any swelling, heat, or discharge at the incision site?
- Is the e-collar staying in place?
- Has [dog name] had any episodes where the leg suddenly gave way, or she started hopping on three legs again?
- Are you doing the prescribed physiotherapy exercises — and are you confident in the technique?
- Has [dog name] had any off-lead time or free running since the surgery?
- Is she eating and maintaining her weight?
- Do you have your radiograph appointment booked at week 8 if required?
Common MPL follow-up mistakes clinics make
Not specifying what “strict rest” means for a small breed dog. Small dogs are often perceived by their owners as fragile and unlikely to overdo it — but a toy poodle bouncing up to greet visitors at the door or jumping off a sofa exerts significant stifle load. A follow-up call that asks specifically about greetings behaviour, furniture access, and any stair use catches the activity compliance gaps that owners don’t register as “exercise.”
Not warning about the re-luxation risk during recovery. If the patella re-luxates during the healing period — often signalled by sudden return of the three-legged hop — this is a surgical concern that needs prompt assessment, not watchful waiting. A follow-up call that asks “has she had any episodes of suddenly hopping on three legs?” and explains that this warrants urgent contact ensures the owner acts quickly if re-luxation occurs.
Missing CCL disease in the recovery assessment. Dogs recovering from MPL surgery whose lameness fails to fully resolve at the expected timeline — or who develop a new character of lameness — may have concurrent CCL pathology that was not identified pre-operatively. A follow-up call that asks about the pattern of lameness recovery flags cases that need re-examination rather than just more time.
How to automate MPL follow-up without adding to your team’s workload
Nidana Loop schedules a 48-hour and 72-hour post-surgical check call and a day 10–14 suture removal reminder for MPL cases. The 4-week call specifically asks about activity compliance, patella re-luxation episodes, and physiotherapy adherence. The 8-week call schedules radiograph confirmation. The clinic sees summaries and urgent flags for any case where re-luxation, infection, or implant failure signs are reported.
See how Loop handles luxating patella follow-up calls → Book a 20-minute demo
Related: TPLO recovery follow-up · Hip dysplasia management follow-up · Fracture repair aftercare