luxating patella

Applicable clinical context

Record species and laterality before interpreting severity or importing clinical guidance.

1. Which species, individual and side does this luxating-patella assessment concern? definition
2. If both sides are affected, what evidence and assessment belong to each side? boundary

Documented patellar displacement

Patellar dislocation concerns the kneecap moving out of its groove; the record should distinguish this event from broader patellar instability. [AAOS: Unstable Kneecap](https://www.orthoinfo.org/en/diseases--conditions/unstable-kneecap)

1. Was complete luxation demonstrated, or does the evidence establish only subluxation, maltracking or suspected instability? boundary
2. Who documented the displacement, when, and through examination, imaging or an earlier clinical record? provenance

Observed displacement pattern

Record direction and patellar position together with knee angle, loading and whether displacement was spontaneous or elicited by a clinician.

1. In which direction does the patella displace, and under what joint position or activity was this observed? measurement
2. Was the patella seated or displaced at this examination, and how does that compare with documented episodes? measurement

Supported mechanical classification

Veterinary assessment uses grades reflecting displacement and reducibility; retain the underlying observations and the named system. [ACVS: Patellar Luxation](https://www.acvs.org/small-animal/patellar-luxations/)

1. Does the patella return spontaneously, require clinician reduction, immediately reluxate or remain non-reducible? measurement
2. Which grading system was used, and which recorded observations justify the assigned grade? provenance
3. Were pain, guarding, sedation or examination position documented as limitations on interpretation? measurement

Supported contributing anatomy

Trochlear shape and limb alignment may contribute to veterinary patellar luxation; record demonstrated abnormalities rather than assuming a mechanism from breed or grade. [ACVS: Patellar Luxation](https://www.acvs.org/small-animal/patellar-luxations/)

1. Which trochlear, femoral, tibial or soft-tissue abnormalities have been demonstrated, and by which assessment? provenance
2. What evidence supports developmental, traumatic or unresolved onset in this individual? provenance

Attribution of joint dysfunction

Require explicit attribution of symptoms when luxation coexists with other joint abnormalities.

1. Which findings support luxation as the source of current dysfunction, and which suggest a concurrent injury or disease? boundary
2. What unresolved diagnostic question would additional examination or imaging answer? action

Attributable functional burden

Dogs may show intermittent skipping or temporary limb lifting; record observed function and pain separately from anatomical grade. [ACVS: Patellar Luxation](https://www.acvs.org/small-animal/patellar-luxations/)

1. What pain, weight-bearing change or activity limitation occurs during episodes and between them? measurement
2. Which observations come from a clinician, caregiver or patient, and what scale or observation period was used? provenance

Longitudinal luxation pattern

Maintain dated episodes and assessments so changes in displacement, pain and function can be evaluated independently.

1. When was displacement first documented, and how frequent and long-lasting are subsequent episodes? measurement
2. Has persistence, reducibility or functional impairment changed under comparable assessment conditions? measurement

Individualised care decision

Record observation, conservative care or surgical assessment as a clinician-directed decision grounded in symptoms, mechanics and individual context.

1. What management pathway was selected, by whom, and which functional and mechanical findings support it? action
2. Which new findings should trigger earlier reassessment or referral under the individual's care plan? action

Documented treatment response

Track patellar position, recurrent luxation, pain and function as distinct outcomes with baseline and follow-up dates.

1. Compared with baseline, what changed in patellar stability, episode frequency, pain and limb use? measurement
2. Does the follow-up evidence indicate persistent luxation, recurrence after documented stability or another cause of impairment? boundary
3. What reassessment or care-plan revision did the responsible clinician recommend? action

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of luxating patella this model covers, and on what evidence? provenance

Kinds and varieties

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these kinds and varieties hold for the sense of luxating patella this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of luxating patella this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these typical measurements hold for the sense of luxating patella this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these failure modes and hazards hold for the sense of luxating patella this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of luxating patella this model covers, and on what evidence? provenance