Diagnostic Assessment — Right Knee - Prepatellar Bursitis
Example 1 of 1 · fictitious patient (Veteran O)
Diagnostic Assessment
Right Knee - Prepatellar Bursitis
ADF History
The veteran, Rifleman, 11/06/2013, [date withheld]
Occupational History
Infantry training as a Rifleman involves extensive kneeling, crawling, and ground-based tactical exercises that place direct pressure on the prepatellar bursa. Military activities include pack marching, obstacle courses, field exercises, tactical movement under fire, and combat training requiring prolonged contact between the anterior knee and hard surfaces, predisposing to bursal inflammation and infection.
History
The veteran the veteran a Rifleman with the Australian Army, developed infected prepatellar bursitis of the right knee in January 2011 during intensive military training involving extensive kneeling and crawling activities at the base Military Training Area.
Timeline
- 28 December 2007 - Acute presentation to the base Health Centre during week 13 of intensive military training with overnight onset of a red swelling on the front of the right knee. The condition was formally diagnosed as right knee infected prepatella bursitis affecting the superficial bursal structures. Initial presentation noted minimal pain minimal physical restrictions at presentation but required immediate antibiotic intervention.
- 28 December 2007 - Same day assessment confirmed infected prepatellar bursitis requiring systemic antibiotic treatment. Clinical findings showed acute inflammatory changes over the prepatellar region with systemic signs including elevated temperature. Treatment commenced with cephalexin 500 mg capsule with instructions for TWO TO BE TAKEN THREE TIMES A DAY for the infectious component.
- 29 December 2007 - Follow-up assessment demonstrated improvement in acute inflammation but revealed secondary complications. Assessment documented much improved - less red less swollen less pain from the infectious process, however mechanical complications emerged including knee pain during pack marching activities indicating ongoing functional impact on training performance.
- 31 December 2007 - Continued monitoring showed resolution of acute infectious component but persistence of underlying mechanical issues. Assessment documented resolving cellulitis with knee min signs on clinical examination, though ongoing anti-inflammatory medication was required for residual symptoms.
- 04 January 2008 - Final assessment of acute episode confirmed successful resolution of infectious bursitis but documentation of ongoing mechanical symptoms. Medical review noted ongoing low grade pain aggravated yesterday by training establishing pattern of chronic sequelae following the acute infectious episode.
Symptoms
Initial symptoms included acute onset swelling, redness, and localized inflammation over the front of the right knee in the prepatellar location with minimal initial pain but progression to systemic involvement. Following antibiotic treatment, acute inflammation resolved but ongoing low-grade symptoms persisted with training activities, particularly during kneeling and ground-based exercises.
Imaging
No specific imaging required for prepatellar bursitis; diagnosis based on clinical presentation, anatomical location, and response to treatment.
1. What is the formal diagnosis of the condition claimed above?
Right knee prepatellar bursitis history (Z87.2), Knee Bursitis SOP No. 76 of 2018, ICD-10 code M70.4.
Prepatellar bursitis means inflammation or infection of the prepatellar bursa, a fluid-filled sac located between the patella (kneecap) and the overlying subcutaneous tissue. The prepatellar bursa functions to reduce friction between the patella and skin during knee movement. This condition is commonly caused by repetitive kneeling and is colloquially known as "housemaid's knee," "carpet layer's knee," or "clergyman's knee." In military contexts, it frequently results from tactical exercises involving prolonged kneeling, crawling, and ground contact activities. The condition can present as sterile inflammation from mechanical irritation or, as in this case, progress to infected bursitis requiring antibiotic treatment. The infected variant represents bacterial invasion of the bursal space causing acute inflammation with systemic signs.
2. For each diagnosis identified, please also provide the following dates:
When did the veteran first experience symptoms attributable to this condition? 28 December 2007 during intensive military training at the base Military Training Area. [CHART REVIEW.docx]
When did the veteran first present to a health/medical provider for this condition? 28 December 2007 to military medical officer at the base Health Centre for acute onset prepatellar symptoms. [CHART REVIEW.docx]
When was the condition confirmed/formally diagnosed? 28 December 2007 by military medical staff based on clinical presentation and anatomical location of inflammation. [CHART REVIEW.docx]
When did the veteran first present to you (or your practice) for this condition? 28 March 2015
3. How was this diagnosis confirmed? i.e. what were the key symptoms and signs, investigation results, specialist opinions? Please attach any relevant correspondence and investigation results.
The diagnosis was confirmed clinically based on overnight onset of localized swelling and inflammation over the front of the right knee in the characteristic prepatellar location. The anatomical distribution, acute onset during intensive training involving kneeling activities, and progression to systemic involvement confirmed infected prepatellar bursitis. Response to systemic antibiotic treatment supported the infectious diagnosis. [CHART REVIEW.docx]
4. What do you consider to be the cause(s) of the condition in this veteran? Give consideration to constitutional and common risk factors, pre-existing injuries or diseases, and occupational or lifestyle risks, as well as direct causative mechanisms.
Factor 9(2): for prepatellar bursitis or superficial infrapatellar bursitis only, working whilst kneeling, crawling or pressing the anterior knee against a hard vertical surface for a cumulative period of at least 60 hours within the two months before the clinical onset of knee bursitis - MET
- Military training as a Rifleman during the intensive training phase at the base involved extensive kneeling, crawling, and tactical exercises well exceeding 60 hours within two months prior to onset.
Factor 9(4): having trauma to the affected knee bursa in the 30 days before the clinical onset of knee bursitis - MET
- Repetitive trauma to the prepatellar bursa from intensive military training activities including pack marching, obstacle courses, and ground-based tactical exercises in the 30 days leading up to onset.
Factor 9(6): having a bacterial, fungal or algal infection of the affected knee bursa at the time of the clinical onset of knee bursitis - MET
- The condition was specifically diagnosed as infected prepatellar bursitis, meeting this factor requirement exactly.
Factor 9(7): for septic knee bursitis only, being in an immunocompromised state as specified at the time of the clinical onset of knee bursitis - NOT MET
- No evidence of immunocompromised state; the veteran was a healthy 20-year-old during intensive military training.
Sequelae
Not applicable as this represents the primary bursal condition, though it may have contributed to subsequent right knee problems.
Unintended Consequence
No evidence of this condition being an unintended consequence of medical management. The condition resulted from occupational exposure during mandatory military training activities.
Inability to Attain Appropriate Medical Management
No inability to attain appropriate medical management for the acute infected prepatellar bursitis. The condition was promptly diagnosed on 28 December 2007 and appropriately treated with systemic antibiotics (cephalexin 500mg three times daily), resulting in resolution of the acute infectious component as documented in sequential follow-up assessments. Treatment was consistent with standard care for infected prepatellar bursitis.
the % contribution of the causes is 100% and significant
5. Please provide a Health Summary and a medication/prescribing history. -see attached report
