Diagnostic Assessment — Right Jaw - Fracture
Example 1 of 1 · fictitious patient (Veteran R)
Diagnostic Assessment
Right Jaw - Fracture
Balance of Probabilities: Fracture No. 63 of 2024, Osteoarthritis No. 62 of 2017 Reasonable Hypothesis: Fracture No. 64 of 2024, Osteoarthritis No. 61 of 2017
ADF History
The veteran, Aircraft Mechanical - AB, 30 October 1981, 09 Apr 1986.
Occupational History
Aircraft mechanics in the Royal Australian Navy are exposed to various occupational hazards including vibration from tools and equipment, awkward working positions in confined spaces, manual handling of heavy components, exposure to chemicals and solvents, and potential trauma from moving aircraft parts and machinery. The role requires working in cramped conditions which can place stress on joints and musculoskeletal structures.
History
The veteran an Aircraft Mechanical in the Royal Australian Navy, sustained multiple facial fractures in a motor vehicle accident on 14 Jun 1983 while travelling to work from St George to Nowa when he hit a puddle of water and crashed into a tree.
Timeline
- 14 Jun 1983: Motor vehicle accident occurred while travelling to work. fractured his orbit, zygoma and mandible with extensive facial trauma requiring immediate hospitalisation and emergency surgical intervention.
- 31 December 1983: Major reconstructive surgery performed at a private hospital involving exploration of the right temporomandibular joint through temporo-facial incision, osteotomy of the condylar neck, and temporalis muscle transfer arthroplasty with intermaxillary fixation applied.
- February 1987: Follow-up surgery for removal of intermaxillary fixation wires under local anaesthetic with restoration of normal occlusion after extended period of jaw immobilisation.
- November 1987: Condition documented as permanent and stable with ongoing severe Temporomandibular Joint dysfunction and inability to chew normally on the right side.
- July 2018: Recent imaging studies confirmed old healed fracture of the right mandibular condyle with secondary osteoarthritic changes, subchondral sclerosis and osteophyte formation consistent with post-traumatic degenerative joint disease.
Symptoms
At the time of injury, the veteran experienced severe facial pain, swelling, bleeding, and inability to close his mouth properly due to multiple fractures involving the orbit, zygoma and mandible. Post-injury symptoms included severe temporomandibular joint dysfunction with inability to chew on the right side, numbness of the bottom lip with drooling, dysarthric speech due to reduced mouth opening, significant weight loss of 19kg, frequent nosebleeds, and recurring migraines. Currently, he continues to experience severe TMJ dysfunction with abnormal movement patterns, sensation of dislocation during chewing, persistent numbness and tingling of the lower lip, altered bite pattern, speech difficulties, and ongoing functional limitations affecting eating and daily activities.
Imaging
July 2018: MRI temporomandibular joints revealed impression of old healed fracture of the right mandibular condylewith subchondral sclerosis and early osteoarthritic changes, small bony anterior osteophyte, and degenerative changes of the right TMJ disc with atrophy of the muscles of mastication.
July 2018: Ultrasound bilateral jaw showed minimal suppression noted at the open right TMJ with maintained capsule and large suppression noted within the left TMJ with poor capsule definition suggesting chronic subluxation.
1. What is the formal diagnosis of the condition claimed above?
Right Jaw Fracture - SOP Code: Fracture No. 63 of 2024, ICD-10 Code: S02.6
Fracture represents an acquired break of bone as a result of applied force that would ordinarily cause bone breakage in healthy bone. In this case, the fracture involved the mandibular condyle following significant trauma. The condition encompasses the acute injury and subsequent complications including malunion and altered joint mechanics.
Right Jaw Osteoarthritis - SOP Code: Osteoarthritis No. 62 of 2017, ICD-10 Code: M19.0
Osteoarthritis is a degenerative joint disease involving loss of articular cartilage and associated changes to underlying bone and joint margins, resulting from mechanical joint stress. It manifests as pain, stiffness and loss of function in the affected joint with characteristic imaging findings of osteophyte formation and subchondral sclerosis.
The temporal relationship demonstrates that the osteoarthritis developed as a direct sequela of the original traumatic fracture, with the fracture occurring in 1989 and osteoarthritic changes becoming established over subsequent years due to altered joint mechanics and post-traumatic degeneration.
2. For each diagnosis identified, please also provide the following dates:
When did the veteran first experience symptoms attributable to this condition?
Right Jaw Fracture: The veteran first experienced symptoms on 14 Jun 1983 at the time of the motor vehicle accident [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, multiple pages].
Right Jaw Osteoarthritis: Symptoms of osteoarthritic changes began immediately following the fracture on 14 Jun 1983, with progressive deterioration over time [DVA - Consult Notes - DRT - Jaw - Osteoarthritis (N002).pdf, page 1].
When did the veteran first present to a health / medical provider for this condition?
Right Jaw Fracture: The veteran first presented for emergency medical care on 14 Jun 1983 immediately following the motor vehicle accident [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, surgical records].
Right Jaw Osteoarthritis: Initial presentation was concurrent with the fracture on 14 Jun 1983, with formal diagnosis of osteoarthritic changes confirmed on 02 Jun 2015 [DVA - Consult Notes - DRT - Jaw - Osteoarthritis (N002).pdf, page 2].
When was the condition confirmed / formally diagnosed?
Right Jaw Fracture: The fracture was confirmed and formally diagnosed on 14 Jun 1983 through clinical examination and imaging studies by hospital medical officers [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, medical records].
Right Jaw Osteoarthritis: The condition was formally diagnosed on 02 Jun 2015 based on MRI findings showing degenerative changes by the treating doctor, Radiologist [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, imaging reports].
When did the veteran first present to you (or your practice) for this condition?
05 January 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.
Right Jaw Fracture: The diagnosis was confirmed through clinical examination revealing facial deformity, malocclusion, and functional impairment, supported by imaging studies demonstrating fractures of the mandibular condyle, zygoma and orbit. Surgical exploration confirmed the extent of bony injury requiring complex reconstruction [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, surgical reports].
Right Jaw Osteoarthritis: The diagnosis was confirmed through MRI imaging in July 2018 demonstrating characteristic features of post-traumatic osteoarthritis including subchondral sclerosis, osteophyte formation, and degenerative disc changes, correlated with clinical symptoms of joint dysfunction and pain [CIA1 - the veteran the veteran - COMBINED - COMPLETE.pdf, imaging reports].
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.
Right Jaw Fracture - Balance of Probabilities Factors:
Having significant physical force applied to or through the affected bone at the time of clinical onset - MET
- The motor vehicle accident on 14 Jun 1983 involved significant physical force when the veteran hit a puddle of water and crashed into a tree, resulting in multiple facial fractures including the mandibular condyle.
Right Jaw Osteoarthritis - Balance of Probabilities Factors:
Having trauma to the affected joint within the 25 years before the clinical onset of osteoarthritis in that joint - MET
- The traumatic fracture of the mandibular condyle occurred on 14 Jun 1983, well within the 25-year timeframe before clinical onset of osteoarthritic symptoms.
Having an intra-articular fracture of the affected joint before the clinical onset of osteoarthritis in that joint - MET
- The fracture involved the mandibular condyle which forms part of the temporomandibular joint articular surface, constituting an intra-articular fracture.
Sequelae
The osteoarthritis of the right jaw represents a direct sequela of the original traumatic fracture. The altered joint mechanics and damage to articular surfaces following the 1989 fracture led to progressive degenerative changes resulting in secondary osteoarthritis.
Unintended Consequence
The condition is not considered an unintended consequence of medical management. The surgical interventions were appropriate and necessary for management of the complex facial fractures.
Inability to Attain Appropriate Medical Management
This factor is NOT MET. The veteran received appropriate and extensive medical management including emergency treatment, complex reconstructive surgery, and ongoing specialist care. The surgical management was appropriate for the standards of the time and involved highly specialized procedures including temporomandibular joint reconstruction and intermaxillary fixation.
The % contribution of the causes is 100% and significant.
5. Please provide a Health Summary and a medication / prescribing history.
- See attached report
