This document describes a case of Kienböck's disease in a 37-year-old male bricklayer with 25 years of experience. Clinical examination revealed pain and limited mobility in his right wrist. X-rays showed changes in bone density of the lunate bone. He was diagnosed with stage IIIB Kienböck's disease based on MRI findings and placed on a waiting list for total wrist arthrodesis surgery. The document discusses Kienböck's disease, risk factors like vibration exposure, stages of the disease, treatments, and impact on occupational disability.
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Jornada técnica
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Sesión clínica de medicina del trabajo sobre el tema de la discopatía en el personal expuesto a cargas por delantal plomado. La sesión clínica estimula plantea dudas sobre la asociación exposición a carga por delantal con la discopatia típica lumbar y meno tipica como la dorsal/cervical; también pone en discusión la contingencia laboral del proceso incapacitante y propone nuevas medidas de prevención y protocolo especifico en vigilancia de la salud para el personal expuesto
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Se analizan las técnicas más habituales de simulación médica y también las estrategías para detectar una actitud simuladora.
Sesión Clínica presentada en el Unidad Médica de Valoración de Incapacidades de Huelva (Inspección médica).
Caracterización de los accidentes biológicos en un hospital comarcal de 1995 ...Benedetto Gesmundo
OBJETIVOS: Caracterizar los accidentes biológicos que ocurrieron en el entorno sanitario del Hospital Comarcal Infanta Elena de Huelva en el periodo 1995-2013. Verificar si la disminución de la tasa de siniestralidad laboral coincide con la aplicación de normas y dispositivos de seguridad. Conocer las variaciones en el formato del registro durante el periodo de estudio.
MÉTODOS: Estudio observacional descriptivo de una cohorte histórica compuesta por personal expuesto a riesgo biológico que notificó un accidente entre los años 1995 y 2013. Construcción de indicadores homogéneos para establecer comparaciones entre los diferentes servicios, analizando los datos mediante estadística descriptiva y bivariante.
RESULTADOS: En este período de tiempo se registraron 959 casos. La tasa de exposición accidental por cada 100 trabajadores fue de 5,6 y de 15,9 / 100 camas año. Tuvo lugar una disminución del riesgo de accidentabilidad en los años sucesivos a la aplicación de las normativas de prevención y a la implantación de dispositivos de bioseguridad. El estamento más afectado fue el personal de enfermería; en el área quirúrgica se produjo un mayor número de accidentes. La exposición tipo fue aquella producida recogiendo material usado y con inoculación accidental de fluido sanguíneo con aguja de pequeño calibre en las manos.
CONCLUSIONES: Aunque la tasa de riesgo ha tenido una evidente reducción, sigue manteniendo cifras elevadas. Factores como leyes especificas y dispositivos de seguridad influyen considerablemente en la disminución de la accidentabilidad; también hay que promover la formación del trabajador, prestando particular atención al personal de nueva incorporación. Hay que fomentar, además, el desarrollo de protocolos específicos para controlar los pasos más peligrosos en cada tarea.
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Enfermedad de kienbock, un caso clínico de trastorno por trauma acumulativoBenedetto Gesmundo
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Overall life span (LS) was 1671.7±1721.6 days and cumulative 5YS reached 62.4%, 10 years – 50.4%, 20 years – 44.6%. 94 LCP lived more than 5 years without cancer (LS=2958.6±1723.6 days), 22 – more than 10 years (LS=5571±1841.8 days). 67 LCP died because of LC (LS=471.9±344 days). AT significantly improved 5YS (68% vs. 53.7%) (P=0.028 by log-rank test). Cox modeling displayed that 5YS of LCP significantly depended on: N0-N12, T3-4, blood cell circuit, cell ratio factors (ratio between cancer cells-CC and blood cells subpopulations), LC cell dynamics, recalcification time, heparin tolerance, prothrombin index, protein, AT, procedure type (P=0.000-0.031). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and N0-12 (rank=1), thrombocytes/CC (rank=2), segmented neutrophils/CC (3), eosinophils/CC (4), erythrocytes/CC (5), healthy cells/CC (6), lymphocytes/CC (7), stick neutrophils/CC (8), leucocytes/CC (9), monocytes/CC (10). Correct prediction of 5YS was 100% by neural networks computing (error=0.000; area under ROC curve=1.0).
1. Benedetto Gesmundo M.D.Benedetto Gesmundo M.D.
Resident of Occupational Medicine
CPRL Huelva
Huelva, 26 September 2014
Teaching Unit Occupational Health Multiprofessional of Andalucia
Centre for prevention of occupational hazards of HuelvaCentre for prevention of occupational hazards of Huelva
Kienböck DiseaseKienböck Disease
A clinical case of cumulative trauma
disorder
2. Case
• Male, 37 years old
• Bricklayer with 25 years of experience
• No refers pathological history
• He consulted for the same reason (3
times in a year)
• Present condiction:
– Pain dominant wrist (right)
– Limitation of articular balance
– Loss of strength (hand clench)
Dr. Benedetto Gesmundo
Emergency H.J.R.J.: Medical consultation Date: June 2013
3. Clinical examination
• Slight edema in dorsal carpal
• No bruiding or deformity
• No Vascular-nervous disorders
• Painful acupressure snuffbox
• A.B. very limited
– Furthest flexo-estension +/- 10º
– Painful ulnar inclination
Dr. Benedetto Gesmundo
4. Additional tests
AP and lateral wrist’s radiograph
Dr. Benedetto Gesmundo
Subchondral sclerosis with changes in radiographic density of
lunate. No crashes or dislocations.
5. Plan and Treatment
• Relative repose
• Immobilization with bottony bandage for a
week
• Diclofenac retard 75 mg / 12 hours
• Contact surgeon guard: citing to unit handContact surgeon guard: citing to unit hand
Dr. Benedetto Gesmundo - R3 Medicina del trabajo
6. Definitions
Cumulative Trauma Disorder
Group of disorders that share etiology in which physical
demand exceeding capacity biomechanical of extructura
used, leading to lasion of the musculo-sjeletal system
Dr. Benedetto Gesmundo
Kienböck disease
Avasculare necrosis of the lunate carpal caused by lack of
blood supply to lunate bone, poducing progressive
morphological alterations
7. Cumulative trauma disorder
Dr. Benedetto Gesmundo
Phase 1 Phase 2 Phase 3
• Affectation
capacity
• No recovery pain
• Reversible to
rest
• Fatigue
• Good capacity
• Pain during the
rest
(weekend)
• Production injury
• Didability and
personal limitation
time
paincapacity
8. Robert Kienböck
Dr. Benedetto Gesmund
Robert Kienböck (1871-1953)Robert Kienböck (1871-1953)
Austrian RadiologistAustrian Radiologist
Lunatomalacia (1910)Lunatomalacia (1910)
9. Epidemiology
Dr. Benedetto Gesmundo - R3 Medicina del trabajo
Rare disease
• Young patient: between 20 – 40
years old
• Ratio Man : Woman = 7 : 1
• Prevalence < 1/200000
• Incidence < 1/2000
• Bilaeral incidence = 25 cases from
1937 to date
• Manuals Background: 97% of cases
10. Anatomia del carpo
Dr. Benedetto Gesmundo - R3 Medicina del trabajo
Distal row:Distal row:
•Trapezium
•Trapezoid
•Capitate
•Hamate
Proximal row:Proximal row:
•Scaphoid
•LunateLunate
•Triquetrum
•Pisiform
Ulna Radio
11. Lunate’s anatomy
Dr. Benedetto Gesmundo - R3 Medicina del trabajo
• Crescent-shaped
• 6 veneers: 4 articular + 2 roughened
• Superior (convex): Radio
• Inferior (concave): Capitate y hamate
• External (flat): Scaphoid
• Internal (flat): Triquetrum
• Previus: no articular
• Rear: no articular
Vascularización
Extraósea:
•Arcopalmar profundo
•Arco Radiocarpiano
Intraósea: (3 patrones)
•2 A.Dorsales + 1 A.Ventral
•1 A.Dorsal + 1 A.Ventral
•2 A.Dorsales + 2 A.Ventrales
59%59%
31%31%
10%10%
12. Etiology
(multifactorial)
Necrosis avascularNecrosis avascular
Dr. Benedetto Gesmundo
Traumatic theoryTraumatic theory Atraumatic theoryAtraumatic theory
Vascular sorceVascular sorce Bone sorceBone sorce
CapsuloligamentousCapsuloligamentous
injuryinjury
Neurovascular theoryNeurovascular theory
Nerve incolvement:Nerve incolvement:
1. Primary vasodilatation1. Primary vasodilatation
->-> Bone decalcificationBone decalcification
2. Vasocostricion2. Vasocostricion
-> Bone infarction-> Bone infarction
Constitutional factorsConstitutional factors
Vascular obliterationVascular obliteration
(embolus o thrombus)(embolus o thrombus)
Connective tissue diseasesConnective tissue diseases
(vasculitis and corticosteroids)(vasculitis and corticosteroids)
Lunate’s fractureLunate’s fracture
Compression fractureCompression fracture
Trabecular fracturesTrabecular fractures
in patients within patients with
predisposingpredisposing
anatomic variantsanatomic variants
13. Dr. Benedetto Gesmundo
Occupational etiology
Necrosis avascularNecrosis avascular
Traumatic theoryTraumatic theory Atraumatic theoryAtraumatic theory
Vascular sorceVascular sorce Bone sorceBone sorce
CapsuloligamentousCapsuloligamentous
injuryinjury
Neurovascular theoryNeurovascular theory
Nerve incolvement:Nerve incolvement:
1. Primary vasodilatation1. Primary vasodilatation
->-> Bone decalcificationBone decalcification
2. Vasocostricion2. Vasocostricion
-> Bone infarction-> Bone infarction
Constitutional factorsConstitutional factors
Vascular obliterationVascular obliteration
(embolus o thrombus)(embolus o thrombus)
Connective tissue diseasesConnective tissue diseases
(vasculitis and corticosteroids)(vasculitis and corticosteroids)
Lunate’s fractureLunate’s fracture
Compression fractureCompression fracture
Trabecular fracturesTrabecular fractures
in patients within patients with
presidspodingpresidspoding
anatomic variantsanatomic variants
15. Predisposing anatomic variants
Dr. Benedetto Gesmundo
Index inferior radioulnar Radial rake angle
Angle of the lunate fossa Translation medial index
“Cubit short” > Angle , > Radiolunate load
Flattened pit > lunate load Medial translation < 1/5 of lunate
16. Dr. Benedetto Gesmundo
Most frequent occupational cause
At work, the most frequet causes of vascular, neurological and
skeletal disordes are
VIBRATIONSVIBRATIONS
Vibreation (frequency between 25-250 Hz) are transmitted to wrist
by hand-held machines.
90% of vibration trasmitted to hand is absorbed in the wrist,
especially Lunate and scaphoid.
17. Risk factors
• Age: < 20 y.o. y > 40 y.o.
• History of arthritic process wrist
• Previous trauma
• Mechanical vibration [20, 250] Hz:
Hammers, Punches, Percussion drills, Sanders, pulidoras, Saws,
sealed guns, grinders, ...
• Minimal exposure: 5 years
• Maintained repetitive gestures
Dr. Benedetto Gesmundo
18. Precautions
• Application of specific protocols:
Load and repeated movements
• Limit exposure to vibration:
Acceleration: 5m/s2
for 8 hours
• USE IPE
Vibration Gloves
• Damped system Machines
• Alterations of tasks
Dr. Benedetto Gesmundo
19. Symptoms
• Wrist pain, synovitis associated
• Limited mobility
• Decreased grip strenght
• Thinkening of wrist edema
• Functional limitation
Dr. Benedetto Gesmundo
A long term disease often leads to osteoarthritits of wrist
20. Diagnosis
Dr. Benedetto Gesmundo
Plain radiography
Establishing evolution’s degree
(Initial stage)
NMR y Scintigraphy
Provide date to diagnose the
process
(Early diagnosis)
Radiography
24. Dr. Benedetto Gesmundo - R3 Medicina del trabajo
Lunate collapse occurs,
Proximal migration of capitate,
without alteration of joint scaphoid-lunate
Stages
Proposed by Lichtman
25. Dr. Benedetto Gesmundo
Scapholunate instability,
Rotatory subluxation of scaphoid (ring sign),
Dorsiflexion of lunate (DISI)
Stages
Proposed by Lichtman
29. Treatments
Dr. Benedetto Gesmundo
Observation, developmental control
Immobilization if pain
Low symptoms
Stage 0, I, II
Symptoms present
Stage I, II, IIIA
Articular selective desnervation
Radial shortening osteotomy
Symptoms present
Stage IIIB, IV
Proximal Hemicarpectomy
Partial or complete artrodesis
Lunate prosthesis
30. Surgical treatments
Dr. Benedetto Gesmundo
Proximal hemicarpectomyProximal hemicarpectomy
• Articular consevationArticular consevation
• Age and WorkAge and Work
• Mobility preservedMobility preserved
• Loss of strengthLoss of strength
• Load limitedLoad limited
• Severe osteoarthritisSevere osteoarthritis
• Age and workAge and work
• Mobility abolishedMobility abolished
• Preserved forcePreserved force
• Not limited loadNot limited load
Wrist’s ArtrodesisWrist’s Artrodesis
31. Experimental treatments
Dr. Benedetto Gesmundo
Lunate prosthesisLunate prosthesis
• Pyrocarbon o SilasticPyrocarbon o Silastic
• Conservacion articularConservacion articular
• Mobility preservedMobility preserved
Total wrist prosthesisTotal wrist prosthesis
• Metal y polymerMetal y polymer
• Severe osteoarthritisSevere osteoarthritis
• Mobility preservedMobility preserved
32. Occupational Impact
Dr. Benedetto Gesmundo
Kienböck’s disease is a debilitating condictiontion that
produce a high risk of occupational disability, partial o total.
Surgery is almeliorative and their results are conditioner by
several factors:
• Age of patient
• Radiological stage
• Evolution time
• Manual activity
• Limitations secuelae
• Type of surgery
The results of work disability in patients tratd for a total osteoarthrosis
have a lower demand for Total Permamant Disability compared to other
occupational pathology of wrist with equal tratment.
Enfermedad de Kienböck: TPD 86%, PPD 14%
Otras enfermedades: TPD 70%, PPD 30%
33. Common or occupational contingency?
Dr. Benedetto Gesmundo
Common ContingencyCommon Contingency (core cases)(core cases)
Etiology not related to workl activity (no traumatic theory)
• Anatomical factors
• Specific constitutional factors
• Vascular disorders of lunate
Occupational Contingency: Occupational diseaseOccupational Contingency: Occupational disease
Cases, without traumatic history, having a vascular ingury related to work
activity
• Microtraumatic process
• Mechanical activity
• Repetitive gesture maintained
Occupational Contingency: Occupational accidentOccupational Contingency: Occupational accident
Cases which dideas is a result of a traumatic process that producea vascular
injury
• Inseparable factors trauma
• Demonstrate a cause-effect
34. Vibration diseases
Dr. Benedetto Gesmundo
Suspected osteoarticualr involvement by hand-arm vibration transmittedSuspected osteoarticualr involvement by hand-arm vibration transmitted
Rate other
cause
Rate other
cause
Occupational
disease
Occupational
disease
NO
NO
NO
SI
SI
SI
NO
SI
RMN SI
Exposure to
vibrations
Exposure > 5 years
Onset latency > 2 years
Findings
compatible?
Findings
compatible?
Involvement in
early?
RX
36. Caso clínico: 2ª cita
• NMR: Findings compatible with Kienböck disease
stage IIIB
• Surgical waiting list fot Total wrist arthrodesis
• Temporary disability (4 month)
Dr. Benedetto Gesmundo
Vázquez Díaz Hospital Date: january 2014
Juan Rámon Jiménez Hospital …Waiting…
• Surgery: Total wrist arthrodesis
• Temporary disability
• Partial permanent disability?
37. Conclusions
• Crippling disease
• Boxdifficult qualifying in origin by its multible
etiologies
• It relates to works ofgreat mechanical stress and
vibration
• Medicolegal conflictsMedicolegal conflicts (contingency)
• Determines PPD and TPD
• Fondamental by occupational medical doctor:
– Diagnose the disease at early stage
– Precautions
– Orient to ideal treatment for each patient
Dr. Benedetto Gesmundo