2: Joint Disorders Of The Hip Flashcards
What are characteristic symptoms of OA of the hip
- Pain radiating to the groin or greater trochanter
- Antalgic gait
What is an early sign of hip OA
Reduced internal rotation
What test is positive in hip OA
Reduced external rotation
What is another term for trochanteric bursitis
Greater Trochanteric Pain Syndrome
How does trochanteric bursitis present
Lateral hip pain
What is a sign for trochanteric bursitis
pain on palpating the greater trochanter
What is a sign of sacroiliac join dysfunction
positive faber test
What is the most common joint affected in OA
knee
What is the second most common joint affected in OA
hip
Is OA more common in females or males
females
In which age group is OA of the hip most common
incidence increases with age
How can aetiology of OA of the hip be divided
- Primary
2. Secondary
What is primary hip OA
OA of the hip with no underlying hip pathology
What is secondary hip OA
OA of the hip due to underlying joint disease
Name 3 causes of secondary hip OA
- Legg Calve Perthes Disease
- Developmental dysplasia
- Slipped capital femoral epiphysis
What is Legg Calve Perthes Disease
Reduced blood supply to the femoral head resulting in avascular necrosis
What are 4 RFs of hip OA
Age
Obesity
Female
Developmental dysplasia
How will hip OA present clinically
Pain in the groin or over the greater trochanter
What is an early sign of hip OA
limited/painful internal rotation
What is a late sign of hip OA
limited/painful external rotation
Which is affected first internal or external rotation of the hip in OA
internal rotation
What type of gait may be present in hip OA
antalgic
What are the two types of hip OA
superior pole OA
medial cartilage OA
What is superior pole OA
sclerosis of the femoral head and acetabulum, leading to loss of joint space
In which gender is superior pole OA more common
male
Is superior pole OA unilateral or bilateral
unilateral
In which gender is medial cartiliage loss more common
female
What are two signs of hip OA
- Positive Thomas test
- Pain on palpating greater trochanter
What does thomas’s test indicate
Fixed Flexion Deformity
how can hip and knee OA be differentiated by symptoms
Hip OA = more painful on walking UP the stairs. Knee OA = more painful on walking DOWN the stairs.
What is the criteria for hip OA to be diagnosed solely clinically
- > 45y
- no morning stiffness or morning stiffness <30m
- activity-related joint pain
If not clinically, what investigate will be used to diagnose OA
X-RAY
What are the features of OA on x-ray
LOSS: Loss of joint space Osteophytes Subchondral sclerosis Subchondral cysts
What is first-line Rx of hip OA
Conservative measures
What are 4 conservative measures recommended by NICE for managing hip OA
- Transcutaneous electrical nerve stimulation (TENS)
- Exercise and manual therapy
- Weight loss
- Thermotherapy
What is second-line management of hip OA
Analgesia
- Oral paracetamol
- Topical NSAIDs
(if poorly controlled consider short-course of oral NSAIDs and PPI)
What is third-line management of hip OA
Intra-articular corticosteroids
What is 4th line for hip OA
Surgical
What two surgeries can be offered for hip OA
- Hip hemoarthroplasty
- Total hip replacement
What is a hip hemiarthroplasty
Femoral head is replaced with a prosthesis. The acetabulum is native.
What are indications of hip hemoarthroplasty
- NOF fracture in elderly patient with no concomitant hip OA
- Hip OA with joint destruction in older patients (due to inactivity - reduced use)
What is a total hip replacement (THR)
The femoral head and acetabulum are replaced with a prosthesis
What are the indications for THR
- NOF fracture with hip OA
- Hip OA with complete joint destruction
What is greater trochanteric bursitis
inflammation of the bursa over the greater trochanter
what causes greater trochanteric bursitis
repeated use of the fibroelastic illiotibial (IT) band
which type of patients is greater trochanteric bursitis most common in
female runners
what is the peak incidence of greater trochanteric bursitis
50-70y
What are 6 risk factors for greater trochanter bursitis
- Repetitive use
- Rheumatoid arthritis
- Leg length discrepancy
- Running on banked surfaces
- Hip injury
- Previous surgery
Why is rheumatoid arthritis a risk factor for greater trochanteric bursitis
Results in inflammation of the bursa
How does greater trochanteric bursitis present clinically
Pain in the lateral hip
What is a sign of greater trochanter bursitis
Pain on palpation over the greater trochanter
how is greater trochanteric bursitis diagnosed
Clinically
what is first-stage in the management of greater trochanteric bursitis
Conservative:
- Avoid exacerbating movement
- Sleep on unaffected side
- Ice pack 10-20m several times a day
- Weight loss
what is second stage in greater trochanteric bursitis
Analgesia:
Paracetamol or short-course oral NSAIDs
what is 3rd stage management of greater trochanteric bursitis
Physiotherapy
what is 4th stage in management of greater trochanteric bursitis
Peri-trochanteric corticosteroid injection
What is sacroiliac joint dysfunction also referred to as
sacroillitis
In which gender is SI joint dysfunction more common
males
What 2 disorders commonly cause SI joint dysfunction
- Reiter’s syndrome
- Ankylosing spondylitis
What is renter’s syndrome
Triad of: arthritis, conjunctivitis, urethritis secondary to urogenital or GI infection.
How does SI joint dysfunction present clinically
- Generalised pain
- Worse on prolonged standing
- Difficultly climbing stairs
- Morning stiffness
- Weakness on muscles of that side
What test may be positive in SI joint dysfunction
FABER test
What is FABER’s test
Pain on flexion, abduction and external rotation of the hip
How may ankylosing spondylitis present
Reduced spinal flexion
what are two possible investigations for SI joint dysfunction
X-ray
MRI
what may x-ray of the SI joint show
Calcification
what may MRI of the SI joint show
Inflammation
What is transient synovitis of the hip also referred to as
Irritable hip
What is transient synovitis of the hip
Inflammation of the synovial membrane (synovitis) with associated hypertrophy of the synovium
What is the most common cause of hip pain in paediatric patients
transient synovitis of the hip
What age range does transient synovitis of the hip commonly occur
3-10y
In which gender is transient synovitis of the hip more common
Females (2:1)
What does transient synovitis of the hip occur after
URTI
If occurring after a bacterial infection, what is the likely causative organism
Post-streptococcal toxic synovitis
Explain clinical presentation transient synovitis of the hip
- Recent URTI
- Complains of pain in the groin or thigh
- Child does not walk on the affected side. This improves throughout the day, with the child typically limping by the evening.
How may the leg/hip present in transient synovitis of the hip and why
flexed, abducted and externally rotated as this is the position it is often most comfortable
What movement may be impaired in transient synovitis of the hip
internal rotation of the hip
What criteria is used to determine differential diagnosis of hip pain in children
Kocher
What is the Kocher criteria looking for
Septic arthritis of the hip
What is the Kocher Criteria (FNEW)
Fever
Non-weight bearing
ESR >40
WCC >12
If a child scores 4 on Kocher criteria what is the probability of it being septic arthritis
99%
If a child scores 3 on Kocher criteria what is the probability of it being septic arthritis
93%
If a child scores 2 on Kocher criteria what is the probability of it being septic arthritis
40%
If a child scores 1 on Kocher criteria what is the probability of it being septic arthritis
3%
How is transient synovitis of the hip in children diagnosed
Clinically
How is transient synovitis managed
Observation
NSAIDs: if improves with NSAIDs likely transient synovitis
How often does it take for symptoms to improve in transient synovitis of the hip
24-48h
How long does it take for symptoms to fully resolve in transient synovitis of the hip
1-2W
how will a posterior hip dislocation present
leg is shorted, adducted and internally rotated
what structure is most likely damaged in posterior hip dislocation
sciatic nerve