Fusion

Subtalar and Triple Arthodesis

Biomechanics

 

Able to achieve relatively high level of function after STJ fusion

- previously believed that isolated STJ fusion should not be performed

- believed that triple arthrodesis was operation of choice for hindfoot

- STJ fusion has superior result with less stress on AJ

 

Average loss of DF 30% / PF 10%

 

Position of hindfoot determines flexibility of transverse tarsal (CCJ & TNJ) joints

- imperative that fusion be positioned in ~ 5o valgus 

Rheumatoid Fingers

ConditionsBoutonniere Fingers

 

1.  PIPJ Synovitis

- synovectomy via dorsomedial approach

2.  Flexor tenosynovitis

- may cause trigger finger

- trial HCLA

- remove synovits but don't release A1 pulley

- will worsen ulna drift

3.  DIPJ

- rarely affects

Rheumatoid Wrist

EpidemiologyRheumatoid Wrist

 

Extremely common

- 90% by 10 years have wrist problems

 

Principles

 

Landsmeer 1961

- treat wrist at same time as treat fingers or will recur

 

Frequently combine procedures

- synovectomy

- tendon transfer

- ulna procedure

 

Os Acromiale

Definition 

 

Failure of fusion of adjacent ossification centers

 

Epidemiology

 

Incidence 3%

 

Bilateral in 60%

 

Anatomy

 

4 ossification centers present in acromion

- pre-acromion

- mesoacromion

- metaacromion

- basiacromion

 

Osteoarthritis

EpidemiologyHeberden's Nodes

 

Male & Females > 60 years

- X-ray evidence of OA

 

Symptomatic 

- 25% females

- 15% males

 

Affected joints

 

Base thumb

PIPJ / Bouchard's nodes

DIPJ / Heberden's nodes

 

Tarsal Coalition

Definition

 

Congenital fibrous, cartilaginous or bony connection of 2 or more tarsal bones

- due to failure of segmentation

 

Peroneal Spastic Flat Foot

- tarsal coalition

- tarsal pain

- reduced STJ motion

- rigid pes planus

- peroneal muscle spasm / tightness

 

Epidemiology

 

Present in 6% of population

- symptomatic in 1% of population

 

Bilateral in 50%

 

Cervical Radiculopathy

Definition

 

Clinical diagnosis

- based on a sclerotomal distribution of motor &/or sensory symptoms or signs

 

Caused by impingement of exiting nerve roots

- HNP

- zygo-apophyseal / facet joint hypertrophy

- neuro-central joint hypertrophy

 

May be acute or chronic

 

Epidemiology

 

M>F

 

Peak age 50-54

 

C7 > C6