Anti - Swan Neck Deformity Splint
singapore therapists associates pte ltd
Therapists, hand therapy, Limb Injuries
Swan-neck deformity often begins with flexor synovitis, which increases the flexor pull on the MP joint. Constant efforts to extend the finger against this pull lead to stretching of the collateral ligaments and the volar plate at the PIP joint. In a normal finger, intrinsic muscles insert into the lateral bands and serve as flexors of the MP joint and extensors of the PIP and DIP joints by being located volar to the MP joint axis and dorsal to the PIP and DIP joint axes. When swan neck deformity is present, the lateral bands are remain dorsal to the axis of the PIP joint. In this position, the lateral bands increase the pull of the long extensor tendon's central slip, which attaches to the dorsal base of the middle phalanx. The increase of flexor profundus tension resulting from hyperextension of the PIP joint leads to a flexion of the DIP joint. The same type of phenomenon can happen after mallet deformity. If left untreated, this can lead to a secondary swan neck deformity. Corrective splinting is essential is the early stages to prevent progression of the deformity.
, Limb Injuries
, Musculo-skeletal Disorders
, Occupational Therapy Services