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PIPJProximal Interphalangeal Joint
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References in periodicals archive ?
At the level of MCPJ, the FDS split into two beams bypassing the FDP, while they remerged into a beam at the PIPJ and inserted on the midportion of the middle phalanx [Figure 3].
Boutonniere deformity results from the forced flexion of the PIPJ [Figure 8], a blow to the dorsum of the middle phalanx or volar dislocation of the PIPJ or the middle phalanx.[27],[28],[29],[30],[31],[32] Boutonniere deformity is most commonly seen in basketball and volleyball players.[32] Closed extension splinting is the initial treatment option for the boutonniere deformity, because splinting alone typically allows the central slip to heal.[16]
(21) Boutonniere deformity occurs especially because of the involvement of the PIPJs, whereas swan neck deformity may include three joint involvements consisting of the MCPJs, PIPJs and distal interphalangeal joints (DIPJs).
In our study, it was found that the ROM limitations related to wrist flexion and extension together with the PIPJs were much greater in the dominant hand, but MCPJ involvement was similar in both hands.
X-ray demonstrated a radial soft tissue swelling without bony involvement (Figure 1) whilst an ultrasound scan demonstrated marked subcutaneous oedema and thickening of the flexor tendon with synovial thickening of the PIPJ. No drainable focal fluid collection or foreign body was demonstrated.