Which of the Following Is a True Statement About MCP

Which of the following is a true statement about MCP arthroplasty and postoperative management of the fingers?

A) Repair of ruptured extrinsic finger flexor tendons often is coupled with MCP joint replacement arthroplasty for the patient with RA and chronic tenosynovitis.
B) After MCP arthroplasty and removal of the postoperative compression dressing,a dynamic splint with an outrigger is worn to maintain the MCP joints in full extension when the fingers are relaxed but allow active MCP flexion within a limited range and unrestricted IP motions.
C) If a patient has an ulnar drift deformity of the fingers,dynamic splinting is contraindicated postoperatively.
D) Use of static splinting has been shown to be an ineffective alternative to dynamic splinting for improving ROM and function after MCP arthroplasty.