Inflammatory, infectious, and even neoplastic processes can involve the deep subfascial space of the hand. Suppurative deep-space infection is treated primarily with surgical drainage. Open approaches to these deep spaces carry the risk of exposed flexor tendons and nerves without adequate soft tissue coverage. The purpose of this Technical Note is to describe the technical details of little finger flexor tendoscopy, endoscopy of the ulnar bursa and midpalmar space, which will reduce the risk of exposed tendons or nerves associated with open approaches and allow aggressive hand therapy in the early postoperative period because of the minimal surgical trauma and small surgical wounds.

Synovitis of the interphalangeal joint of the great toe can occur in patients with rheumatoid arthritis, seronegative arthritides, or gouty arthritis or after a penetrating injury to the joint. Complete synovectomy of the joint usually requires a lengthy incision and extensive soft-tissue dissection. The purpose of this Technical Note is to describe the surgical details of arthroscopic synovectomy of the hallucal interphalangeal joint, which can reduce the surgical trauma.