Intercondylar synovial septum in two patients with nail-patella syndrome.

This case report describes the arthroscopic findings in two patients with nail-patella syndrome (NPS). In both cases, a midline synovial septum was encountered that completely subdivided the knee into medial and lateral compartments. One patient required two subsequent arthroscopic procedures, and the synovial septum was found to have recurred even after it had been resected at the initial surgery.

Shortcuts in arthroscopic knot tying: do they affect knot and loop security?

Background: Shortcuts for throwing 3 alternating reversed half-hitches on alternating posts (RHAPs), in which the post is switched by alternating strand tension to "flip" the knot, have been advocated but never validated in a biomechanical study.

Hypothesis: Shortcut tying techniques will affect knot security or loop security.

Study Design: Controlled laboratory study.

Repair of lesser tuberosity osteotomy for shoulder arthroplasty: biomechanical evaluation of the Backpack and Dual Row techniques.

Background: Subscapularis dysfunction following total shoulder arthroplasty can result in permanent loss of function. The lesser tuberosity osteotomy (LTO) has been proposed as a method which utilizes bone-to-bone healing to improve subscapularis function. This study evaluates the biomechanical properties of two described techniques for LTO repair.

Management of failed biceps tenodesis or tenotomy: causation and treatment.

The purpose of this paper is to review the management of long head biceps tendon pathology, with a particular emphasis on a prior failed biceps tenotomy or tenodesis. Failed biceps tenotomy generally results from a lack of thorough preoperative discussion of potential outcomes rather than from technical problems. Patients with unsatisfactory results can be treated with conversion to a biceps tenodesis.

Tendon disorders of the foot and ankle, part 3: the posterior tibial tendon.

This article provides a review of posterior tibial tendon pathology and the authors' preferred management. The tibialis posterior musculotendinous unit is the most powerful inverter of the foot and an important dynamic stabilizer of the arch. In the stance phase of the gait cycle, it serves as an initiator of both ankle plantar flexion and subtalar inversion.

Femoral head size and wear of highly cross-linked polyethylene at 5 to 8 years.

Unlabelled: Wear of highly cross-linked polyethylene is reportedly independent of head size. To confirm that observation we asked in our population whether head size related to wear with one type of electron beam highly cross-linked polyethylene. Of 146 hips implanted, we evaluated complete clinical and radiographic data for 90 patients (102 hips or 70%).

Tendon disorders of the foot and ankle, part 2: achilles tendon disorders.

Disorders of the Achilles tendon include both acute and chronic ruptures as well as a spectrum of chronic overuse injuries involving inflammatory and degenerative changes within the tendon and surrounding tissues. These injuries are relatively common in athletes as well as among the general population. There is no consensus on the optimal treatment of Achilles tendon disorders.

Tendon disorders of the foot and ankle, part 1: peroneal tendon disorders.

Pathologic abnormality of the peroneal tendons is an uncommon but underappreciated source of lateral hindfoot pain and dysfunction that can be difficult to distinguish from lateral ankle ligament injuries. When left untreated, peroneal tendon disorders can lead to persistent lateral ankle pain and substantial functional problems. Unfortunately, the treatment recommendations for these disorders are primarily based on case series and expert opinion.

Operative treatment for peroneal tendon disorders.

Peroneal tendon disorders are rare, are frequently missed, and can be a source of lateral ankle pain. Magnetic resonance imaging is the standard method of radiographic evaluation of peroneal tendon disorders; however, diagnosis and treatment are based primarily on the history and physical examination. Peroneal tenosynovitis typically responds to conservative therapy, and operative treatment is reserved for refractory cases.