Unable to get the correct software.

Clinical-noninvasive recording of sounds from the knees through a brief loaded range of motion. Description in phase 1 analytic but descriptive as well in phase 2. No samples other than a sound recording. The device is known microphone attached to the skin of the knee with elastic material. Sound recorded and analyzed on a lap top computer with Adobe software.

There is a need for a less expensive and more universally available screening device for the knee, and other joint pathology. The equipment used for ultrasound is much less expensive and cumbersome than that of an x-ray or magnetic resonance imaging. The equipment we will use for the analysis of sound produced by the body itself is an order of magnitude less expensive than ultrasound; such as a laptop computer with currently available software and an inexpensive transducer. Analysis of sound has proved useful in Pulmonology and Cardiology. We believe sound analysis will provide a useful yet inexpensive tool for primary care physicians as well as musculoskeletal specialists.

Phase 1: Establish the normal sound patterns emanating from the uninjured knee; we will look for the influence of age, height and weight.

Phase 2: To record and analyze the preoperative sound patterns from the knees with pathology, known by MRI and arthroscopy, then compare them with the normal sounds from Phase 1.

Inclusion Criteria:

Phase I

• Healthy Individuals.
• No neurological problems.
• No knee complaints.
• No previous Surgery or Knee injuries.

Phase II Patients undergoing knee arthroscopy who have pre-op MRI. The inclusion will be based on age group, 20 years of age, 40 and 60.

Exclusion Criteria:

• Neurologic Disease
• Previous serious injury (Fracture or dislocation).
• Previous Ligament reconstruction.
• Major non-subtitle problems with their knees. (This would create overwhelming noises).

Male or female english-speaking from the ages of 18 thru 70