He denied prior or subsequent injury. Claimant's testimony was unrebutted and credible but not dispositive of the medical issues. Claimant exhibited palpable bony eburnation and tenderness of the medial aspect of the knee. Passive flexion and extension produced unspecified pain. Crepitus was noted at various points during examination.
Squatting is difficult and produces severe pain beyond three-quarters of a squat.
He diagnosed chondro- malacia and partial tear of the medial meniscus. Dr. Morrow understood a partial menisectomy and debridement occurred by arthroscopy. Dr. Morrow assigned a ten percent preexisting PPD of the left knee plus another forty-five percent PPD of the left knee relative to the reported injury. The preexisting PPD was specifically diagnosed as chondromalcia. Still another ten percent PPD was assigned for subsequent advancement of the degenerative process.