Table 1.

Previous Systematic Reviews

		Level of Evidence	Minimum Follow-up	Included Studies	Conclusions	Direction
Biau	2006	I	1 year	18 Prospective randomized trials	BTB: minimal evidence for improved stability Hamstrings: decreased morbidity	Neutral
Forster	2005	I	2 years	6 Prospective randomized trials	BTB: greater extension loss, trend toward increased patellofemoral pain Hamstrings: loss of hamstring strength, trend toward increased pivot-shift	Neutral
Freedman	2003	IV	2 years	BTB data from 21 studies Hamstring data from 13 studies	BTB: decreased failure rate, increased stability and patient satisfaction Hamstrings: decreased anterior knee pain	Neutral
Goldblatt	2005	I	2 years	11 Prospective controlled trials	BTB: improved Lachman, pivot-shift, and instrumented stability Hamstrings: Decreased patellofemoral crepitation and kneeling pain	Neutral
Herrington	2005	I	1 year	13 Prospective controlled trials	No significant differences	Neutral
Prodromos	2005	IV	2 years	BTB data from 32 studies Hamstring data from 24 studies	Hamstrings: Increased stability but dependent on fixation method	Favors Hamstrings
Spindler	2004	I	2 years	9 Prospective controlled studies	BTB: increased kneeling pain Hamstrings: slight increase in instrumented laxity	Neutral
Yunes	2001	I	2 years	4 Prospective controlled studies	BTB: improved activity level and decreased laxity	Favors BTB

BTB = Bone-patellar tendon-bone